Pierburg 7.03635.39.0 Secondary Air Injection Pump

Pierburg Secondary Air Injection Pump 7.03635.39.0

Pierburg 7.03635.39.0 is a 12-volt electric secondary air injection pump for emission control systems. It is built for direct replacement use on select Audi and Volkswagen applications, including late-model A3, Q3, S3, Golf R, GTI, and Tiguan platforms.

Key Features

• Electric secondary air injection pump for emission control service
• 12 V operating mode for OE-style system integration
• Direct replacement part number: 7.03635.39.0
• Cross-references Pierburg OE numbers 04E959231 and 04E959231A
• Compatible with multiple Audi and Volkswagen fitments across 2014-2024 model years

Detailed Description

This Pierburg secondary air injection pump, part number 7.03635.39.0, supplies the air injection system during cold-start emissions operation. It is an electric 12-volt unit used on a wide range of Audi and Volkswagen vehicles, including Audi A3, Audi Q3, Audi S3, Volkswagen Golf R, Volkswagen GTI, and Volkswagen Tiguan applications. For buyers searching for a secondary air injection pump for Audi A3 2015-2024 or Volkswagen GTI 2015-2024, this part number provides a direct OE-style replacement path when the original pump has failed.

This part cross-references Pierburg OE numbers 04E959231 and 04E959231A for the same application.

What It Is Used For

• Restoring secondary air injection function after pump failure
• Addressing emissions-related fault codes tied to the air injection system
• Replacing a noisy, weak, or inoperative electric air pump
• Supporting cold-start emissions system operation on Audi and Volkswagen models
• Replacing OE pump part number 7.03635.39.0 on listed applications

Installation Notes and Tips

Verify the OE number on the original pump before ordering, especially on 2021-2024 Audi and Volkswagen vehicles that list specific OE references such as 04E959231C or 04E959231E. Confirm the vehicle’s exact model year and engine/emissions configuration against the fitment notes before installation. Because this is an emission control component, clear diagnostic trouble codes and verify system operation after replacement.

Quality Assurance

Pierburg is an established OE supplier in engine management and emission control components. Part number 7.03635.39.0 is built as an electric 12 V secondary air injection pump for direct-fit replacement use on the listed Audi and Volkswagen applications.

Compatible Vehicles

• Fits 2022-2024 Audi A3, with OE No. 04E959231E
• Fits 2023-2024 Audi Q3, with OE No. 04E959231E
• Fits 2022-2024 Audi S3, with OE No. 04E959231E
• Fits 2022-2024 Volkswagen Golf R, with OE No. 04E959231E
• Fits 2022-2024 Volkswagen GTI, with OE No. 04E959231E
• Fits 2021-2024 Volkswagen Tiguan, with OE No. 04E959231E
• Fits 2021-2023 Audi TT Quattro, with OE No. 04E959231C
• Fits 2021-2023 Audi TTS Quattro, with OE No. 04E959231C
• Fits 2021-2022 Audi Q3, with OE No. 04E959231C, 04E959231E
• Fits 2021-2022 Volkswagen Jetta, with OE No. 04E959231C
• Fits 2021 Volkswagen GTI, with OE No. 04E959231C
• Fits 2015-2020 Audi A3
• Fits 2015-2020 Audi A3 Quattro
• Fits 2019-2020 Audi Q3
• Fits 2016-2020 Audi TT Quattro
• Fits 2016-2020 Audi TTS Quattro
• Fits 2020 Volkswagen Golf
• Fits 2015-2018 Volkswagen Golf
• Fits 2015-2020 Volkswagen GTI
• Fits 2019-2020 Volkswagen Jetta
• Fits 2018-2020 Volkswagen Tiguan
• Fits 2018-2019 Volkswagen Beetle, to 10/08/2018
• Fits 2017-2019 Volkswagen Golf Alltrack
• Fits 2015-2019 Volkswagen Golf R
• Fits 2015-2019 Volkswagen Golf SportWagen
• Fits 2014-2019 Volkswagen Passat
• Fits 2014 Volkswagen Jetta, from VIN # AUGM500001