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Details
| Specification | Value |
|---|---|
| Brand | AS-PL |
| MPN | sd4009p |
| Quality | PREMIUM LINE |
| Inner Diameter [mm] | 11.50 mm |
| Length 1 [mm] | 64 mm |
| Outer Diameter 1 [mm] | 46.30 mm |
| Outer Diameter 2 [mm] | 25.50 mm |
OE numbers (1)
Search by this OE number to find compatible parts
- FIAT—9939915
About this product
AS-PL Freewheel Gear Starter (SD4009P) is manufactured to OEM tolerances, ensuring a direct-fit replacement that restores your vehicle to factory specification without any modification. Technical specifications — Number of Teeth: Stainless Steel, Quality: PREMIUM LINE, Inner Diameter [mm]: Bronze, 50 mm, Rotation Direction: 0, Length 1 [mm]: 64 mm — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. This part supersedes original equipment references: 01-41-93, 063101003010, 063221834010, 063221890010 and 47 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 with tracked delivery and a 14-day money-back guarantee with hassle-free returns.
Suitable cars
Vehicle matches are curated from manufacturer data
Confirmed fits based on manufacturer data.Equivalent products (50)
Show all 50 OE numbers
Freewheel Gear Starter AS-PL SD4009P — compatible car models
| Manufacturer article number (MPN) | SD4009P |
|---|---|
| OE part numbers | 9939915 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
AS-PL sd4009p Brand new AS-PL. Inner Diameter [mm]: 11,50 mm. Length 1 [mm]: 64 mm. Number of Teeth: 9. Outer Diameter 1 [mm]: 46,30 mm. Outer Diameter 2 [mm]: 25,50 mm. Quality: PREMIUM LINE. Rotation Direction: 0
- 1x Freewheel Gear Starter
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Tracked standard shipping.
- Standard delivery: 4–8 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 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: 9; Quality: PREMIUM LINE; Inner Diameter [mm]: 11,50 mm; Rotation Direction: 0; Length 1 [mm]: 64 mm; Outer Diameter 1 [mm]: 46,30 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: 9939915. 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 9939915?
Yes, this AS-PL Freewheel Gear Starter is a direct replacement for OE part number 9939915. 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 SD4009P the same as the AS-PL SD0001?
No, while both are Freewheel Gear Starter parts, they are different products. The AS-PL SD4009P has Number of Teeth: 9, Quality: PREMIUM LINE, Inner Diameter [mm]: 11,50 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.
