Genuine 11721433959 Secondary Air Injection Pump

Overview of Genuine Secondary Air Injection Pump

The Genuine Secondary Air Injection Pump with part number 11721433959 is designed specifically for BMW 525i, 528i, and 530i models. This emission control component helps maintain optimal engine performance by supporting the air injection system.

• Compatible with BMW 525i, 528i, and 530i models
• Part number 11721433959 ensures exact OEM fitment
• Supports the secondary air injection system for emission control
• Durable construction for reliable operation
• Direct replacement for factory-installed pumps

Product Details and Functionality

This Genuine secondary air injection pump is an essential part of the emission control system in select BMW vehicles. It works by injecting fresh air into the exhaust stream during cold starts, which helps reduce harmful emissions and promotes faster catalytic converter light-off. The pump is engineered to meet the original equipment specifications, ensuring proper fit and function in BMW 525i, 528i, and 530i models. Using part number 11721433959 guarantees compatibility and maintains the integrity of the vehicle’s emission system.

Common Applications and Problem Resolution

• Reduces cold start emissions by supporting air injection
• Prevents check engine light related to secondary air injection faults
• Resolves rough idle or poor engine performance caused by pump failure
• Helps maintain compliance with emission regulations
• Eliminates unusual noises from a failing air injection pump

Installation Notes and Tips

Installation of the Genuine secondary air injection pump should be performed by a qualified technician familiar with BMW emission systems. Ensure the vehicle is cool and the battery is disconnected before beginning. Verify the part number 11721433959 matches the original pump to avoid fitment issues. Inspect related hoses and electrical connectors for wear or damage during replacement. Proper installation will restore the air injection system’s functionality and help maintain emission standards.

Quality Assurance and Warranty

This Genuine secondary air injection pump is manufactured to meet OEM standards for durability and performance. While specific warranty details may vary, Genuine parts typically come with a limited warranty covering defects in materials and workmanship. Using the correct part number 11721433959 ensures you receive a component designed to maintain your BMW 525i, 528i, or 530i’s emission control system integrity.