Product Details
Description
Malossi, Piston (47.0mm); Suzuki, Derbi, Morini is a replacement piston assembly for compatible 139QMB scooter engine repairs or rebuilds.
Key Details
- For 3111143, 3111146
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 |
10mm piston pin
Component of 346,445
* 237578B piston pin 10 x 38mm Scooter 50 Minarelli, Morini
* 366,941 piston pin retainer 10mm G (1)
* 354,501 * Piston ring 47,0 mm x 1.5 mm kit-complete (2 pieces)
346,445 is for spare parts
* 3111146 cylinder head castings Derbi Scooter 65ccm (water-cooled until 2003)
* 3111143 cylinder head castings Derbi Scooter 65ccm aircooled
* 318,723 cylinder head castings Scooter 65ccm Morini, Suzuki Air-cooled
Not legal for use in California on pollution controlled vehicles. Check local laws before installing.





