Secondary Air Pump Mercedes W169 W245 Auxiliary Pump A0001404585

The Mercedes W211 Secondary Air Pump is a component of the air supply system, responsible for assisting in the afterburning of exhaust gases in the engine. The offered part comes from disassembly, allowing for an economical yet technically sound repair of your Mercedes' system.

Specifications and technical data

• SKU: A0001404585
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0001404585
• Substitutable numbers: A0001404585, A 000 140 45 85
• Location on the vehicle: Front
• Category: A/C Compressors & Clutches

Purpose and Function of the Secondary Air Pump

The secondary air pump for the Mercedes W211 operates at the front of the vehicle, supplying the exhaust system with an additional portion of air during engine start-up and warm-up phases. This accelerates the exhaust gas purification components to operating temperature, stabilizes cold engine operation, and helps maintain emission compliance.

A functional component of this type reduces the risk of engine control unit errors, rough idling, and characteristic noises resulting from leaks or improper airflow.

Construction, Installation, and Location

The pump is structurally designed for installation in the front section of the engine bay, utilizing factory mounting points and wiring harnesses. This ensures:

• correct air supply to the exhaust system,
• stable mounting that minimizes vibration and noise,
• hassle-free electrical connection to the vehicle's system.

The OEM solution ensures proper fitment with engine accessories and compatibility with factory control systems, without requiring any modifications to the installation.

Benefits of Using an Original Used Pump

Using an original, used secondary air pump in a Mercedes W211 offers a sensible compromise between cost and functionality. Compared to low-cost aftermarket alternatives, a disassembled part provides:

• maintenance of original operating parameters for the exhaust gas purification system,
• better compatibility with the engine control unit software,
• lower service costs while maintaining correct airflow characteristics.

This solution is particularly beneficial for repairs on older W211 models, where both technical performance and a rational approach to the operating budget are important.

Application in Air Conditioning System and Engine Accessories

This product belongs to the category of air conditioning compressors and clutches, highlighting its connection to accessories operating at the front of the vehicle, in close proximity to the air conditioning system and the auxiliary drive. A correctly selected component helps maintain:

• stable operating conditions for accessories in the engine bay,
• proper load distribution on the auxiliary drive,
• cohesion of the entire system with the factory Mercedes configuration.

Used Mercedes Parts – How to Sensibly Reduce Costs

Choosing a used, original component is a proven way to reduce expenses while maintaining proper quality. If you want to better understand when it's worth opting for disassembled parts for this brand of car, check out the article Used Mercedes Parts – Original Disassembled Components, which describes practical examples of using such solutions in servicing.

If you are also looking for other Mercedes air conditioning compressors and clutches for your car, explore our dedicated category: Mercedes Air Conditioning Compressors and Clutches. This will allow you to easily compare available solutions and select the appropriate part for your specific vehicle configuration.