Blue Line
Blue Line Vacuum Fuel Petcock M14x1.00 - GY6, 139QMB
Description
This Blue Line vacuum fuel petcock restores automatic fuel delivery on compatible CSC, GY6 and 139QMB scooters with high-mounted tail-section fuel tanks. Engine vacuum opens the valve while the engine runs, and the valve closes when vacuum stops to shut off fuel flow at rest. Its M14x1.00 tank connection, 5mm fuel outlet and integrated filter tube make it a practical replacement when your original valve no longer operates correctly.
Key Features
- Automatic vacuum operation: Opens with engine vacuum and closes when vacuum stops, without a manual ON/OFF/RES lever.
- M14x1.00 tank connection: Matches tanks using this exact thread diameter and pitch.
- 5mm fuel outlet: Barbed connection for a correctly sized fuel hose.
- Integrated filter tube: 62mm inlet filter helps screen debris before fuel reaches the carburetor.
- Separate vacuum connection: Dedicated hose nipple connects to the engine's vacuum supply.
Technical Specifications
- Brand: Blue Line
- Part number: 1100-1417
- Part type: Vacuum-operated fuel petcock
- Nut thread: M14x1.00
- Fuel outlet diameter: 5mm
- Filter tube length: 62mm
- Operation: Automatic, engine-vacuum controlled
- Quantity: One petcock with integrated filter
Compatibility
| Make / platform | Application |
|---|---|
| Chicago Scooter Company | Bella Classic 50, Nitro Sport 50 and Pug 50 |
| GY6 | Compatible 125/150cc scooters, including 157QMJ-based applications |
| 139QMB / QMB139 | Compatible Chinese 50cc scooters with M14x1.00 thread fitting on fuel tank - check before ordering. Many are M16. |
Does not fit the Chicago Scooter Company go.
Check thread diameter and pitch before ordering. Scooters use several different fuel-tank fittings, including M14x1.00, M16x1.5 and M16x1.25. This petcock fits M14x1.00 only; the M16 fittings are not interchangeable with it. Match the tank thread, hose connections, valve layout and filter clearance to your original part. Engine family or model name alone does not establish fitment. This petcock does not fit Genuine Scooter Company models, which use a different thread pitch.
Compare your existing petcock with the product image before purchase. Once fuel has passed through this part, it is non-returnable.
Product Diagrams
Features
Specifications
Brand: Blue Line; Part number: 1100-1417; Type: Vacuum-operated fuel petcock; Tank thread: M14x1.00; Nut inner diameter: 13mm; Fuel outlet diameter: 5mm; Filter tube length: 62mm; Operation: Automatic engine-vacuum controlled; Quantity: One petcock with integrated filter
Model Fitments
CSC Bella Classic 50, Nitro Sport 50, Pug 50; compatible GY6 125/150cc including 157QMJ and 139QMB/QMB139 50cc Chinese scooters with M14x1.00 tank thread, matching hose connections and adequate filter clearance; check thread diameter and pitch before ordering; M16x1.5 and M16x1.25 fittings are not interchangeable; does not fit CSC go.; excludes Genuine Scooter Company models
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Same day shipping for orders placed before 2PM (CST) M-F
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30-day return period on eligible items
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Flat-rate shipping for orders shipped to the 48 Contiguous United States.
