Genuine BMW 11-72-7-557-910 Air Injection Hose Secondary Air System

The Genuine BMW 11-72-7-557-910 Air Injection Hose is an OEM replacement hose designed specifically for BMW's secondary air injection system. This hose routes fresh air from the secondary air pump to the exhaust ports or air injection manifold, enabling the engine to reduce cold-start emissions by promoting more complete combustion of unburned hydrocarbons during engine warm-up.

As a Genuine BMW part, this hose is manufactured to the exact tolerances and material specifications required by BMW, ensuring a proper fit and long-lasting performance. Unlike aftermarket alternatives, OEM hoses are engineered to withstand the heat, pressure, and chemical exposure inherent to the secondary air system environment.

Key Features:

• Genuine BMW OEM part — no modification or adaptation required
• Engineered to meet BMW factory specifications for fit, form, and function
• Constructed from heat- and chemical-resistant materials suitable for underhood temperatures
• Direct replacement for worn, cracked, or collapsed secondary air injection hoses
• Helps restore proper secondary air injection system function and resolve related fault codes (e.g., P0410, P0411)
• Manufacturer Part Number (MPN): 11-72-7-557-910

A failed or deteriorated secondary air injection hose is a common cause of check engine lights and emissions test failures on BMW vehicles. Replacing it with a Genuine BMW hose ensures the secondary air system operates as designed, supporting compliance with emissions standards and maintaining optimal engine performance during cold starts.