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Details
| Specification | Value |
|---|---|
| Brand | TOPRAN |
| Fitting Position | Bottom |
OE/OEM numbers (1)
Search by this OE number to find compatible parts
- BMW—1131 0 KIT 176
What's in the kit
This kit ships with 4 factory-matched components. Each part below is supplied as part of the kit; click any linked MPN to view that component on its own.
| # | Part number | Component | Qty |
|---|---|---|---|
| 1 | 502 980 | Timing Chain
| 1 |
| 2 | 502 603 | Guide, timing chain
| 1 |
| 3 | 502 612 | Tensioner Guide, timing chain
| 1 |
| 4 | 503 116 | Tensioner, timing chain
| 1 |
About this product
The TOPRAN Timing Chain Kit (503 186) 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: Fitting Position: U, Supplementary Article/Supplementary Info: 251, Supplementary Article/Supplementary Info: 253, Supplementary Article/Info 2: 904, Number of chain links: 104. 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: 0711 9 963 418, 08.12.060, 1131 0 KIT 176, 1131 1 432 176 and 17 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 (20)
Timing Chain Kit TOPRAN 503 186 — 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) | 503 186 |
| OE part numbers | 1131 0 KIT 176 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
TOPRAN 503186 . Chain Type: 1. Chain Type: 5. Fitting Position: U. Number of chain links: 104. Supplementary Article/Info 2: 904. Supplementary Article/Supplementary Info: 251. Supplementary Article/Supplementary Info: 253
- 1x Timing Chain Kit
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 Timing Chain Kit compatible with my car?
This Timing Chain Kit 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 Timing Chain Kit have?
This TOPRAN Timing Chain Kit has the following specifications: Fitting Position: U; Supplementary Article/Supplementary Info: 251; Supplementary Article/Supplementary Info: 253; Supplementary Article/Info 2: 904; Number of chain links: 104; Chain Type: 5. Check the full specifications table above for complete details.
What OE part numbers does this Timing Chain Kit replace?
This Timing Chain Kit replaces OE part numbers: 1131 0 KIT 176. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Timing Chain Kit cost?
This TOPRAN Timing Chain Kit is available for £49.99. Timing Chain Kit 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 Timing Chain Kit?
Replace the full kit — chain, tensioner, guides, and sprockets — when any one component shows wear. A rattling chain on startup, stretched links measured beyond spec, or oil pressure-related tensioner faults are all indicators.
What tools do I need to replace a Timing Chain Kit?
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 Timing Chain Kit fitted by a professional mechanic.
Can I use this part as a replacement for OE 1131 0 KIT 176?
Yes, this TOPRAN Timing Chain Kit is a direct replacement for OE part number 1131 0 KIT 176. 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.
