Volkswagen Polo 6R Camshaft Control Valve Adjuster Unit 1.2 TSI 04E109088AN

The Volkswagen Polo 6R Camshaft Adjuster 1.2 TSI is a precision component from the Valves category, designed for TSI petrol engines. It ensures stable camshaft operation, which translates to a smoother engine running and correct camshaft phasing.

Specifications and technical data

• SKU: 04E109088AN
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 04E109088AN
• Substitutable numbers: 04E109088AN, 04E 109 088 AN
• Fuel type: Petrol
• Category: Valves

Purpose and Function in a TSI Petrol Engine

The camshaft adjuster in a 1.2 TSI engine controls the camshaft's position relative to the crankshaft, enabling dynamic camshaft phasing. In engines powered by petrol, this is crucial for:

• maintaining optimal cylinder filling across the entire RPM range,
• stable idle operation and during acceleration,
• reducing knocking combustion and improving throttle response,
• efficient turbocharger utilization in TSI engines.

A functional camshaft adjuster is particularly important in modern petrol engines, where valve timing control affects both performance and fuel consumption.

Technical Characteristics and Compatibility

The offered component comes from the original Volkswagen valves family, meaning it retains factory operating parameters and is compatible with the factory engine control system. The adjuster works with the camshaft timing system in the 1.2 TSI engine, ensuring:

• correct interaction with camshaft position sensors and the engine control unit,
• appropriate response speed to changes in load and RPM,
• stable operating oil pressure in the valve timing control area.

By adhering to manufacturer specifications, installing this adjuster allows for the restoration of correct camshaft timing operation without the need for ECU software modifications.

Benefits of Using an Original Camshaft Adjuster

Choosing a component from the Volkswagen Valves category is a solution that technically and operationally surpasses random aftermarket replacements. The most significant advantages include:

• factory fit for the 1.2 TSI engine – no mechanical or hydraulic compatibility issues,
• retention of manufacturer-specified camshaft phasing characteristics,
• reduced risk of ECU errors (check engine lights, limp mode) resulting from incorrect timing operation,
• more predictable engine behavior across the entire RPM range.

For users who want to maintain engine operating parameters close to factory settings, using an original camshaft adjuster is a technically sound solution.

Condition, Verification, and Practical Application

The presented camshaft adjuster is a used part, which helps reduce repair costs while maintaining a design consistent with the factory project. This type of part is particularly useful in situations where symptoms such as:

• uneven engine operation when cold or hot,
• loss of dynamic performance in the low or mid-RPM range,
• check engine light related to the timing system or camshaft position.

Before installation, the standard workshop procedure is recommended: checking the cleanliness of oil passages, verifying the engine oil condition, and inspecting the proper operation of other timing system components. A correctly installed adjuster helps restore predictable engine operation and reduce the risk of further damage.

Volkswagen Valves – Selecting the Right Component

If you are looking for other valves designed for this brand, check out our dedicated category Volkswagen valves, where you will find a wide selection of parts tailored to various models and engine versions.

More About Used Engine System Components

When selecting used timing and engine control system components, it's beneficial to be aware of best practices and common mistakes made when purchasing used parts. You can find broader context and practical tips in the article Buying Used Car Parts • Common Mistakes When Choosing Tuning Parts, which helps you make informed decisions about component selection and avoid operational issues.

Additionally, if you are interested in components affecting exhaust emissions and engine operation, it's worth reading the material EGR: What It Is and Why Consider Used EGR Valves, which discusses the role of valves in modern internal combustion engines and the importance of choosing used parts wisely.