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Details
| Specification | Value |
|---|---|
| Brand | VAICO |
| MPN | v20-1591 |
| Inner Diameter [mm] | 40 mm |
| Width 1 [mm] | 42 mm |
| Outer Diameter 1 [mm] | 122 mm |
OE/OEM numbers (2)
Search by this OE number to find compatible parts
- BMW—11 51 1 436 590
- BMW—1 436 590
Where this part fits
Original-fit position for OE 11511436590. The red ring marks where this part installs on the vehicle.
About this product
When belt pulley water pump performance matters, the VAICO V20-1591 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Number of ribs: Plastic, Inner Diameter [mm]: 40 mm, Width 1 [mm]: 42 mm, Outer Diameter 1 [mm]: 122 mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Compatible with BMW 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: 001-10-17072, 11 51 1 436 590, 1 436 590, 20-1591 and 4 more. Matching these numbers confirms a like-for-like replacement with no loss of function. VAICO is a recognised supplier of automotive engine timing 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 (6)
Belt Pulley Water Pump VAICO V20-1591 — compatible car models
| Car models | BMW: 3 Compact (E46), 3 Convertible (E46), 3 Coupe (E46), 3 (E46), 3 Touring (E46), 5 (E39), 5 (E60), 5 Touring (E39), 5 Touring (E61), 7 (E38) (+6 more) |
|---|---|
| Engines | 325 ti; 320 Ci; 320 i; 520 i; 525 i; 728 i, iL; 730 i, Li; 2.5 i; 3.0 i; 2.8 i; 2.0 i; 2.2 i |
| Year of manufacture | 1994-2011 |
| Manufacturer article number (MPN) | V20-1591 |
| OE part numbers | 11 51 1 436 590, 1 436 590 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
VAICO v20-1591 Original VAICO Quality. Inner Diameter [mm]: 40 mm. Number of ribs: 6. Outer Diameter 1 [mm]: 122 mm. Width 1 [mm]: 42 mm
- 1x Belt Pulley Water 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 Belt Pulley Water Pump compatible with my car?
This Belt Pulley Water Pump 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 VAICO Belt Pulley Water Pump have?
This VAICO Belt Pulley Water Pump has the following specifications: Number of ribs: 6; Inner Diameter [mm]: 40 mm; Width 1 [mm]: 42 mm; Outer Diameter 1 [mm]: 122 mm. Check the full specifications table above for complete details.
What OE part numbers does this Belt Pulley Water Pump replace?
This Belt Pulley Water Pump replaces OE part numbers: 11 51 1 436 590, 1 436 590. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Belt Pulley Water Pump cost?
This VAICO Belt Pulley Water Pump is available for £31.99. Belt Pulley Water Pump prices vary depending on brand, specifications, and vehicle compatibility. VAICO parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Belt Pulley Water Pump?
Regular inspection of your Belt Pulley Water 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 Belt Pulley Water 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 Belt Pulley Water Pump fitted by a professional mechanic.
Can I use this part as a replacement for OE 11 51 1 436 590?
Yes, this VAICO Belt Pulley Water Pump is a direct replacement for OE part number 11 51 1 436 590. 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 VAICO V20-1591 the same as the VAICO V20-1592?
No, while both are Belt Pulley Water Pump parts, they are different products. The VAICO V20-1591 has Number of ribs: 6, Inner Diameter [mm]: 40 mm, Width 1 [mm]: 42 mm. The VAICO V20-1592 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.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
