Hella 7.21851.31.0 Secondary Air Injection Pump

The Hella 7.21851.31.0 is a high-quality secondary air injection pump designed to reduce vehicle emissions and ensure compliance with strict emissions standards. This pump is part of the vehicle's secondary air injection system, which injects clean air into the exhaust stream during cold starts to promote more complete combustion and reduce hydrocarbon pollutants.

Key Features:

• Manufactured by Pierburg for Hella, ensuring OEM-quality construction and reliability
• 12V electric operation for consistent performance
• Compact and lightweight design for straightforward installation
• Engineered to provide optimal airflow for clean and efficient engine operation
• Helps maintain proper air-fuel ratios for improved engine performance
• Reduces emissions to meet EPA and state emissions requirements

The secondary air injection pump plays a critical role in your vehicle's emissions control system. By pumping fresh air into the exhaust manifold during engine warm-up, it helps oxidize unburned hydrocarbons and carbon monoxide before they exit the tailpipe. A properly functioning secondary air pump ensures your vehicle passes emissions testing and runs efficiently. Common signs of pump failure include rough engine idle, reduced performance, check engine light illumination, and failed emissions tests.

This Hella pump delivers the quality and durability expected from a leading automotive electronics and emissions control manufacturer, making it an excellent choice for replacing a failed or worn secondary air injection pump.