Pierburg 7.03635.37.0 Secondary Air Injection Pump

Brand	Pierburg 7.03635.37.0
Grade Type	Standard replacement
Operating Mode	Electric
Voltage [VDC]	12
Product line	HELLA OE Certified
Fits	Volkswagen · 16 vehicles

OE-style replacement. Standard replacement grade for emissions system service.

Electric operation. 12V design provides controlled air injection on cold starts.

Genuine OE line. Pierburg is offered as Genuine OE from HELLA.

Cross-references 04E 131 333 A, 04E131333A and 04E959231D for the same application. See all 8.

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Secondary Air Injection Pump Overview

Pierburg secondary air injection pump 7.03635.37.0 is a standard replacement part for emissions control systems. It pushes fresh air into the exhaust during cold starts to reduce emissions and support smooth engine operation.

Key Features

Electric 12V operating mode for controlled air injection.
Standard replacement grade for OE-style service.
Genuine OE from HELLA product line.
Built for secondary air injection system function.

Fitment Details

Fits 2021 Volkswagen Passat, N/A. 12V - Electric; HELLA OE Certified.
Fits 2018-2019 Volkswagen Beetle, N/A. With OE No. 04E131333A; Genuine OE from HELLA.
Fits 2018-2019 Volkswagen Passat, N/A. To 04/30/2018; Genuine OE from HELLA.
Fits 2015-2018 Volkswagen Jetta, N/A. 12V - Electric; Genuine OE from HELLA.
Fits 2013 Volkswagen Jetta, N/A. 12V - Electric; Genuine OE from HELLA.
Fits 2013-2017 Volkswagen Beetle, N/A. 12V - Electric; Genuine OE from HELLA.
Fits 2014 Volkswagen Jetta, N/A. With OE No. 04E131333A; Genuine OE from HELLA.

What It Helps Address

Cold-start emissions concerns.
Insufficient fresh air delivery into the exhaust.
Secondary air injection system faults.
Rough operation related to emissions control issues.

Installation Notes

Confirm the vehicle uses a 12V electric secondary air injection pump and match the OE reference before installation. Verify the listed Volkswagen Passat, Volkswagen Beetle, and Volkswagen Jetta applications against the vehicle build date and OE number 04E131333A. Part number 7.03635.37.0 should be checked against the existing unit before replacement.

Quality Assurance

Pierburg is presented here as Genuine OE from HELLA, with OE-level performance referenced in the manufacturer description. Part number 7.03635.37.0 is built as a standard replacement for emissions system service.

This part fits 16 vehicles

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

Year	Make	Model	Submodel	Body Type	Liters	Cylinders	Fuel Type	Notes
2021	Volkswagen	Passat	SE	—	—	—	—	12V - Electric; HELLA OE Certified
2019	Volkswagen	Beetle	—	—	2.0L	L4	—	With OE No. 04E131333A; Genuine OE from HELLA
2019	Volkswagen	Passat	—	—	2.0L	L4	GAS	To 04/30/2018; Genuine OE from HELLA
2018	Volkswagen	Beetle	—	—	2.0L	L4	—	With OE No. 04E131333A; Genuine OE from HELLA
2018	Volkswagen	Jetta	—	—	2.0L	L4	—	12V - Electric; Genuine OE from HELLA
2018	Volkswagen	Passat	—	—	2.0L	L4	—	To 04/30/2018; Genuine OE from HELLA
2017	Volkswagen	Beetle	—	Hatchback	2.0L	L4	—	12V - Electric; Genuine OE from HELLA
2017	Volkswagen	Jetta	—	Sedan	2.0L	L4	—	12V - Electric; Genuine OE from HELLA
2016	Volkswagen	Beetle	—	Hatchback	2.0L	L4	—	12V - Electric; Genuine OE from HELLA
2016	Volkswagen	Jetta	—	—	2.0L	L4	—	12V - Electric; Genuine OE from HELLA
2015	Volkswagen	Beetle	—	Hatchback	2.0L	L4	—	12V - Electric; Genuine OE from HELLA
2015	Volkswagen	Jetta	—	—	2.0L	L4	—	12V - Electric; Genuine OE from HELLA
2014	Volkswagen	Beetle	—	Hatchback	2.0L	L4	—	12V - Electric; Genuine OE from HELLA
2014	Volkswagen	Jetta	—	Sedan	2.0L	L4	—	With OE No. 04E131333A; Genuine OE from HELLA
2013	Volkswagen	Beetle	—	Hatchback	2.0L	L4	—	12V - Electric; Genuine OE from HELLA
2013	Volkswagen	Jetta	—	Sedan	2.0L	L4	—	12V - Electric; Genuine OE from HELLA
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Directly replaces or cross-references 8 part numbers

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

04E 131 333 A04E131333A04E959231D04E95925304E959253A04E E13 133 A04E E95 923 D04E E95 925 A