NEW Yamaha 2-Stroke Exhaust O-Ring Seal 2001-2023
Part Number: 5MV-14642-00-00 (also 5MV1464200)
Official Name: Seal, Exhaust
Condition: New / Genuine OEM
Placement: Exhaust Pipe / Cylinder Manifold Interface
Official Name: Seal, Exhaust
Condition: New / Genuine OEM
Placement: Exhaust Pipe / Cylinder Manifold Interface
Product Overview
This is a brand new, genuine Yamaha factory replacement exhaust seal. On high-performance 2-stroke engines like the YZ125, this seal is a critical maintenance item. It sits between the expansion chamber (pipe) and the cylinder exhaust port. Over time, the extreme heat and constant vibration of a 2-stroke engine cause the original seal to flatten, harden, or crack.
A failing seal leads to messy "spooge" leaks down the front of your engine case and, more importantly, creates an exhaust leak that can disrupt backpressure and lean out your air-fuel mixture. Replacing it with this genuine Yamaha part restores a factory-tight seal for maximum engine performance.
Why Choose Genuine Yamaha?
2-stroke exhaust temperatures are extreme. Aftermarket "universal" seals often use rubber compounds that melt or become brittle after just a few rides. This genuine Yamaha seal is manufactured from a high-temp, chemical-resistant composite designed to withstand the unique rigors of a premix-fueled engine while maintaining its shape under high vibration.
Major Vehicle Compatibility
This seal is the factory-correct fitment for the following Yamaha 2-stroke models:
- Yamaha YZ125 / YZ125X: Fits most models from 2001 through 2024.
- Yamaha YZ85 / YZ85LW: Fits various years (Check your specific VIN for early 2000s models).
- Yamaha YZ125 Monster Energy Edition: 2021–2024.
Technical Specifications
- Material: High-temperature resistant composite/rubber.
- Function: Prevents exhaust gas and unburnt oil (spooge) from leaking at the manifold.
- Origin: Made in Japan.
- Quantity: 1 Seal included per purchase.
selling as pictured.
more than welcome to pick up at shop in butler pa & save shipping.
030626 jy