Product Details
Description
Piston (57.2, 1st Oversize); VS5 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.
Related Categories
Additional information
| Weight | 0.5 lbs |
|---|---|
| Dimensions | 4.5 × 4 × 4 in |
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 |





