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Details
| Specification | Value |
|---|---|
| Brand | TOPRAN |
| Category | drive belt |
| Length [mm] | 965 mm |
| Width [mm] | 10 mm |
OE/OEM numbers (7)
Search by this OE number to find compatible parts
- VW—021 903 137A
- VW—044 903 137L
- VW—044 903 137M
- VW—068 903 137D
- BMW—1151 1 706 710
- BMW—1231 1 254 885
- BMW—1231 1 288 475
Where this part fits
Original-fit position for OE 11511706710. The red ring marks where this part installs on the vehicle.
About this product
The TOPRAN drive belt (101 504) 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: Driven Units: Steel, Driven Units: Aluminium, Length [mm]: 965 mm, Width [mm]: Brass mm, Belts: Aluminium. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit BMW, VW 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: 021 903 137A, 02560, 044 903 137L, 044 903 137M and 110 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.
drive belt buying guide
Why replace this part?
Drive belts transmit rotational power from the crankshaft to engine accessories including the alternator, power steering pump, air conditioning compressor, and water pump. On serpentine systems, a single belt drives all accessories; a failure leaves the vehicle without charging, cooling, or power steering simultaneously.
Signs you need a replacement
- Squealing noise, especially on cold start or when loads increase (A/C on)
- visible cracks, missing ribs, or glazing on the belt
- battery warning light
- power steering suddenly heavy
- belt debris visible in the engine bay
When to replace
Every 60,000–80,000 miles or 5 years, whichever comes first. Always replace the tensioner and idler pulleys at the same time — worn pulleys rapidly destroy a new belt.
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 (118)
Show all 118 OE numbers
drive belt TOPRAN 101 504 — compatible car models
| Car models | BMW: 3 Convertible (E30), 3 (E30), 3 Touring (E30), 5 (E28); VW: GOLF II (19E, 1G1), JETTA II (19E, 1G2, 165), TRANSPORTER T4 Bus (70B, 70C, 7DB, 7DK, 70J, 70K, 7DC, 7DJ), TRANSPORTER T4 Platform/Chassis (70E, 70L, 70M, 7DE, 7DL, 7D, TRANSPORTER T4 Van (70A, 70H, 7DA, 7DH) |
|---|---|
| Engines | 320 i; 520 i; 1.6 D; 2.0 |
| Year of manufacture | 1981-2004 |
| Manufacturer article number (MPN) | 101 504 |
| OE part numbers | 021 903 137A, 044 903 137L, 044 903 137M, 068 903 137D, 1151 1 706 710, 1231 1 254 885, 1231 1 288 475 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
TOPRAN 101504 drive belt. Base body material: 182. Belt Material: 257. Belts: 1. Belts: 2. Driven Units: 1. Driven Units: 2. Length [mm]: 965 mm. Width [mm]: 10 mm
- 1x drive 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 drive belt compatible with my car?
This drive belt fits BMW, VW 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 drive belt have?
This TOPRAN drive belt has the following specifications: Driven Units: 1; Driven Units: 2; Length [mm]: 965 mm; Width [mm]: 10 mm; Belts: 2; Belts: 1. Check the full specifications table above for complete details.
What OE part numbers does this drive belt replace?
This drive belt replaces OE part numbers: 021 903 137A, 044 903 137L, 044 903 137M, 068 903 137D, 1151 1 706 710, 1231 1 254 885, 1231 1 288 475. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a drive belt cost?
This TOPRAN drive belt is available for £6.99. Drive belt 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 drive belt?
Signs include a squealing or chirping noise from the front of the engine (especially on startup), visible cracking or fraying of the belt, or accessories such as the alternator, power steering, or AC failing due to belt slip.
What tools do I need to replace a drive belt?
Tools needed: serpentine belt routing diagram (photograph or note the original routing before removal), belt tensioner tool or 3/8-inch drive breaker bar, socket set. Difficulty: Moderate DIY. Safety warning: The belt must follow the correct routing around all pulleys -- a misrouted belt will break immediately and simultaneously disable the alternator, power steering, and water pump.
Can I use this part as a replacement for OE 021 903 137A?
Yes, this TOPRAN drive belt is a direct replacement for OE part number 021 903 137A. 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.
