Product Details
Description
101 Octane Bolt Set for QMB139 50cc Engines
Key Details
- 155-3
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 Size: 50cc, QMB139
- Engine Code: QMB139
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 QMB139 engine?
A: This SKU is listed as compatible with QMB139 engine-code fitment. Always compare your original part and scooter details before ordering.
Q: Is this for 50cc scooters?
A: This SKU is listed with 50cc engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | 2.25 lbs |
|---|---|
| Dimensions | 6 × 8 × 2 in |
101 Octane complete engine hardware set for QMB139 (GY6) 50cc/49cc scooters — a comprehensive flat-lay assortment of hex-head bolts, socket-head bolts, long cylinder studs, short flange bolts, nuts, washers, oil drain plug (large hex), circlip, and assorted small screws. Everything needed for a full engine rebuild or refresh in one kit.Â
Key Features:
- Comprehensive bolt kit for QMB139 GY6 50cc engine rebuilds — covers CVT cover, cylinder studs, oil drain plug, and more
- Includes hex-head bolts, socket-head bolts, long cylinder studs, flange bolts, nuts, washers, oil drain plug, circlip, and small screws
- Handy all-in-one hardware set for engine disassembly and reassembly
- SKU: 155-3 | MPN: BT13886 | Made in China by 101 Octane
- Brand: 101 Octane
- SKU: 155-3
- Application: QMB139 / GY6 50cc / 49cc 4-stroke engines
- Contents: Assorted engine bolts, studs, nuts, washers, oil drain plug, circlip, small screws
- Weight: 2.25 lbs
- Made in China
Fits QMB139 / GY6 50cc 4-stroke scooter engines. Compatible with most Chinese-made 50cc scooters, go-karts, and ATVs running the QMB139 engine architecture.
Note on hardware color: Kits ship in either all-silver zinc-plated hardware or a combination of gold zinc and black hardware, depending on manufacturer availability. Color selection is not available — see both images for examples of each variant.





