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Details
| Specification | Value |
|---|---|
| Brand | HEPU |
| MPN | p421 |
| Operating Mode | ME |
OE/OEM numbers (2)
Search by this OE number to find compatible parts
- BMW—11 51 7 807 311
- BMW—7807311
Where this part fits
Original-fit position for OE 11517807311. The red ring marks where this part installs on the vehicle.
About this product
The HEPU Water Pump Engine Cooling (P421) is a professional-grade replacement component engineered for long service life and reliable operation across all conditions your vehicle encounters. The part is built to the following specification: Operating Mode: Mesh Filter, Pulleys: Aluminium, Supplementary Article/Supplementary Info: 321. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit BMW 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: 101039, 10475, 10815014, 11 51 7 807 311 and 52 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 (54)
Show all 54 OE numbers
Water Pump Engine Cooling HEPU P421 — compatible car models
| Car models | BMW: 1 Convertible (E88), 1 Coupe (E82), 1 (E81), 1 (E87), 3 Convertible (E93), 3 Coupe (E92), 3 (E90), 3 Touring (E91), 5 (E60), 5 Touring (E61) (+2 more) |
|---|---|
| Engines | 118 d; 116 d; 320 d; 316 d; 318 d; 520 d; sDrive 18 d; 2.0 sd |
| Year of manufacture | 2001-2015 |
| Manufacturer article number (MPN) | P421 |
| OE part numbers | 11 51 7 807 311, 7807311 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
HEPU p421 . Operating Mode: ME. Pulleys: 2. Supplementary Article/Supplementary Info: 321
- 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 BMW 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: Operating Mode: ME; Pulleys: 2; Supplementary Article/Supplementary Info: 321. 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: 11 51 7 807 311, 7807311. 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 £86.99. 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 11 51 7 807 311?
Yes, this HEPU Water Pump Engine Cooling is a direct replacement for OE part number 11 51 7 807 311. 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.
