Pierburg 7.03635.12.0 Secondary Air Injection Pump

Pierburg Secondary Air Injection Pump

Pierburg 7.03635.12.0 is a 12V electric secondary air injection pump built as a standard replacement for emission control service. It pushes fresh air into the exhaust during cold starts to help reduce emissions and support smooth engine operation.

Brand Line: Genuine OE from HELLA indicates OE-level sourcing and application focus for emission control components. This Pierburg secondary air injection pump is a direct-fit style replacement for select Audi applications, including A8 Quattro, S8, S5, S4, A5, A5 Quattro, S6, S7, and RS7 models.

• 12V electric operating mode
• Standard replacement grade for emission control repair
• Designed for cold-start secondary air delivery
• OE-level fitment focus for select Audi vehicles
• Technical Information Number: SI 1150-11

Detailed Product Overview

The Pierburg 7.03635.12.0 secondary air injection pump is used in the air injection system to introduce fresh air into the exhaust stream after startup. That added oxygen helps the engine reach cleaner cold-start operation and supports the vehicle’s emission control strategy. This part cross-references FEL-PRO 35360 for the same application.

Compatible With select Audi A8 Quattro, S8, S5, S4, A5, A5 Quattro, S6, S7, and RS7 applications where the OE reference matches the listed part numbers. For buyers searching for a Pierburg secondary air injection pump for Audi A8 Quattro or Audi S8 emission repair, part number 7.03635.12.0 is the key identifier to verify before ordering.

Common Issues This Part May Address

• Cold-start emissions faults related to secondary air delivery
• Check engine light conditions tied to air injection system performance
• Insufficient fresh-air flow into the exhaust during startup
• Noisy, weak, or non-functioning electric air pump operation
• Emission control failures on select Audi A8 Quattro and S8 models

Installation Notes and Tips

Confirm the OE number, voltage, and vehicle application before installation. This pump is listed for 12V electric operation and should be matched to the exact OE reference shown in the fitment notes. Verify the vehicle’s emission system diagnosis, inspect related hoses and valves, and clear fault codes after repair if required.

Quality Assurance

Pierburg supplies OE-focused emission control components, and the Genuine OE from HELLA brand line reflects that original-equipment orientation. Part number 7.03635.12.0 is built as a standard replacement for the listed Audi applications and should be matched carefully to the OE number and fitment notes for proper service.