More VW Secondary Air Injection Pump - Genuine VW 04E959231F
VW Secondary Air Injection Pump - Genuine VW 04E959231F VW Secondary Air Injection Pump - Genuine VW 04E959231F
Genuine VW
SKU: VAG-04E959231F

VW Secondary Air Injection Pump - Genuine VW 04E959231F

Passat

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Core charges are assigned to parts that have reusable components by manufacturers to encourage the return of the used units. Once you return the old part you will be refunded for your core charge, details regarding the return will be emailed to you once you place the order. Note: The customer is responsible for the cost of return shipping.
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Description

Details

SKU:
VAG-04E959231F
FCP Euro ID:
784572
Quality:
Genuine

OE Numbers

04E959231F

MFG Numbers

N/A

Product Information

The secondary air pump, or smog pump, is a key component of your Volkswagen emissions system and Is responsible for injecting air into the exhaust system at startup in an effort to heat up the catalytic converter helping it to reach optimal operating temperature and reducing harmful emissions. The pump can wear over time typically due to the motor within the unit becoming inoperative and failing to work which causes a check engine light.

Secondary Air Injection Pump

A Secondary Air Injection Pump is part of a vehicle’s emissions control system. Its main purpose is to inject fresh air into the exhaust stream during cold starts. This extra oxygen helps the catalytic converter heat up faster and burn off excess fuel, reducing harmful emissions before the engine reaches operating temperature. The pump is usually electric or belt-driven and works only for a short time after startup.

Secondary Air Injection Pump Failure Symptoms
  • Check Engine Light (CEL) illuminated, often with fault codes (such as P0410, P0411, or related to “secondary air system”).
  • Rough idle or hesitation on cold starts due to improper air-fuel mixture before the catalytic converter stabilizes.
  • Failed emissions test or increased exhaust smell, as the system cannot reduce pollutants effectively during startup.

About Genuine VW

The Volkswagen Group, also known as “VAG”, consists of Volkswagen, Audi, Lamborghini, Bentley, Bugatti, Porsche, Ducati, MAN, Scania, SEAT, and Skoda. The original parts used by VW to build your car are available as replacement parts under the “Genuine VW” brand. Manufactured under the direction of VW, expect excellent quality and a premium price since these parts are available exclusively through the VW Dealership network.

You may not realize this, but the parts that make up your VW are not necessarily manufactured by VW. No cause for concern, as VW designs the part, hires a manufacturer, and ensures its quality to you. In fact, many of these manufacturers have been making parts for VW for decades. In our industry these manufacturers are called OEM (Original Equipment Manufacturers), and these are often brands you recognize, including Lemforder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, Corteco, and more. Don’t be surprised to open that Genuine VW parts box and find an OEM branded part inside, simply with the addition of a VW logo.

Be sure to keep an eye out for OE tags on our product pages to quickly identify parts coming directly from OE manufacturers. That extra bit of insight could save you some serious money while shopping! Refer to our OE Academy for further information regarding the OE/OEM tags throughout the site.

Fits These Cars

Volkswagen Passat

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  • 2018 Volkswagen Passat SE Secondary Air Injection Pump
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  • 2018 Volkswagen Passat SEL Premium Secondary Air Injection Pump
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  • 2018 Volkswagen Passat SEL Premium Secondary Air Injection Pump
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  • 2019 Volkswagen Passat SE R-Line Secondary Air Injection Pump
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  • 2019 Volkswagen Passat Wolfsburg Edition Secondary Air Injection Pump
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  • 2020 Volkswagen Passat R-Line Secondary Air Injection Pump
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  • 2020 Volkswagen Passat S Secondary Air Injection Pump
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  • 2020 Volkswagen Passat SE Secondary Air Injection Pump
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  • 2020 Volkswagen Passat SEL Secondary Air Injection Pump
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  • 2021 Volkswagen Passat R-Line Secondary Air Injection Pump
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  • 2021 Volkswagen Passat S Secondary Air Injection Pump
    Automatic FWD Sedan 2.0L L4 DTDA Gas
  • 2021 Volkswagen Passat SE Secondary Air Injection Pump
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  • 2022 Volkswagen Passat Limited Edition Secondary Air Injection Pump
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  • 2022 Volkswagen Passat R-Line Secondary Air Injection Pump
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  • 2022 Volkswagen Passat SE Secondary Air Injection Pump
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