Product Details
Description
Malossi, Piston (47.0mm,12mm wrist pin); Piaggio,Honda,Kymco is a replacement piston assembly for compatible 139QMB scooter engine repairs or rebuilds.
Key Details
- For 317083, 3111667
Replacement Part Details
Use this part when the original component is worn, damaged, missing, or no longer working correctly. Many scooter parts can look similar but use different sizes, plugs, brackets, thread patterns, or mounting styles, so careful comparison before purchase is recommended.
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Code: 139QMB
- Fits Models / Common Applications: Kymco and other compatible models may apply.
Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.
Common Fitment Questions
Q: Will this fit a 139QMB engine?
A: This SKU is listed as compatible with 139QMB engine-code fitment. Always compare your original part and scooter details before ordering.
Q: Will this fit a Kymco?
A: This SKU is listed with Kymco model fitment where the scooter also matches the listed engine or fitment notes.
Additional information
| Weight | 0.5 lbs |
|---|---|
| Dimensions | 4.5 × 4 × 4 in |
12mm piston pin
* 2311783B piston pin 12 x 38mm Scooter 65-70ccm
* 364,450 piston pin retainer 12mm C (1)
354,501 * Piston ring 47,0 mm x 1.5 mm kit-complete (2 pieces)
347036 is for spare parts
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Not legal for use in California on pollution controlled vehicles. Check local laws before installing.





