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Details
| Specification | Value |
|---|---|
| Brand | AS-PL |
| MPN | sd4004 |
| Quality | STANDARD LINE |
| Inner Diameter [mm] | 14.00 mm |
| Length 1 [mm] | 67 mm |
| Outer Diameter 1 [mm] | 52.50 mm |
| Outer Diameter 2 [mm] | 30.00 mm |
OE/OEM numbers (4)
Search by this OE number to find compatible parts
- LADA—2101-3708-620
- FIAT—4154293
- FIAT—4243124
- FIAT—4475122
About this product
The AS-PL Freewheel Gear Starter (SD4004) 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: Bronze, Quality: STANDARD LINE, Inner Diameter [mm]: Nylon, 00 mm, Rotation Direction: 0, Length 1 [mm]: 67 mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. This part supersedes original equipment references: 00-41-32, 0213, 1.01.0213.0, 1010397 and 57 more. Matching these numbers confirms a like-for-like replacement with no loss of function. AS-PL 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.
Suitable cars
Vehicle matches are curated from manufacturer data
Confirmed fits based on manufacturer data.Equivalent products (57)
Show all 57 OE numbers
Freewheel Gear Starter AS-PL SD4004 — compatible car models
| Manufacturer article number (MPN) | SD4004 |
|---|---|
| OE part numbers | 2101-3708-620, 4154293, 4243124, 4475122 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
AS-PL sd4004 Brand new AS-PL. Inner Diameter [mm]: 14,00 mm. Length 1 [mm]: 67 mm. Number of Teeth: 11. Outer Diameter 1 [mm]: 52,50 mm. Outer Diameter 2 [mm]: 30,00 mm. Quality: STANDARD LINE. Rotation Direction: 0
- 1x Freewheel Gear Starter
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 Freewheel Gear Starter compatible with my car?
Use the vehicle selector at the top of the page to check compatibility. Enter your car's make, model, and engine — we'll confirm whether this Freewheel Gear Starter fits. All fitment data is verified through TecDoc.
What specifications does this AS-PL Freewheel Gear Starter have?
This AS-PL Freewheel Gear Starter has the following specifications: Number of Teeth: 11; Quality: STANDARD LINE; Inner Diameter [mm]: 14,00 mm; Rotation Direction: 0; Length 1 [mm]: 67 mm; Outer Diameter 1 [mm]: 52,50 mm. Check the full specifications table above for complete details.
What OE part numbers does this Freewheel Gear Starter replace?
This Freewheel Gear Starter replaces OE part numbers: 2101-3708-620, 4154293, 4243124, 4475122. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Freewheel Gear Starter cost?
This AS-PL Freewheel Gear Starter is available for £15.99. Freewheel Gear Starter prices vary depending on brand, specifications, and vehicle compatibility. AS-PL parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Freewheel Gear Starter?
Regular inspection of your Freewheel Gear Starter 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 Freewheel Gear Starter?
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 Freewheel Gear Starter fitted by a professional mechanic.
Can I use this part as a replacement for OE 2101-3708-620?
Yes, this AS-PL Freewheel Gear Starter is a direct replacement for OE part number 2101-3708-620. 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 AS-PL SD4004 the same as the AS-PL SD0001?
No, while both are Freewheel Gear Starter parts, they are different products. The AS-PL SD4004 has Number of Teeth: 11, Quality: STANDARD LINE, Inner Diameter [mm]: 14,00 mm. The AS-PL SD0001 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.
