Secondary Air Injection Smog Pump Compatible with BMW X5 2001-2004 Replacement for 11721437911

This secondary air injection smog pump is designed to support the engine's emissions control system by delivering additional air into the exhaust stream during cold starts. The pump is constructed with corrosion-resistant metal housing and durable internal components to ensure reliable operation and long service life. It can be installed as a direct replacement for a worn or failed unit during routine maintenance or repair, helping restore proper air injection function. Suitable for various vehicle applications where secondary air injection is required, this pump contributes to efficient engine operation and reduced emissions.

• Vehicle Fitment:Compatible with BMW X5 2001-2004
• Interchange Part Number: 306-025, 306025, 11721437700, 11 72 1 437 700, 11721437911, 11 72 1 437 911
• Part Details: Single secondary air injection pump unit for vehicle-specific system replacement service. Pump-style assembly suits full component replacement in the affected system.
• System Function: Supplies secondary air during cold-start conditions to support emissions-system operation.
• Before You Buy: Backed by a 1-year warranty. Please verify vehicle fitment, part number, and package quantity before ordering.