Universal Parts Adjustment Screw and Nut Set
Universal Parts Adjustment Screw and Nut Set
$13.77
Out of stock
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Product Details
Description
Universal Parts Adjustment Screw and Nut Set
Key Details
- 151-102
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Fitment Notes: Universal Fit
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.
Additional information
| Weight | 0.3 lbs |
|---|---|
| Dimensions | 4 × 4 × 1 in |
Keep your GY6 or QMB139 engine running with precise valve clearance using this replacement Rocker Arm Valve Adjustment Screw and Lock Nut Set. A worn or stripped adjustment screw is a common cause of valve noise and poor idle — this direct-fit set of two restores proper valve lash adjustment quickly and affordably.
Key Features
- Set of 2 screws with lock nuts — enough for both intake and exhaust valves
- Fine M5×0.50 thread pitch for precise valve clearance adjustment
- Direct replacement for OEM rocker arm adjuster on QMB139 and GY6 engines
- Compatible with 50cc to 150cc 4-stroke single-cylinder engines
- Quantity: Set of 2
- Screw Length: 20mm overall
- Thread Size: M5×0.50
- Application: 50cc-150cc 4-stroke QMB139 / GY6 engines
Fits most 50cc 4-stroke scooters and ATVs using the QMB139 engine platform, including:
| Brand | Notes |
|---|---|
| Baja | SC50 |
| Kymco | QMB139-based 50cc models |
| Panterra | 50cc scooters |
| Qingqi / Roketa / SUNL / Tank | 50cc QMB139 models |
| Various Chinese 50cc | Any QMB139 / GY6 50cc engine |
Tip: Always check valve clearance with a feeler gauge after adjustment. Intake and exhaust specs vary by engine — consult your service manual.
