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Details
| Specification | Value |
|---|---|
| Brand | CAFFARO |
| MPN | 40-25 |
| Width [mm] | 28 mm |
| Inner Diameter [mm] | 9 mm |
| Outer Diameter [mm] | 80 mm |
OE/OEM numbers (2)
Search by this OE number to find compatible parts
- BMW—11 28 1 731 838
- BMW—1 731 838
Where this part fits
Original-fit position for OE 11281731838. The red ring marks where this part installs on the vehicle.
About this product
CAFFARO Deflection Guide Pulley V Ribbed Belt (40-25) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Width [mm]: 28 mm, Material: Plastic, Inner Diameter [mm]: Stainless Steel mm, Outer Diameter [mm]: 80 mm — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. 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: 003-30-12756, 03.224, 03-40006-SX, 03673 and 47 more. Matching these numbers confirms a like-for-like replacement with no loss of function. CAFFARO 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 (47)
Show all 47 OE numbers
Deflection Guide Pulley V Ribbed Belt CAFFARO 40-25 — compatible car models
| Car models | BMW: 5 (E34), 5 (E39), 5 Touring (E34), 5 Touring (E39), 7 (E32), 7 (E38), 8 (E31) |
|---|---|
| Engines | 530 i V8; 535 i; 530 i; 540 i; 730 i, iL V8; 730 i, iL; 840 i |
| Year of manufacture | 1985-2004 |
| Manufacturer article number (MPN) | 40-25 |
| OE part numbers | 11 28 1 731 838, 1 731 838 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
CAFFARO 40-25 . Inner Diameter [mm]: 9 mm. Material: 6. Outer Diameter [mm]: 80 mm. Width [mm]: 28 mm
- 1x Deflection Guide Pulley V Ribbed Belt
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 Deflection Guide Pulley V Ribbed Belt compatible with my car?
This Deflection Guide Pulley V Ribbed Belt 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 CAFFARO Deflection Guide Pulley V Ribbed Belt have?
This CAFFARO Deflection Guide Pulley V Ribbed Belt has the following specifications: Width [mm]: 28 mm; Material: 6; Inner Diameter [mm]: 9 mm; Outer Diameter [mm]: 80 mm. Check the full specifications table above for complete details.
What OE part numbers does this Deflection Guide Pulley V Ribbed Belt replace?
This Deflection Guide Pulley V Ribbed Belt replaces OE part numbers: 11 28 1 731 838, 1 731 838. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Deflection Guide Pulley V Ribbed Belt cost?
This CAFFARO Deflection Guide Pulley V Ribbed Belt is available for £17.99. Deflection Guide Pulley V Ribbed Belt prices vary depending on brand, specifications, and vehicle compatibility. CAFFARO parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Deflection Guide Pulley V Ribbed Belt?
Regular inspection of your Deflection Guide Pulley V Ribbed Belt 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 Deflection Guide Pulley V Ribbed Belt?
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 Deflection Guide Pulley V Ribbed Belt fitted by a professional mechanic.
Can I use this part as a replacement for OE 11 28 1 731 838?
Yes, this CAFFARO Deflection Guide Pulley V Ribbed Belt is a direct replacement for OE part number 11 28 1 731 838. 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.
