fits model: Wr400f. make: Yamaha. year: 1998–2000.

( Brand: Ngk Atv Motorcycle Pwc Marine Snowmobile Parts ), ( Manufacturer Part Number: SX6394 ), ( Part Type: Spark Cv Plug ), ( Item Length: 3.310 )
The Ngk ATV PWC Marine SX6394 4-pack Spark Plug Kit is specifically designed for Yamaha WR400F models from 1998 to 2000, as well as other engines with a displacement of 399cc or 24ci. This set includes four high-performance Iridium IX spark plugs, which are renowned for their superior ignitability and long service life.
The Iridium IX material used in these spark plugs provides excellent durability and resistance to fouling, ensuring reliable performance even in extreme conditions. The center electrode is made of platinum-iridium alloy, which provides a fine, stable spark for quicker ignition and more complete combustion.
The Ngk ATV PWC Marine SX6394 spark plugs feature a tapered ground electrode, which helps to reduce fouling and ensure a consistent spark. The insulator nose is also designed to reduce spark plug fouling, while the insulator is made of high-quality ceramic for excellent heat resistance and durability.
The spark plugs in this kit are designed with a heat range of NGK LFR5E, which provides optimal performance for engines with high compression ratios and demanding operating conditions. This ensures that the engine runs smoothly and efficiently, while also reducing the risk of engine damage due to overheating.
Overall, the Ngk ATV PWC Marine SX6394 4-pack Spark Plug Kit is a high-quality, reliable choice for any Yamaha WR400F or other compatible engine. With their long service life, excellent durability, and superior ignitability, these spark plugs are sure to provide reliable performance and help keep your engine running smoothly for years to come.
Pros of buying a Ngk ATV PWC Marine SX6394 4-piece kit set for Yamaha WR400F:1. High-quality spark plugs: Ngk is a well-known and reputable brand in the automotive industry, known for manufacturing high-performance spark plugs.
2. Fit and compatibility: These spark plugs are specifically designed for Yamaha WR400F engines with a 399cc displacement and a 24ci engine size.
3. Iridium X type: The Iridium X spark plugs are known for their durability, longevity, and excellent spark performance, which can improve engine performance and fuel efficiency.
4. Kit set: The 4-piece kit set includes all the necessary spark plugs for your engine, saving you time and money compared to buying individual spark plugs.
Cons of buying a Ngk ATV PWC Marine SX6394 4-piece kit set for Yamaha WR400F:1. Price: The price of the Ngk spark plugs is higher than some other brands, which may be a concern for budget-conscious consumers.
2. Installation: While the spark plugs are easy to install, it may require some mechanical knowledge or the assistance of a professional mechanic.
3. Availability: Depending on your location, it may be challenging to find Ngk spark plugs in local shops, and you may need to order them online.
Conclusion:The Ngk ATV PWC Marine SX6394 4-piece kit set for Yamaha WR400F is a high-quality spark plug option that can improve engine performance and fuel efficiency. While the price may be higher than some other brands, the durability and longevity of the Iridium X spark plugs can make it a worthwhile investment. If you are comfortable with the installation process or have access to a professional mechanic, then this spark plug set is a great option for your Yamaha WR400F.
Recommendation:If you are looking for a high-quality spark plug option for your Yamaha WR400F, then I would recommend the Ngk ATV PWC Marine SX6394 4-piece kit set. It is a reliable and durable option that can help improve your engine's performance and fuel efficiency. Keep in mind that while the price may be higher than some other brands, the longevity and performance of the Iridium X spark plugs can make it a worthwhile investment.
4pcs 98-00 Yamaha WR400F NGK Iridium IX Spark Plugs 399cc 24ci Kit Set Engin cv: Status: In Stock.