Universal Parts Carburetor Idle Screw Spring
Universal Parts Carburetor Idle Screw Spring
$12.24
10 in stock
*Note: Free shipping to U.S. mainland (excludes AK, HI, and territories)
Orders placed by 1pm EST on weekdays ship the same day.
Product Details
Description
Universal Carburetor Idle Spring: 50cc QMB139
Key Details
- 151-199
Specifications
- Length: 10mm Baja SC50, Boreem (BMS), Kymco, Panterra, QMB139 50cc/49cc , Roketa, SUNL, Schwinn, X-Treme
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: 49cc, 50cc, QMB139
- Engine Code: QMB139
- Fits Models / Common Applications: Baja and other compatible models may apply.
- 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.
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: Will this fit a Baja?
A: This SKU is listed with Baja model fitment where the scooter also matches the listed engine or fitment notes.
Q: Is this for 49cc scooters?
A: This SKU is listed with 49cc engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | 0.3 lbs |
|---|---|
| Dimensions | 4 × 4 × 1 in |
Stop chasing your idle. This Universal Parts Carburetor Idle Screw Spring is the small compression spring that holds your air/fuel mixture screw in position against engine vibration. When this spring weakens or corrodes, the idle screw creeps out of adjustment, causing stalling, surging, and constant re-tuning. At $1.40 it's one of the easiest fixes on a QMB139-carbureted scooter.
Key Features
- Precision Tension: Engineered to hold screw position under high-RPM vibration without over-tensioning.
- Zinc-Plated Finish: Corrosion-resistant coating prevents binding inside the carburetor body.
- Correct 10mm Length: Sized specifically for QMB139 and GY6 50cc carburetor idle/air screw ports.
- Broad Compatibility: Fits most Chinese 50cc 4-stroke scooter carburetors.
- SKU: 151-199
- Length: ~10mm
- Material: Zinc-plated steel
- Application: Carburetor idle / air adjustment screw return spring
- Engine Type: 50cc 4-stroke (QMB139 / GY6)
| Brand | Popular Models |
|---|---|
| Generic GY6 / QMB139 | All 50cc 4-stroke QMB139 carbureted engines |
| Baja | SC50, BE50 |
| Kymco | Agility 50, People 50 |
| TaoTao / Bintelli / Peace / Roketa | Most 50cc 4-stroke scooter models |
| Genuine Buddy 50 / RoughHouse 50 | QMB139-carbureted variants |
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