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Details
| Specification | Value |
|---|---|
| Brand | KOLBENSCHMIDT |
| Length [mm] | 52.6 mm |
| Cylinder Bore [mm] | 89 mm |
| Bolt Head Diameter [mm] | 22 mm |
| Compression Height [mm] | 32.1 mm |
| Bolt Length [mm] | 60 mm |
| Recess Depth 1 [mm] | 2.38 mm |
| Piston Clearance [mm] | 0,015 mm |
OE numbers (4)
Search by this OE number to find compatible parts
- BMW—11 25 7 576 475
- BMW—11 25 7 613 626
- BMW—7 576 475
- BMW—7 613 626
Where this part fits
Original-fit position for OE 11257576475.
What's in the kit
This kit ships with 3 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 | 61445 | Piston Ring
| 1 |
| 2 | 61604 | Piston Ring
| 1 |
| 3 | 61267 | Piston Ring
| 1 |
About this product
KOLBENSCHMIDT Piston (40631600) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Length [mm]: 52, Plastic mm, Cylinder Bore [mm]: 89 mm, Bolt Head Diameter [mm]: 22 mm, Component Number: 61604, Component Number: 61445 — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. 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: 11 25 7 576 475, 11 25 7 613 626, 7 576 475, 7 613 626. Matching these numbers confirms a like-for-like replacement with no loss of function. KOLBENSCHMIDT 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 with tracked delivery and a 14-day money-back guarantee with hassle-free returns.
Suitable cars
No equivalent parts found.
Piston KOLBENSCHMIDT 40631600 — compatible car models
| Car models | BMW: 5 (F10), 5 Gran Turismo (F07), 5 Touring (F11), 6 Convertible (F12), 6 Coupe (F13), 7 (F01, F02, F03, F04), X5 (E70), X6 (E71, E72) |
|---|---|
| Engines | 550 i; 650 i; 750 i, Li; xDrive 50 i; ActiveHybrid |
| Year of manufacture | 2006-2018 |
| Manufacturer article number (MPN) | 40631600 |
| OE part numbers | 11 25 7 576 475, 11 25 7 613 626, 7 576 475, 7 613 626 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
KOLBENSCHMIDT 40631600 . Bolt Head Diameter [mm]: 22 mm. Bolt Length [mm]: 60 mm. Component Number: 61267. Component Number: 61445. Component Number: 61604. Compression Height [mm]: 32,1 mm. Connecting Rod Design: 1. Cylinder Bore [mm]: 89 mm
- 1x Piston
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Tracked standard shipping.
- Standard delivery: 5–9 business days
- Order before 5pm — ships the next working day
- 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 Piston compatible with my car?
This Piston 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 KOLBENSCHMIDT Piston have?
This KOLBENSCHMIDT Piston has the following specifications: Length [mm]: 52,6 mm; Cylinder Bore [mm]: 89 mm; Bolt Head Diameter [mm]: 22 mm; Component Number: 61604; Component Number: 61445; Component Number: 61267. Check the full specifications table above for complete details.
What OE part numbers does this Piston replace?
This Piston replaces OE part numbers: 11 25 7 576 475, 11 25 7 613 626, 7 576 475, 7 613 626. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Piston cost?
This KOLBENSCHMIDT Piston is available for £300.99. Piston prices vary depending on brand, specifications, and vehicle compatibility. KOLBENSCHMIDT parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Piston?
Regular inspection of your Piston 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 Piston?
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 Piston fitted by a professional mechanic.
Can I use this part as a replacement for OE 11 25 7 576 475?
Yes, this KOLBENSCHMIDT Piston is a direct replacement for OE part number 11 25 7 576 475. 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 KOLBENSCHMIDT 40631600 the same as the KOLBENSCHMIDT 40027700?
No, while both are Piston parts, they are different products. The KOLBENSCHMIDT 40631600 has Length [mm]: 52,6 mm, Cylinder Bore [mm]: 89 mm, Bolt Head Diameter [mm]: 22 mm. The KOLBENSCHMIDT 40027700 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.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
