fits model: Wr400, Wr, 400. make: Yamaha. year: 1999.

( Brand: Keihin ), ( Manufacturer Part Number: 1609-809-2100 ), ( Part Type: Valve Seal Carburetor Throttle Plate )
The Keihin FCR carburetor throttle valve plate seal (1609-809-2100) is a crucial component for maintaining the optimal performance of your 1999 Yamaha WR400 or WR400F. This seal is specifically designed to ensure a tight and leak-free connection between the throttle valve plate and the carburetor body.
This seal is made from high-quality materials, ensuring it can withstand the harsh conditions that a motorcycle's engine can subject it to. It's resistant to heat, fuel, and other engine fluids, ensuring a long lifespan and reliable performance.
The seal features a precise fit, ensuring a snug seal that prevents the escape of air or fuel, which can lead to performance issues. It's also easy to install, making it a straightforward and stress-free replacement for DIY enthusiasts.
In summary, the Keihin FCR carburetor throttle valve plate seal (1609-809-2100) is an essential part for your 1999 Yamaha WR400 or WR400F. It's designed to ensure a tight seal, improve performance, and provide long-lasting reliability.
Pros of Buying Keihin FCR Carburetor Throttle Valve Plate Seal (1609-809-2100) for 1999 Yamaha WR400:1. OEM Part: This seal is a direct replacement part from Keihin, the original manufacturer of the carburetor. This ensures compatibility and a perfect fit.
2. Improved Performance: A faulty or worn-out throttle valve plate seal can affect the engine's performance. Replacing it with a new one can improve throttle response and engine efficiency.
3. Durability: Keihin is known for its high-quality parts, and this seal is no exception. It should last longer than a generic aftermarket part, reducing the need for frequent replacements.
Cons of Buying Keihin FCR Carburetor Throttle Valve Plate Seal (1609-809-2100) for 1999 Yamaha WR400:1. Cost: Original equipment manufacturer (OEM) parts are often more expensive than aftermarket parts. This seal may be more expensive than some aftermarket alternatives.
2. Availability: Depending on your location, the seal may not be readily available in local auto parts stores. You may need to order it online and wait for delivery.
Recommendation:If you value the peace of mind that comes with using an OEM part and are willing to pay a premium for it, the Keihin FCR Carburetor Throttle Valve Plate Seal (1609-809-2100) is a solid choice. Its durability and potential for improved performance can be worth the investment for some riders. However, if cost and convenience are your main concerns, you may want to consider an aftermarket alternative. As always, it's important to ensure that any part you install is compatible with your specific motorcycle model and year.
The half moon sections that oem throttle plates have are crucial, because they allow vacuum to be released through ports co-respond them on inner walls of your carburetors. Made by Keihin using highest standards that ensure only the best quality for exact fit and proper function in all conditions. The plate stamped with m stamping will not work for fcr-racing model's, see my other listings that slide. Will also cause inconsistent idling when leaking or worn.
I highly recommended a new vacuum plate o-ring when replacing the slide, if slide went bad its because was not maintained and extra movement caused damage. Corners have been cut in the design causing more grinding on inner walls by not allowing vacuum to be released through top. If you remove the top cap of your carburetor will see what I am referring.
The lower tapers on slide that tuck in between body and venture ring at bottom are also not there completely flat design of 60 selling. 1x vacuum release plate l for Keihin fcr racing carburetors will fit all 35mm - 41mm on dirt or street bikes. They will ruin the inner wall of carburetor due to poor design. The slides were designed in such way by Keihin for a reason and I have explained above why.
Billet aluminum is way stronger than cast that the carb made from and will take a beating. Something to keep in mind before buying parts.
The vacuum release plate is loose on flat slide assembly that serves as sort of a valve to help regulate engine vacuum, particularly when starting.