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Details
| Specification | Value |
|---|---|
| Brand | PIERBURG |
| MPN | 7.21851.31.0 |
| Voltage [V] | 12 V |
| Operating Mode | EL |
OE/OEM numbers (3)
Search by this OE number to find compatible parts
- AUDI / SEAT / SKODA / VW—06A 959 253
- AUDI / SEAT / SKODA / VW—078 906 601 D
- AUDI / SEAT / SKODA / VW—078 906 601 M
Where this part fits
Original-fit position for OE 078906601D. The red ring marks where this part installs on the vehicle.
About this product
Sourced from PIERBURG, this secondary air pump (7.21851.31.0) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Voltage [V]: Zinc V, Operating Mode: Electric — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Verified to fit AUDI, SEAT, SKODA, VW models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 06A 959 253, 078 906 601 D, 078 906 601 M, 0899013 and 9 more. Matching these numbers confirms a like-for-like replacement with no loss of function. PIERBURG is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
Suitable cars
Equivalent products (11)
Secondary Air Pump PIERBURG 7.21851.31.0 — compatible car models
| Car models | AUDI: A3 (8L1), A4 B5 (8D2), A4 B5 Avant (8D5), A4 B6 (8E2), A4 B6 Avant (8E5), A4 B6 Convertible (8H7), A4 B7 (8EC), A4 B7 Avant (8ED), A6 C5 (4B2, 4B4), A6 C5 Avant (4B5, 4B6) (+2 more); SEAT: CORDOBA (6K1, 6K2), IBIZA II (6K1), LEON (1M1), TOLEDO II (1M2); SKODA: OCTAVIA I (1U2), OCTAVIA I Combi (1U5); VW: BORA I (1J2), BORA Variant (1J6), GOLF IV (1J1), GOLF IV Cabriolet (1E7), GOLF IV Variant (1J5), NEW BEETLE (9C1, 1C1), NEW BEETLE Convertible (1Y7), PASSAT B5 (3B2), PASSAT B5 Variant (3B5) |
|---|---|
| Engines | 1.8 T; 1.6; 2.4; 1.8; 1.8 T 20V Cupra; 1.8 20V T; 1.8 20VT; 1.8 20V; 2.0 |
| Year of manufacture | 1993-2013 |
| Manufacturer article number (MPN) | 7.21851.31.0 |
| OE part numbers | 06A 959 253, 078 906 601 D, 078 906 601 M |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
PIERBURG 7.21851.31.0 . Operating Mode: EL. Voltage [V]: 12 V
- 1x Secondary Air Pump
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Express and standard shipping available.
- Standard delivery: 2-5 business days
- Express delivery: 1-2 business days
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this Secondary Air Pump compatible with my car?
This Secondary Air Pump fits AUDI, SEAT, SKODA, VW vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this PIERBURG Secondary Air Pump have?
This PIERBURG Secondary Air Pump has the following specifications: Voltage [V]: 12 V; Operating Mode: EL. Check the full specifications table above for complete details.
What OE part numbers does this Secondary Air Pump replace?
This Secondary Air Pump replaces OE part numbers: 06A 959 253, 078 906 601 D, 078 906 601 M. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Secondary Air Pump cost?
This PIERBURG Secondary Air Pump is available for £414.99. Secondary Air Pump prices vary depending on brand, specifications, and vehicle compatibility. PIERBURG parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Secondary Air Pump?
Regular inspection of your Secondary Air Pump is recommended as part of routine vehicle maintenance. Watch for changes in performance, unusual noises, or visual signs of wear. Consult your vehicle's owner manual for manufacturer-recommended replacement intervals specific to your make and model.
What tools do I need to replace a Secondary Air Pump?
Tools required vary by vehicle make and model. Generally, a basic socket set, screwdrivers, and vehicle-specific tools may be needed. We recommend consulting a workshop manual for your specific vehicle, or having the Secondary Air Pump fitted by a professional mechanic.
Can I use this part as a replacement for OE 06A 959 253?
Yes, this PIERBURG Secondary Air Pump is a direct replacement for OE part number 06A 959 253. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Is the PIERBURG 7.21851.31.0 the same as the PIERBURG 7.03635.46.0?
No, while both are Secondary Air Pump parts, they are different products. The PIERBURG 7.21851.31.0 has Voltage [V]: 12 V, Operating Mode: EL. The PIERBURG 7.03635.46.0 may differ in dimensions, fitting position, or material composition. Always verify compatibility with your specific vehicle using our vehicle selector, or contact our customer service team for assistance.
