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Details
| Specification | Value |
|---|---|
| Brand | TOPRAN |
| Operating Mode | EL |
| Number of pins | 6 -pin connector |
| Rated Voltage [V] | 12 V |
OE/OEM numbers (1)
Search by this OE number to find compatible parts
- BMW—1354 7 502 445
Where this part fits
Original-fit position for OE 13547502445. The red ring marks where this part installs on the vehicle.
About this product
When throttle body performance matters, the TOPRAN 503 135 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Operating Mode: Electric, Supplementary Article/Supplementary Info: 35, Number of pins: Plastic -pin connector, Rated Voltage [V]: Zinc V, Supplementary Article/Info 2: 774. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. 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: 08.14.056, 0892369, 12SKV040, 1311096 and 53 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.
Throttle Body buying guide
Why replace this part?
The throttle body controls the volume of air entering the engine in response to accelerator pedal position. Carbon buildup on the throttle plate causes rough idle, stalling, and poor throttle response. Electronic throttle bodies can also fail mechanically or electrically.
Signs you need a replacement
- Rough or unstable idle
- stalling at low speed
- poor throttle response
- check engine light with throttle position codes
- hunting idle after a cold start
When to replace
Clean every 50,000 miles with throttle body cleaner. Replace if the bore is worn or if the electronic actuator fails.
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 (62)
Show all 62 OE numbers
Throttle Body TOPRAN 503 135 — compatible car models
| Car models | BMW: 3 Convertible (E46), 3 Coupe (E46), 3 (E46), 3 Touring (E46), 5 (E39), 5 (E60), 5 Touring (E39), 7 (E65, E66, E67), X3 (E83), X5 (E53) (+3 more) |
|---|---|
| Engines | 330 Ci; 330 xi; 330 i; 530 i; 730 i, Li; 3.0 i xDrive; 3.0 i |
| Year of manufacture | 1995-2011 |
| Manufacturer article number (MPN) | 503 135 |
| OE part numbers | 1354 7 502 445 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
TOPRAN 503135 . Number of pins: 6 -pin connector. Operating Mode: EL. Rated Voltage [V]: 12 V. Supplementary Article/Info 2: 774. Supplementary Article/Supplementary Info: 35
- 1x Throttle Body
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 Throttle Body compatible with my car?
This Throttle Body 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 Throttle Body have?
This TOPRAN Throttle Body has the following specifications: Operating Mode: EL; Supplementary Article/Supplementary Info: 35; Number of pins: 6 -pin connector; Rated Voltage [V]: 12 V; Supplementary Article/Info 2: 774. Check the full specifications table above for complete details.
What OE part numbers does this Throttle Body replace?
This Throttle Body replaces OE part numbers: 1354 7 502 445. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Throttle Body cost?
This TOPRAN Throttle Body is available for £96.99. Throttle Body 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 Throttle Body?
Watch for rough or erratic idle, hesitation or stumbling during acceleration, poor fuel economy, black smoke from the exhaust, or a check engine light related to throttle position or idle control.
What tools do I need to replace a Throttle Body?
Tools needed: T20/T25 Torx or 8mm socket, electrical contact cleaner, new throttle body gasket, torque wrench. Difficulty: Moderate DIY. Safety warning: After fitting a new throttle body, a throttle position relearn procedure using a diagnostic tool is usually required -- without this, the engine may idle poorly or not at all.
Can I use this part as a replacement for OE 1354 7 502 445?
Yes, this TOPRAN Throttle Body is a direct replacement for OE part number 1354 7 502 445. 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.
