URO 11727557903 Secondary Air Injection Pump

Overview of URO Secondary Air Injection Pump

The URO Secondary Air Injection Pump (Part Number 11727557903) is designed to support emission control systems in select BMW models. Engineered with precision, this new pump ensures reliable operation for BMW 128i, 328i, 328i xDrive, and 328xi vehicles.

• Inside diameter: 30.7 mm for optimal airflow
• Wiring harness length: 305 mm for flexible installation
• Includes 2 hose connectors and 1 female connector
• Bullet-type terminals with 2 male terminals
• Constructed with durable AA3105 aluminum housing
• Equipped with 3 mounting holes for secure fitment
• Comes with mounting hardware for straightforward installation
• Grade type: Regular, new condition
• Wire quantity: 2 for proper electrical connection

Detailed Product Description

This URO secondary air injection pump is a new replacement part designed to maintain the efficiency of the air injection system in compatible BMW models. The pump features a 30.7 mm inside diameter, allowing for effective air delivery to reduce emissions during cold engine starts. Its 305 mm wiring harness length provides sufficient reach for installation without modification. The pump includes two hose connectors and a female connector, facilitating secure hose and electrical connections. The bullet-type terminals (two male terminals) ensure reliable electrical contact. The housing is made from AA3105 aluminum, offering corrosion resistance and durability under engine bay conditions. With three mounting holes and included mounting hardware, this pump can be securely installed in the designated location. This part is specifically compatible with BMW 128i, 328i, 328i xDrive, and 328xi models, ensuring proper fit and function.

Common Applications and Issues Addressed

• Restores proper secondary air injection system operation
• Helps reduce cold start emissions and exhaust smoke
• Resolves pump failure or electrical connection problems
• Addresses air injection system warning lights or fault codes
• Improves overall emission control system performance

Installation Notes and Tips

When installing the URO secondary air injection pump (11727557903), verify compatibility with your BMW 128i, 328i, 328i xDrive, or 328xi model. Ensure all electrical connections use the bullet-type terminals correctly, matching male and female connectors. The included mounting hardware and three mounting holes facilitate secure attachment. Check hose connections on the two hose connectors for tight seals to prevent air leaks. It is recommended to inspect related air injection system components during installation for optimal performance.

Quality Assurance and Warranty

This URO secondary air injection pump is a new, regular grade replacement part manufactured to meet OEM specifications. The AA3105 aluminum housing provides durability and corrosion resistance. While specific warranty details are not provided, URO parts typically undergo quality control to ensure reliable operation in emission control systems for BMW vehicles.