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Details
| Specification | Value |
|---|---|
| Brand | HEPU |
| MPN | p521 |
| Operating Mode | ME |
OE/OEM numbers (10)
Search by this OE number to find compatible parts
- SEAT / VW—030 121 005 A
- SEAT / VW—031 121 004
- SEAT / VW—031 121 004 A
- VW—031 121 004AV
- VW—031 121 004AX
- VW—031 121 004 X
- SEAT / VW—031 121 005 A
- SEAT / VW—031 121 005 C
- VW—031 121 005CV
- VW—031 121 005CX
Where this part fits
Original-fit position for OE 031121005C. The red ring marks where this part installs on the vehicle.
About this product
HEPU Water Pump Engine Cooling (P521) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Number of Teeth: Composite, Operating Mode: Mesh Filter, Pulleys: 0, Supplementary Article/Supplementary Info: 35, Water pump impeller material: Composite — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Compatible with SEAT, VW vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. This part supersedes original equipment references: 030 121 005 A, 031 121 004, 031 121 004 A, 031 121 004AV and 75 more. Matching these numbers confirms a like-for-like replacement with no loss of function. HEPU 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 (75)
Show all 75 OE numbers
Water Pump Engine Cooling HEPU P521 — compatible car models
| Car models | SEAT: TERRA (24), TERRA Estate Van (024A); VW: POLO CLASSIC (86C, 80), POLO Coupe (86C, 80), POLO Hatchback Van (86CF), POLO II (86C, 80) |
|---|---|
| Engines | 1.3 D; 1.4 D |
| Year of manufacture | 1981-1996 |
| Manufacturer article number (MPN) | P521 |
| OE part numbers | 030 121 005 A, 031 121 004, 031 121 004 A, 031 121 004AV, 031 121 004AX, 031 121 004 X, 031 121 005 A, 031 121 005 C, 031 121 005CV, 031 121 005CX |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
HEPU p521 . Number of Teeth: 18. Operating Mode: ME. Pulleys: 0. Supplementary Article/Supplementary Info: 35. Water pump impeller material: 18
- 1x Water Pump Engine Cooling
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 Water Pump Engine Cooling compatible with my car?
This Water Pump Engine Cooling fits SEAT, 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 HEPU Water Pump Engine Cooling have?
This HEPU Water Pump Engine Cooling has the following specifications: Number of Teeth: 18; Operating Mode: ME; Pulleys: 0; Supplementary Article/Supplementary Info: 35; Water pump impeller material: 18. Check the full specifications table above for complete details.
What OE part numbers does this Water Pump Engine Cooling replace?
This Water Pump Engine Cooling replaces OE part numbers: 030 121 005 A, 031 121 004, 031 121 004 A, 031 121 004AV, 031 121 004AX, 031 121 004 X, 031 121 005 A, 031 121 005 C and 2 more. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Water Pump Engine Cooling cost?
This HEPU Water Pump Engine Cooling is available for £41.99. Water Pump Engine Cooling prices vary depending on brand, specifications, and vehicle compatibility. HEPU parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Water Pump Engine Cooling?
Signs include coolant leaks near the front-centre of the car, whining or grinding noise from the engine, engine overheating, or steam coming from the radiator. Water pumps typically last 60,000-90,000 miles.
What tools do I need to replace a Water Pump Engine Cooling?
Tools needed: coolant drain pan, hose clamp pliers, 8-13mm socket set, torque wrench, gasket scraper, new coolant (correct specification). Difficulty: Professional recommended. Safety warning: Never open the cooling system when the engine is hot -- pressurised coolant will cause severe scalding. Allow to cool completely before draining.
Can I use this part as a replacement for OE 030 121 005 A?
Yes, this HEPU Water Pump Engine Cooling is a direct replacement for OE part number 030 121 005 A. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
