Product Details
Description
Asso, Piston (47.6, 3rd Oversize); V9A Small Pin is a replacement piston assembly for compatible 139QMB scooter engine repairs or rebuilds.
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
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.
Additional information
| Weight | 0.5 lbs |
|---|---|
| Dimensions | 4.5 × 4 × 4 in |
This Mec Eur piston fits vintage smallframe Vespa 90 (V9A) scooters.Â
- Cylinder: 47.6 mm boreÂ
- 14 mm wrist pin
- Alloy piston
- Piston rings
- Circlips
About Mec Eur:Â Meccanica Europea's brand is synonymous of know-how and tradition. Established after World War II, Mec.Eur. has an enormous rage of spare parts and accessories, both for the last and vintage models, for vehicles on two wheels or three wheels, and for a whole range of Piaggio-Gilera and Lambretta.
Made in Italy





