Description
Intake Manifold O-ring for 50cc 4-Stroke Engines
This Intake Manifold O-ring is designed for 50cc, 4-stroke engines, specifically the 139QMB model. It plays a critical role in sealing the intake manifold, ensuring efficient engine performance. As one of the scooter gaskets & seals, it serves as a reliable replacement for worn or damaged parts. If you're experiencing air leaks or performance issues, it may be time to replace this O-ring.
Construction and Functionality
Manufactured to precise dimensions, this O-ring guarantees a tight fit, preventing air leaks that can compromise engine performance. The inner diameter measures 21mm, while the outer diameter is 25mm, with a thickness of 1.75mm. Its design allows for straightforward installation, making it a manageable task for those familiar with basic scooter maintenance.
When to Replace Your O-ring
O-rings can wear out over time due to exposure to heat and engine vibrations. If you notice a decrease in performance or detect air leaks around the intake manifold, it's advisable to inspect and replace the O-ring. Regular checks can help maintain your scooter's efficiency and longevity.
Specifications
- Size: 21mm inner diameter, 25mm outer diameter, 1.75mm thickness
- Fits: 139QMB-based engines
- OEM Part Number: 139QMB, 1P39QMB, 1P39QMA-2
Fitment
This O-ring is compatible with several 50cc and 80cc engines, specifically the 139QMB series. It fits the following engine codes:
- 139QMA
- 1P39QMB
- 1P39QMA-2
- YN139QMB
- JJ1P39QMB
- 139FMA-2
- BD1P39QMB
- BN139QMB
- 147QMD
Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.
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