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BrandTOPRAN
MPN503 128
OE refs2
SKU0301-503 128

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BrandTOPRAN

OE/OEM numbers (2)

Search by this OE number to find compatible parts

Where this part fits

Original-fit position for OE 11317797514. The red ring marks where this part installs on the vehicle.

Camshaft sprocket — BMW 1 E81 — 11 Engine › 11_4089 timing gear timing chain top
BMW 1 E81 · 11 Engine › 11_4089 timing gear timing chain topPosition 04

About this product

The TOPRAN Gear Sprocket Camshaft (503 128) 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: Number of Teeth: 40, Engine Timing: Copper. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit BMW, MINI 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: 08.12.077, 101918, 1131 7 797 514, 1131 8 509 926 and 17 more. Matching these numbers confirms a like-for-like replacement with no loss of function. TOPRAN is a recognised supplier of automotive replacement 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

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Gear Sprocket Camshaft TOPRAN 503 128compatible car models

Car modelsBMW: 1 Convertible (E88), 1 Coupe (E82), 1 (E81), 1 (E87), 1 (F20), 1 (F21), 2 Coupe (F22, F87), 3 Convertible (E93), 3 Coupe (E92), 3 (E90) (+16 more); MINI: MINI CLUBMAN (R55), MINI Convertible (R57), MINI COUNTRYMAN (R60), MINI Coupe (R58)
Engines118 d; 116 d; 114 d; 218 d; 320 d; 316 d; 318 d; 420 d; 418 d; 520 d; 518 d; sDrive 16 d; 2.0 sd; sDrive 18 d; sDrive 25 d (+2 more)
Year of manufacture2001-2021
Manufacturer article number (MPN)503 128
OE part numbers1131 7 797 514, 1131 8 509 926
Compatibility check

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Description and what's included

TOPRAN 503128 . Engine Timing: 4. Number of Teeth: 40

What's included:
  • 1x Gear Sprocket Camshaft
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 Gear Sprocket Camshaft compatible with my car?

This Gear Sprocket Camshaft fits BMW, MINI 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 Gear Sprocket Camshaft have?

This TOPRAN Gear Sprocket Camshaft has the following specifications: Number of Teeth: 40; Engine Timing: 4. Check the full specifications table above for complete details.

What OE part numbers does this Gear Sprocket Camshaft replace?

This Gear Sprocket Camshaft replaces OE part numbers: 1131 7 797 514, 1131 8 509 926. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.

How much does a Gear Sprocket Camshaft cost?

This TOPRAN Gear Sprocket Camshaft is available for £18.99. Gear Sprocket Camshaft 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 Gear Sprocket Camshaft?

Regular inspection of your Gear Sprocket Camshaft 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 Gear Sprocket Camshaft?

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 Gear Sprocket Camshaft fitted by a professional mechanic.

Can I use this part as a replacement for OE 1131 7 797 514?

Yes, this TOPRAN Gear Sprocket Camshaft is a direct replacement for OE part number 1131 7 797 514. 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 503 128 the same as the TOPRAN 100 834?

No, while both are Gear Sprocket Camshaft parts, they are different products. The TOPRAN 503 128 has Number of Teeth: 40, Engine Timing: 4. The TOPRAN 100 834 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.

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