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Details
| Specification | Value |
|---|---|
| Brand | TOPRAN |
OE/OEM numbers (2)
Search by this OE number to find compatible parts
- BMW—1131 1 726 471
- BMW—1131 1 726 480
Where this part fits
Original-fit position for OE 11311726480. The red ring marks where this part installs on the vehicle.
About this product
TOPRAN Guide Timing Chain (502 603) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Base body material: 101 — 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: 003-30-12441, 08.12.063, 1075T0002, 1131 1 726 471 and 18 more. Matching these numbers confirms a like-for-like replacement with no loss of function. TOPRAN 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.
About TOPRAN
TOPRAN, part of the Hans Thomsen Group headquartered in Hamburg, Germany, is a growing independent aftermarket brand focused on providing quality parts at accessible prices. TOPRAN offers a comprehensive range covering engine, cooling, electrical, braking, and body components for European vehicles. All TOPRAN products are manufactured to meet OE specifications and undergo quality testing before distribution. Combining German quality management with competitive pricing, TOPRAN is an excellent choice for cost-conscious motorists and workshops who do not want to compromise on part quality.
Suitable cars
Equivalent products (21)
Show all 21 OE numbers
Guide Timing Chain TOPRAN 502 603 — compatible car models
| Car models | BMW: 3 Compact (E36), 3 Compact (E46), 3 Convertible (E36), 3 Convertible (E46), 3 Coupe (E36), 3 Coupe (E46), 3 (E36), 3 (E46), 3 Touring (E36), 3 Touring (E46) (+11 more) |
|---|---|
| Engines | 323 ti; 325 ti; 320 i; 320 Ci; 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 | 1990-2011 |
| Manufacturer article number (MPN) | 502 603 |
| OE part numbers | 1131 1 726 471, 1131 1 726 480 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
TOPRAN 502603 . Base body material: 101
- 1x Guide Timing Chain
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 Guide Timing Chain compatible with my car?
This Guide Timing Chain 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 TOPRAN Guide Timing Chain have?
This TOPRAN Guide Timing Chain has the following specifications: Base body material: 101. Check the full specifications table above for complete details.
What OE part numbers does this Guide Timing Chain replace?
This Guide Timing Chain replaces OE part numbers: 1131 1 726 471, 1131 1 726 480. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Guide Timing Chain cost?
This TOPRAN Guide Timing Chain is available for £9.99. Guide Timing Chain prices vary depending on brand, specifications, and vehicle compatibility. TOPRAN parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Guide Timing Chain?
Regular inspection of your Guide Timing Chain 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 Guide Timing Chain?
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 Guide Timing Chain fitted by a professional mechanic.
Can I use this part as a replacement for OE 1131 1 726 471?
Yes, this TOPRAN Guide Timing Chain is a direct replacement for OE part number 1131 1 726 471. 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 TOPRAN 502 603 the same as the TOPRAN 113 782?
No, while both are Guide Timing Chain parts, they are different products. The TOPRAN 502 603 has Base body material: 101. The TOPRAN 113 782 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.
