BMW Secondary Air Injection Control Valve - Genuine BMW 11727838029

Ensure optimal emissions control and engine performance with this **Genuine BMW Secondary Air Injection Control Valve**, part number **11727838029** (also BMW-11727838029).

This essential component plays a crucial role in your BMW's Secondary Air Injection system, which injects fresh air into the exhaust stream during cold starts. This process helps to rapidly heat the catalytic converters, reducing harmful emissions before the engine reaches optimal operating temperature.

Specifically designed for **BMW M3 models from 2008-2013** equipped with the **4.0L V8 S65B40A engine**, this valve is intended for **Cylinders 5-8**. Choosing a Genuine BMW part guarantees a precise fit, reliable function, and the premium quality materials engineered to meet BMW's exacting standards. Replace a faulty valve to maintain your M3's emission compliance and prevent potential check engine light issues.