- Shop with confidence: competitive prices, exclusive deals, and delivery perks.
- Need it quickly? We dispatch fast-moving parts daily. Check delivery options.
- Swap or return items within the standard return period with a simple process.
- Questions about fitment or orders? Our support team is ready to help.
Similar products
Customers also bought
Details
| Specification | Value |
|---|---|
| Brand | FEBI BILSTEIN |
| Thickness [mm] | 16.7 mm |
| Weight [kg] | 0,142 kg |
| Inner Diameter [mm] | 28 mm |
| Outer Diameter [mm] | 59.5 mm |
OE/OEM numbers (2)
Search by this OE number to find compatible parts
- SMART—660 052 01 03
- SMART—A660 052 01 03
Where this part fits
Original-fit position for OE 6600520103. The red ring marks where this part installs on the vehicle.
About this product
The FEBI BILSTEIN Sprocket Crankshaft (25439) 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: Synthetic, Thickness [mm]: Silicone, Ceramic mm, Weight [kg]: 0, 142 kg, Inner Diameter [mm]: 28 mm, Outer Diameter [mm]: 59, Rubber mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit SMART 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: 03.89022K, 03.89028K, 03.89029K, 03.89046K and 78 more. Matching these numbers confirms a like-for-like replacement with no loss of function. FEBI BILSTEIN 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 FEBI BILSTEIN
febi bilstein, founded in 1844 in Ennepetal, Germany, is one of the oldest and most comprehensive automotive parts suppliers in the independent aftermarket. febi bilstein offers over 40,000 parts spanning steering, suspension, engine, braking, cooling, and electrical systems. Certified to IATF 16949 and supplying OE-quality components, febi bilstein products undergo rigorous testing to match original equipment performance. With nearly 180 years of German engineering tradition, febi bilstein is the go-to brand for reliable, competitively priced replacement parts.
Suitable cars
Equivalent products (83)
Show all 83 OE numbers
Sprocket Crankshaft FEBI BILSTEIN 25439 — compatible car models
| Car models | SMART: CABRIO (450), CITY-COUPE (450), FORTWO Cabrio (450), FORTWO Cabrio (451), FORTWO Coupe (450), FORTWO Coupe (451) |
|---|---|
| Engines | 0.8 CDI (S1OLC1, 450.401, 450.402, 450.403, 450.400); 0.8 CDI (S1CLC1, 450.300, 450.301, 450.302, 450.303,...; 0.8 CDI (450.401, 450.402, 450.403, 450.400); 0.8 CDi (451.400); 0.8 CDI (450.300, 450.301, 450.302, 450.303, 450.306); 0.8 CDi (451.300) |
| Year of manufacture | 1998-2007 |
| Manufacturer article number (MPN) | 25439 |
| OE part numbers | 660 052 01 03, A660 052 01 03 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
FEBI BILSTEIN 25439 . Engine Timing: 4. Inner Diameter [mm]: 28 mm. Number of Teeth: 19. Outer Diameter [mm]: 59,5 mm. Thickness [mm]: 16,7 mm. Weight [kg]: 0,142 kg
- 1x Sprocket Crankshaft
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 Sprocket Crankshaft compatible with my car?
This Sprocket Crankshaft fits SMART 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 FEBI BILSTEIN Sprocket Crankshaft have?
This FEBI BILSTEIN Sprocket Crankshaft has the following specifications: Number of Teeth: 19; Thickness [mm]: 16,7 mm; Weight [kg]: 0,142 kg; Inner Diameter [mm]: 28 mm; Outer Diameter [mm]: 59,5 mm; Engine Timing: 4. Check the full specifications table above for complete details.
What OE part numbers does this Sprocket Crankshaft replace?
This Sprocket Crankshaft replaces OE part numbers: 660 052 01 03, A660 052 01 03. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Sprocket Crankshaft cost?
This FEBI BILSTEIN Sprocket Crankshaft is available for £21.99. Sprocket Crankshaft prices vary depending on brand, specifications, and vehicle compatibility. FEBI BILSTEIN parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Sprocket Crankshaft?
Regular inspection of your Sprocket Crankshaft 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 Sprocket Crankshaft?
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 Sprocket Crankshaft fitted by a professional mechanic.
Can I use this part as a replacement for OE 660 052 01 03?
Yes, this FEBI BILSTEIN Sprocket Crankshaft is a direct replacement for OE part number 660 052 01 03. 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 FEBI BILSTEIN 25439 the same as the FEBI BILSTEIN 103613?
No, while both are Sprocket Crankshaft parts, they are different products. The FEBI BILSTEIN 25439 has Number of Teeth: 19, Thickness [mm]: 16,7 mm, Weight [kg]: 0,142 kg. The FEBI BILSTEIN 103613 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.
