HomeEmission Control > Air Injection SystemGenuine 11721438103 Secondary Air Injection Pump Hose
Part #: 11721438103

Genuine 11721438103 Secondary Air Injection Pump Hose

⚙️ 3 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: BMW, X5
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Overview of Genuine Secondary Air Injection Pump Hose for BMW X5

The Genuine Secondary Air Injection Pump Hose, part number 11721438103, is designed specifically for BMW X5 models. This component plays a critical role in the vehicle's emission control system by ensuring proper air flow to reduce harmful exhaust emissions.

  • Compatible with BMW X5 models
  • Genuine OEM part for reliable fit and function
  • Part number 11721438103 for precise identification
  • Essential component of the secondary air injection system
  • Durable construction to withstand engine bay conditions

Detailed Product Description

This secondary air injection pump hose is an integral part of the emission control system on BMW X5 vehicles. It connects the secondary air injection pump to the rest of the air injection system, facilitating the delivery of fresh air into the exhaust stream during cold starts. This process helps reduce emissions by promoting the oxidation of unburned hydrocarbons and carbon monoxide. The hose is manufactured to meet OEM specifications, ensuring a secure fit and long-lasting performance under the demanding conditions of the engine compartment.

Function and Common Issues Addressed

  • Prevents exhaust emissions from exceeding regulatory limits
  • Eliminates air leaks that can cause check engine lights
  • Resolves secondary air injection pump malfunctions related to hose damage
  • Helps maintain optimal engine performance and fuel efficiency
  • Reduces the risk of failed emissions tests

Installation Notes and Tips

When installing the Genuine Secondary Air Injection Pump Hose (11721438103) on a BMW X5, ensure the engine is cool before beginning work. Carefully remove the old hose, inspecting the surrounding components for wear or damage. Properly secure all clamps and connections to prevent air leaks. It is recommended to check the secondary air injection pump and related valves during installation to ensure the entire system functions correctly.

Quality Assurance and Warranty

This Genuine part is manufactured to meet BMW's original equipment standards, providing reliable performance and durability. While specific warranty details may vary, Genuine parts typically come with a limited warranty covering defects in material and workmanship. Using the correct part number 11721438103 ensures compatibility and helps maintain the integrity of the BMW X5's emission control system.

This part fits 3 vehicles. Search below:

YearMakeModelSubmodelPositionNotes
2003BMWX53.0iN/AAir Pump to Valve; Thru 10/2003
2002BMWX53.0iN/AAir Pump to Valve
2001BMWX53.0iN/AAir Pump to Valve

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.