What are air conditioning lines, hoses, and connectors used for?

Air conditioning lines, hoses, and connectors are used to maintain an airtight circulation of refrigerant and oil throughout the system. They are responsible for the proper flow of the medium on the high and low-pressure sides, as well as for the safe connection of components. Without their proper operation, the air conditioning loses efficiency, and the compressor may operate under improper conditions. It is these elements that determine pressure stability and the effectiveness of interior cooling.

What is the construction and function of an air conditioning connector?

An air conditioning connector is a connecting element that links a line with another system component, such as a compressor, condenser, or evaporator. Its construction includes a socket, a line end, and a surface working with an O-ring or other seal. The connector serves to ensure tightness under pressure and thermal load. Depending on the car's construction, it may differ in diameter, thread type, or mounting profile.

How to choose an air conditioning line for a specific car?

It is safest to compare the OEM number, interchangeable numbers, line routing, and type of ends. It is also worth verifying the fuel type, engine version, and location on the vehicle, because visually similar parts may have different mounting points. If the car was available in pre-facelift and facelift versions, it is good to also check the structural differences of the equipment.

What symptoms indicate damage to an air conditioning line or connector?

The most common symptoms are a drop in cooling performance, refrigerant loss, traces of oil at the connections, and uneven compressor operation. In practice, you can also notice corrosion of aluminum sections, abrasions of the flexible part, or damaged brackets guiding the line. Such signals mean that it is worth checking the tightness of the entire circuit.

How to take care of air conditioning lines, hoses, and connectors after installation?

After installation, pay attention to the correct positioning of the line, the absence of tension on the ends, and the condition of the seals. An incorrectly routed element can rub against other parts of the engine compartment and eventually become damaged. A good practice is also to check the system's tightness after repair and periodically inspect the connection points.

Air conditioning hoses, pipes and connectors

At Global Parts, we offer a wide selection of original used car parts, including air conditioning hoses, lines, and connectors for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our car parts undergoes quality control to ensure you receive a top-quality product.

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BMW 1 Series E81 E87 Pressure Hose Condenser Evaporator Air Con A/C Pipe 6927541

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7566031

BMW E81 E82 E87 E90 E91 E92 LCI Coolant Hoses Cooling System Pipe 7566031

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9212082

BMW 1 2 3 Series F20 F22 F30 Diesel N47N Condenser Pressure Hose Pipe 9212082

Product currently unavailable

Part no. 9212236

A/C Pipe BMW F20 F21 F22 F30 Pressure Hose Condenser Evaporator 9212236

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6952992

Pressure Hose BMW E81 E87 E90 E91 Pipe Condenser Air Con 6952992

€47.95

Free delivery: Aug 6 – 10

If paid before 14:00

Part no. 9226413

BMW E90 E91 LCI N47N Compressor Condenser Coolant Pressure Hose 9226413

€37.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9224863-1

BMW MINI Cooper One R55 R56 R57 Pressure Hose Pipe Condenser Evaporator Air

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 2751474

BMW Mini Cooper R55 R56 R57 Evaporator Compressor Suction Pipe Hose

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A9108303201-1

Mercedes Sprinter W910 Front Air Vent Grill A9108303201

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9184102

BMW 5 Series E60 E61 LCI Suction Pipe Diesel Heater Air Conditioning

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7564233

BMW E81 E87 LCI E90 E91 Suction Pipe Engine Hose 7564233

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 2758138

BMW Mini Cooper R55 R56 R57 Evaporator Compressor Coolant Suction Pipe

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7566031-1

Coolant Hose BMW E81 E87 E90 E91 E92 LCI N43 Cooling System Pipe 7566031

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9209722

Mini Cooper F55 F56 F57 F60 Coolant Pipe Air Suction Lines 9209722

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2712300556

Mercedes CLK W203 C209 Kompressor Air Conditioning Air Con Pipe Line A2712300556

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9120003

BMW F10 F11 Pressure Hose Pipe Lines Air Conditioning 9120003

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9222699

BMW 1 Series E81 E82 E87 LCI N47 Engine Inlet Radiator Heater Hose 9222699

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9222700

BMW 3 Series E90 E91 E92 E93 LCI Hose Engine Inlet And Heater Radiator 9222700

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A6462300356

Mercedes W203 OM646 Air Conditioning Air Con Pipe Hose Diesel A6462300356

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 3448288

BMW X3 Series E83 LCI N47 Pressure Hose Compressor Condenser Pipe 3448288

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9337130

BMW F20 F30 LCI B46 B48 Pressure Hose Pipe Air Conditioning Condenser 9337130

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6927538

BMW E87 E90 E91 Diesel M47N2 Air Condition Con Pipe Hose Cool 6927538

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9337126

BMW 1 3 er F20 F21 F30 LCI Refrigerant Pressure Line Double Pipe Hose 9337126

€94.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9337133

BMW 1 3 Series F20 F21 F30 F31 Suction Hose Pipe Evaporator Compressor 9337133

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A0001591904

Mercedes C E Class W203 W211 OM646 Water Coolant Heater Module A0001591904

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A1698301615

Mercedes W169 Air Conditioning Pressure Pipe Hose Line A1698301615

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A1778305201

Mercedes W177 Air Con Refrigerant Pipe Conditioning Line Hose A/C A1778305201

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 2751614

Mini Cooper One D R55 R56 W16 Radiator Engine Return Hose Line 2751614

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9806518-1

Mini R60 R61 Pressure Hose Condenser Evaporator Air Con Pipe 9806518

€23.95

Free delivery: Aug 6 – 10

If paid before 14:00

Part no. 7800590-1

Fuel Injection Lines BMW E90 E91 LCI F10 F20 N47N Diesel Fuel Pressure Pipes Set

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9224863-2

MINI Cooper One R55 R56 R57 Pressure Hose Pipe Evaporator Air Condition A/C

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 1504541

BMW MINI R52 R53 Suction Pipe Evaporator Compressor Air Con Hose

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6842533

BMW F30 F31 F32 N57N N57Z Pressure Hose Pipe Air Conditioning Condenser 9223294

€37.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 7552409

Engine Coolant Line BMW E82 E90 E91 E92 LCI Heater Return-Thermostat 7552409

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9250709

BMW F10 F11 N47N N47S1 Pressure Hose Assy Coolant Line Diesel 9250709

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6988881

BMW X5 X6 E70 E71 M57N2 Air Conditioning Hose Tube Suction Pipe 6988881

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 5Q0820803F

VW Volkswagen Golf 5G 1.6 TDI CLHA A/C Air Condition Pump Compressor 5Q0820803F

€42.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2218306516

Mercedes W221 Air Conditioning Coolant Suction Pipe Line Hose A2218306516

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9248522

BMW 5 Series F10 F11 530d N57N Pressure Hose Assy Coolant Line R134A 9248522

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6918240

BMW E63 E64 Air Condition A/C Pressure Hose Condenser Evaporator Pipe 6918240

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A1778303302

Mercedes W177 Saloon Air Con Refrigerant Pipe Conditioning Line Hose A1778304801

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6946624

Mini Cooper S R52 R53 Pressure Hose Condenser Evaporator Pipe Line 6946624

€56.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8383709

BMW X5 Series E53 3.0d Diesel Additional Heater Water Valve Hose Pipe 8383709

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9209724

Mini F55 F56 F57 Pressure Hose Condenser Evaporator Pipe Lines 9209724

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 2754220

BMW MINI Clubman Cooper S R55 R56 R57 R58 Engine Coolant Hose Pipe 2754220

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2118309315

Air Conditioning Pipe Mercedes W211 W219 A/C Air Con Hose Line A2118309315

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9806518

Mini R60 R61 Pressure Hose Condenser Evaporator Air Con Pipe 9806518

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9218930

Air Conditioning Pipe BMW F10 M5 F12 F13 M6 Pressure Hose 9218930

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6784788

BMW X5 E70 Steering Suction Pipe Hose Line 3.0D 3.0SD M57N2 6784788

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 1K0820743FD

Audi A3 8P Air Conditioning Compressor Sensor A/C Hose Pipe Line 1K0820743FD

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9250710

BMW 5 7 F01 F07 F10 N57 Radiator Pressure Hose Assy Coolant Line Diesel 9120004

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6805433

Mini Cooper F55 F56 F57 Air Conditioning Suction Pipe Hose 6805433

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9321309

Air Conditioning Pipe BMW F80 M3 F82 M4 Evaporator Compressor Suction Hose

€56.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8472971

BMW 1 3 Series F20 F21 F30 F31 LCI Pressure Hose Assy Fuel Injector 8472971

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6987992

BMW E87 E90 E91 Diesel M47N2 Air Condition Con Pipe Hose Line 698799

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6982866

Mini Cooper One R50 R52 R53 Pressure Hose Pipe Compressor Condenser 6982866

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6917865

BMW X5 Series E53 Evaporator Compressor Coolant Suction Pipe 6917865

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6988867

Suction Pipe BMW X5 E70 3.0si N52N Air Conditioning Compressor Line 6988867

€37.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9252990

Coolant Line BMW X5 F15 X6 F16 Pressure Hose Compressor Condenser 9252990

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9168366

BMW 1 3 Series E81 E87N LCI E90 E91 Suction Pipe Evaporator Compressor Air Hose

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9122621

BMW 3 Series E90 E92 E93 LCI M3 Suction Pipe Evaporator Compressor Aircon AC

€34.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6946621

MINI Cooper S R52 R53 A/C Air Conditioning Suction Pipe Compressor 6946621

€43.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9321598

Air Conditioning Pipe BMW G11 G30 G32 Evaporator-Compressor Suction Line 9321598

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6832951

MINI Cooper One F55 F56 F57 F60 Pressure Hose Condenser Evaporator Pipe 6832951

€37.95

Free delivery: Aug 6 – 10

If paid before 14:00

Part no. 9224861

Mini Cooper One R55 R56 D Diesel Suction Pipe Evaporator Compressor 9224861

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8381544

BMW X5 SERIES E53 Pressure hose condenser evaporator pipe 64538381544 8381544

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 3455909

BMW X3 E83 3.0d M57N2 Compressor Condenser Pressure Hose Line 3455909

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6917873

BMW X5 Series E53 3.0d M57 Air Con Pressure Hose Pippe Assy Compressor Condenser

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 5Q0820743E

Audi A3 8V VW Golf Mk7 Air Conditioning Hose A/C Pipe Line 5Q0820743E

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6988883

BMW X5 X6 E70 E71 Diesel Suction Pipe Line Air Conditioning 6988883

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 4250405

BMW 1 3 Series e81 e87N e90 e91 SUCTION PIPE EVAPORATOR-COMPRESSOR Air con hose

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6927845

Air Conditioning Pipe BMW X1 E81 E87 E90 E90N E91 E92 E93 A/C Hose 6927845

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9809006-1

MINI Cooper D R55 R56 R57 LCI 1 Evaporator Compressor Suction Pipe Hose 9809006

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9324800

BMW G30 G31 G11 Air Conditioning A/C Air Con Refrigerant Pipe Hose Line 9324800

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9232585

BMW E90 E91 E92 LCI Pipe Evaporator Compressor Air Conditioning Hose 9232585

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9224833

BMW Z4 Series E89 A/C Air Conditioning Hose Pipe Pressure Condenser 9224833

€23.95

Free delivery: Aug 6 – 10

If paid before 14:00

Part no. A2468302415

Mercedes W176 A/C Air Conditioning Refrigerant Pipe Hose A2468302415

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9209741-1

BMW 1 Series E81 E87 LCI Diesel N47 Air Conditioning Line Suction Line 4250403

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2048300615

Mercedes W204 C200 C220 CDI Air Conditioning Pipe Line A2048300615

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2468303415

Air Conditioning Pipe Mercedes W176 W246 Refrigerant Hose Line A/C A2468303415

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 3450902

BMW X3 Series E83 LCI 2.5si 3.0 si Suction Pipe Evaporator Adapter Lead 3450902

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 4249892

BMW F10 F11 N47N N47S1 Pressure Hose Assy Coolant Line Diesel 4249892

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8T0260707B

Audi A4 B8 2.0 TFSI CDNC A/C Air Conditioning Compressor Pipe Hose 8T0260707B

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6946622

Mini R52 R53 Pressure Hose Compressor Condenser 6946622

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A1775014400

Coolant Hose Mercedes C118 W177 W247 Radiator Cooling Pipe Line A1775014400

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 8377079

BMW X5 Series E53 M57 3.0d Diesel Compressor Condenser Pressure Hose 8377079

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6767421

BMW E60 E61 Steering Hose Dynamic Drive Power Expansion Line N52 Petrol 6767421

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2058307201

Mercedes W205 Diesel M626 Air Confitioning Pipe Refrigerant A/C Compressor Line

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6910804

BMW 5 SERIES E60 E61 Pressure Hose Compressor-Condenser PETROL 6910804

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9291282

BMW i3 I01 Pressure Line Pipe Front Air Conditioning R1234YF 9291282

€28.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9808024

Mini Cooper R60 R61 Air Con Suction Pipe Hose Evaporator Compressor 9808024

€47.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 059121065FK

Audi A7 4G8 Water Coolant Pipe Hose Line 059121065FK

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6918939

BMW X5 E53 3.0d M57N Connector Suction Pipe Coolant Line 6918939

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2058306501

Air Conditioning Hose Mercedes W205 Refrigerant A/C Compresor A2058306501

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 9337131

BMW 1 3 Serie F20 F30 F31 LCI M140i 340i N58 Pressure Hose Compressor Condenser

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A2138301900

Mercedes W213 OM654 Refrigerant Pipe Air Con Conditioning Line A/C A2138301900

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. A1778305501

Mercedes W177 Air Con Refrigerant Pipe Conditioning Line Hose A/C A1778305501

€32.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 6922694

BMW 7 Series E65 E66 N62 N62N Petrol Suction Pipe Evaporator Compressor 6922694

€23.95

Free delivery: Aug 7 – 10

If paid before 14:00

Part no. 3400413

BMW E83 M54 Evaporator Compressor Suction Coolant Pipe Line 3400413

€34.95

Free delivery: Aug 7 – 10

If paid before 14:00

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Showing 1-99 of 988 products

AC hoses and connectors – reliable parts for car cooling systems

High-quality air conditioning components – durability and compatibility with various models

Air conditioning lines, hoses, and connectors are components that play a key role in the proper functioning of the air conditioning system. They are responsible for the airtight and efficient transfer of refrigerant between the compressor, condenser, evaporator, and other system components. Their high quality and technical condition are essential for the reliable operation of the air conditioning. In the Global Parts automotive store, we offer a wide selection of used car parts, including air conditioning lines, hoses, and connectors, perfectly matched to brands such as BMW, Audi, Mercedes, Volkswagen, Mini, and many others.

How do air conditioning lines, hoses, and connectors work in the system?

Air conditioning lines, hoses, and connectors are responsible for the airtight transfer of refrigerant and lubricating oil between individual system components. Each of these elements has its own unique task:

High-pressure lines – transport refrigerant under high pressure from the compressor to the condenser.
Low-pressure hoses – carry refrigerant from the evaporator to the compressor after cooling.
Connectors – ensure airtight and stable connections between lines and other system components.
Seals and O-rings – protect against refrigerant leaks, ensuring the tightness of the entire system. Each of these elements must be made of materials resistant to high pressure, temperature, and the chemical properties of the refrigerant.

Construction and purpose of air conditioning lines, hoses, and connectors

Air conditioning lines, hoses, and connectors are a set of working connections that link the compressor, condenser, evaporator, and receiver-drier into one airtight circuit. These elements are mounted mainly in the engine compartment, near the bulkhead, and in the area of the air conditioning radiator, and their routing depends on the engine version and body type. A typical line may have an aluminum tube, a flexible rubber section, crimped ends, and mounting points to the body. In products from this category, it is worth checking the brand marking, condition, OEM part number, interchangeable numbers, fuel type, and location on the vehicle.

Definitions and parameters

Air conditioning lines differ in diameter, pressure resistance, and type of ends. Connectors most often use SAE standards or quick-connectors characteristic of a given brand, which affects compatibility with the compressor and condenser. In practice, this means that a line for one BMW model will not fit an Audi car, despite similar engine capacity and comparable air conditioning performance.

Differences between types of lines and connectors

The high-pressure line is used to transport compressed refrigerant from the compressor outlet to other system elements and usually has a stiffer construction and stronger ends. The low-pressure hose is responsible for the return of the refrigerant on the suction side and more often operates as a more flexible section. An air conditioning connector refers to the connection point of two circuit elements, where the thread type, seal profile, and socket compatibility are crucial. In practice, when repairing the system, it is worth checking the condition of air conditioning compressors and clutches simultaneously, as damage to one sub-assembly often affects the operation of the others.

Comparison of air conditioning line variants

Element type	Application	Construction	What to check before purchase
High-pressure line	Connection of the compressor with the condenser or further section of the system	Usually an aluminum tube with a flexible section and crimped ends	OEM number, line shape, end type, mounting points
Low-pressure line	Return of refrigerant from the evaporator to the compressor	Greater flexibility, different operating profile and different ends than on the high-pressure side	Location on the vehicle, diameter, presence of covers and brackets
Connector and fitting	Airtight connection of the line with the air conditioning component	Metal socket or end working with a seal or O-ring	Seal type, thread or quick-connector, socket compatibility
Line with sensor or additional outlet	Support for advanced air conditioning system versions	Extended construction with space for a sensor, valve, or additional section	Car equipment, engine version, presence of additional connections

Why is it worth taking care of air conditioning lines, hoses, and connectors?

The tightness and efficiency of lines, hoses, and connectors in the air conditioning system are the basis for the reliable operation of the entire system. Their damage or wear can lead to:

Loss of refrigerant, which reduces cooling efficiency.
Pressure drop in the system, which can damage the compressor.
Corrosion due to refrigerant leaks and moisture. At Global Parts, we offer used car parts that help maintain the full efficiency of the air conditioning system.

The importance of tightness and cooperation with other system elements

The tightness of the air conditioning system serves to maintain the proper circulation of the refrigerant and stable operation of the compressor. Even a small leak at the connection of a line and connector can cause a drop in cooling performance, traces of oil at the ends, and overloading of components. When choosing an element such as a BMW E90 air conditioning line, it is worth comparing the OEM number, tube routing, type of ends, and compatibility with the engine version. During broader diagnostics, it is also useful to check the condition of condensers (radiators) and receiver-drier filters and accumulators.

How to choose the right air conditioning lines, hoses, and connectors?

When choosing air conditioning lines, hoses, and connectors, you should pay attention to several key aspects:

Matching the vehicle model – every car brand and model has specific requirements regarding the air conditioning system. At Global Parts, you will find air conditioning lines, hoses, and connectors perfectly matched to BMW, Audi, Mercedes, Volkswagen, Mini, and many others.
Technical condition – ensure that the lines and hoses are free from cracks, corrosion, and leaks.
Type of connectors – choose connectors compatible with your vehicle's air conditioning system to ensure the tightness and stability of the connections.

Selecting parts by OEM number and vehicle version

The selection of an air conditioning line or connector is best based on the OEM number, interchangeable numbers, and comparing the element's routing with a photo of the part. In practice, the fuel type, engine version, mounting side, and the presence of additional brackets or connections for a sensor also count. If a sub-assembly such as a BMW E90 air conditioning line is sought, you must check not only the shape itself but also how the line is routed in the engine compartment. Additional support when completing the system can be provided by pressure switches when the diagnosis also includes controlling the air conditioning operation.

Why is it worth choosing used air conditioning lines, hoses, and connectors?

Purchasing used car parts is a solution that allows you to combine high quality with savings. By choosing used lines, hoses, and connectors, you gain:

Lower costs – used parts are cheaper than new ones, and when selected correctly, they perform their function well.
Ecology – you support recycling and reduce the amount of automotive waste.
Wide offer – in our store, you will find elements for many car brands, which makes it easier to match them to your vehicle. For those who are also completing other elements of the interior cooling system, we also recommend supplementary material: Used parts for Mercedes - original parts from dismantling.

How to take care of air conditioning lines, hoses, and connectors?

To ensure that lines, hoses, and connectors work efficiently for a long time, it is worth following a few rules:

Regularly check the visual condition of the lines and hoses, looking for signs of wear such as cracks or leaks.
Replace seals and O-rings during every repair or service of the air conditioning system.
Keep the system clean to avoid contamination that can lead to damage or leaks. In case of failure or the need for replacement, properly selected elements help restore the full functionality of the air conditioning system.

FAQ

Question	Answer
What is the construction and purpose of air conditioning lines, hoses, and connectors?	Air conditioning lines, hoses, and connectors are elements connecting the main components of the car's air cooling system. They consist of aluminum sections, flexible parts, mounting ends, and seals, and their task is to guide the refrigerant between the compressor, condenser, evaporator, and receiver-drier. They are located mainly in the engine compartment and near the bulkhead. Their construction depends on the engine version, body, and vehicle equipment.
What are air conditioning lines, hoses, and connectors used for?	Air conditioning lines, hoses, and connectors are used to maintain an airtight circulation of refrigerant and oil throughout the system. They are responsible for the proper flow of the medium on the high and low-pressure sides, as well as for the safe connection of components. Without their proper operation, the air conditioning loses efficiency, and the compressor may operate under improper conditions. It is these elements that determine pressure stability and the effectiveness of interior cooling.
What is the construction and function of an air conditioning connector?	An air conditioning connector is a connecting element that links a line with another system component, such as a compressor, condenser, or evaporator. Its construction includes a socket, a line end, and a surface working with an O-ring or other seal. The connector serves to ensure tightness under pressure and thermal load. Depending on the car's construction, it may differ in diameter, thread type, or mounting profile.
How to choose an air conditioning line for a specific car?	It is safest to compare the OEM number, interchangeable numbers, line routing, and type of ends. It is also worth verifying the fuel type, engine version, and location on the vehicle, because visually similar parts may have different mounting points. If the car was available in pre-facelift and facelift versions, it is good to also check the structural differences of the equipment.
What symptoms indicate damage to an air conditioning line or connector?	The most common symptoms are a drop in cooling performance, refrigerant loss, traces of oil at the connections, and uneven compressor operation. In practice, you can also notice corrosion of aluminum sections, abrasions of the flexible part, or damaged brackets guiding the line. Such signals mean that it is worth checking the tightness of the entire circuit.
How to take care of air conditioning lines, hoses, and connectors after installation?	After installation, pay attention to the correct positioning of the line, the absence of tension on the ends, and the condition of the seals. An incorrectly routed element can rub against other parts of the engine compartment and eventually become damaged. A good practice is also to check the system's tightness after repair and periodically inspect the connection points.

Summary: air conditioning lines, hoses, and connectors at the Global Parts automotive store

Air conditioning lines, hoses, and connectors are responsible for tightness, proper refrigerant flow, and stable operation of the entire vehicle interior cooling system. In the Global Parts offer, you will find elements matched to cars of brands such as BMW, Mercedes, Audi, and others, with the possibility of verification by OEM number, car version, and mounting location. This is a practical choice for those who are completing an air conditioning system with consideration for part compatibility and the actual vehicle specification. We invite you to contact us – we are here to help you! For more information and interesting facts, we also invite you to our automotive blog.

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