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Details
| Specification | Value |
|---|---|
| Brand | TOPRAN |
| Fitting Position | Right Front |
| Number of pins | 7 -pin connector |
| paired article number | 623 636 |
OE/OEM numbers (2)
Search by this OE number to find compatible parts
- BMW—5121 7 155 154
- BMW—5121 7 185 692
Where this part fits
Original-fit position for OE 51217185692. The red ring marks where this part installs on the vehicle.
About this product
When door lock performance matters, the TOPRAN 623 640 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Fitting Position: RV, Left-/right-hand drive vehicles: Steel, Number of pins: Ceramic -pin connector, paired article number: 623 636. 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: 12133172, 132-004-048, 1361D0323, 16SKV762 and 25 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.
Door Lock buying guide
Why replace this part?
Door lock actuators use an electric motor and linkage to engage or disengage the door latch on central locking command. A failed actuator prevents remote locking from functioning on that door, creating a security vulnerability. The electric motor windings and plastic gear teeth inside the actuator are the most common failure points.
Signs you need a replacement
- One door not responding to the central locking remote
- clicking or grinding sound inside the door when locking
- door locking or unlocking intermittently
- door that must be locked manually while others lock automatically
- visible sluggish movement of the lock mechanism
When to replace
No set interval — actuators typically last 10–15 years or 100,000 cycles. Replace on failure. Access usually requires removing the door trim panel.
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 (29)
Show all 29 OE numbers
Door Lock TOPRAN 623 640 — compatible car models
| Car models | BMW: 5 (F10), 5 Touring (F11), 7 (F01, F02, F03, F04) |
|---|---|
| Engines | 518 d; 730 d |
| Year of manufacture | 2008-2017 |
| Manufacturer article number (MPN) | 623 640 |
| OE part numbers | 5121 7 155 154, 5121 7 185 692 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
TOPRAN 623640 . Fitting Position: RV. Left-/right-hand drive vehicles: 1. Number of pins: 7 -pin connector. paired article number: 623 636
- 1x Door Lock
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 Door Lock compatible with my car?
This Door Lock 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 Door Lock have?
This TOPRAN Door Lock has the following specifications: Fitting Position: RV; Left-/right-hand drive vehicles: 1; Number of pins: 7 -pin connector; paired article number: 623 636. Check the full specifications table above for complete details.
What OE part numbers does this Door Lock replace?
This Door Lock replaces OE part numbers: 5121 7 155 154, 5121 7 185 692. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Door Lock cost?
This TOPRAN Door Lock is available for £153.99. Door Lock 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 Door Lock?
Signs include the door not locking or unlocking with the key fob, difficulty turning the key in the barrel, the latch not engaging properly when the door is closed, or the door opening without a handle pull due to a worn latch.
What tools do I need to replace a Door Lock?
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 Door Lock fitted by a professional mechanic.
Can I use this part as a replacement for OE 5121 7 155 154?
Yes, this TOPRAN Door Lock is a direct replacement for OE part number 5121 7 155 154. 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.
