Ford Focus St-3 Mk3 Engine Breather Hose Tube Line Pipe AG9G-8C362-CA

Ford Focus St-3 Mk3 Engine Breather Hose Tube Line Pipe is a component from the Lines, hoses and pipes group, designed to operate within the crankcase ventilation system of the sporty Focus ST-3 version. A properly selected breather hose stabilizes the engine's operating conditions, supports the correct discharge of oil vapors, and helps maintain smooth engine performance. This is a practical solution for users who want to restore the proper functionality of the system without unnecessary modifications.

Specifications and technical data

• SKU: AG9G-8C362-CA
• Mark: Ford
• Condition: Used
• OEM Part Number: AG9G-8C362-CA
• Substitutable numbers: AG9G-8C362-CA, AG9G8C362CA
• Part type: Hose
• Category: Hoses, Lines & Pipes

Purpose and function of the breather hose

The breather hose in the Ford Focus ST-3 Mk3 is responsible for the controlled discharge of gases from the crankcase into the intake system. A properly functioning component:

• limits excessive pressure in the engine,
• supports stable idle performance,
• reduces the risk of oil leaks resulting from system overload,
• helps keep the intake system clean within the range specified by the manufacturer. By maintaining factory geometry and diameters, the hose ensures proper gas flow, which is particularly important in more powerful units such as the ST-3 version.

Construction and fitment for Ford Focus ST-3 Mk3

The breather hose in question is a component structurally matched to the engine system in the third-generation Focus ST-3 model. This means:

• proper profiling for the standard routing in the engine bay,
• adaptation to factory mounting points,
• compatibility with original ports and connectors in the breather system. Such fitment facilitates installation, reduces the risk of material stress, and minimizes the possibility of leaks at connections. For the user, this means predictable system behavior and no need for additional adapters.

Benefits of using an original hose

Using a breather hose dedicated to the Ford Focus ST-3 Mk3 allows for maintaining system operating parameters in accordance with the manufacturer's specifications. In practice, this translates into:

• stable engine performance across a wide range of loads,
• reduced risk of uncontrolled oil vapors escaping into the engine bay area,
• easier diagnostics of potential breather issues, as the system remains in a configuration close to the factory setup. For users who drive their car dynamically, typical for the ST version, a properly functioning breather hose is an essential element in maintaining repeatable performance and correct engine operation culture.

Condition of the component and practical application

The offered hose belongs to the group of used parts, which allows for an economical repair of the breather system while maintaining the original design. This solution is particularly beneficial when servicing cars where compliance with the factory design and reasonable operating costs are important. The hose will work well both for a typical replacement of a worn-out component and for restoring the car to its stock configuration after previous modifications.

System expansion and related parts

If you are planning a comprehensive repair or upgrade of the engine area in your Ford and need other components from the same group, such as additional lines, flexible hoses, or rigid pipes, check the available parts in the Ford lines, hoses and pipes category. When planning repairs using used components, it is also worth familiarizing yourself with practical tips on selecting components that help maintain the right balance between cost and repair quality – more information can be found in the article Post-accident repair of your car: why are used body parts a better choice than replacements?.