Champion Copper Plus Spark Plugs 404 — 0.040" Gap for Harley FXST

Upgrade your Harley-Davidson FXST with Champion Copper Plus spark plugs, part number 404, engineered with a.040-inch electrode gap for reliable spark delivery and smooth engine operation across riding conditions.

• Copper core for excellent electrical conduction and efficient heat dissipation
• .040-inch electrode gap for consistent ignition performance
• Made in the USA with high-quality materials
• OEM cross-reference 32342-04 for compatibility with factory specifications
• Includes a set of four spark plugs
• Fits Harley Davidson FXST models from 1984 through 1998

These plugs are designed to align with Harley FXST OEM specifications and provide durable, dependable performance in the ignition system. For optimal ignition system integration, consider accessory items such as the V-Fire Single Fire Electronic Ignition Distributor with Coil, Cam Chest Circuit Breaker Gear Stud Kit, and Spark Plug Hole Thread Chaser Tool to support a seamless upgrade process.

Copper plus style spark plugs have a.040 gap.

Upgrade your Harley Davidson FXST with the Champion Copper Plus Spark Plugs, part number 404, designed for optimal ignition performance and durability. These spark plugs feature a.040-inch gap, ensuring reliable spark delivery and smooth engine operation across multiple riding conditions. Made in the USA, these plugs meet strict quality standards and are compatible with OEM specifications, including the cross-reference number 32342-04. Perfect for vintage Harley Davidson models, these plugs are a crucial component for maintaining engine efficiency and longevity.

Constructed by Champion, a trusted name in spark plug manufacturing, the Copper Plus series is known for its superior conductivity and heat dissipation. The copper core provides excellent electrical conduction, leading to better combustion and improved throttle response. Each set contains four spark plugs, making it convenient for comprehensive engine maintenance or replacement. Their precise fit and high-quality materials ensure longevity and dependable performance on Harley Davidson FXST models from 1984 through 1993.

For optimal ignition system integration, consider accessory items such as the V-Fire Single Fire Electronic Ignition Distributor with Coil, Cam Chest Circuit Breaker Gear Stud Kit, and Spark Plug Hole Thread Chaser Tool. These accessories complement the spark plugs, ensuring a seamless upgrade process and enhanced engine performance.

Features:

• Copper core for excellent electrical conduction and heat dissipation

• .040-inch electrode gap for reliable spark and smooth engine operation

• Made in the USA with high-quality materials

• OEM cross-reference 32342-04 for compatibility

• Includes a set of four spark plugs for comprehensive replacement

Fitment:
Harley Davidson FL 1975
Harley Davidson FL 1976
Harley Davidson FL 1977
Harley Davidson FL 1978
Harley Davidson FL 1979
Harley Davidson FL 1980
Harley Davidson FL 1981
Harley Davidson FLST 1986
Harley Davidson FLST 1987
Harley Davidson FLST 1988
Harley Davidson FLST 1989
Harley Davidson FLST 1990
Harley Davidson FLST 1991
Harley Davidson FLST 1992
Harley Davidson FLST 1993
Harley Davidson FLST 1994
Harley Davidson FLST 1995
Harley Davidson FLST 1996
Harley Davidson FLST 1997
Harley Davidson FLST 1998
Harley Davidson FLT 1984
Harley Davidson FLT 1985
Harley Davidson FLT 1986
Harley Davidson FLT 1987
Harley Davidson FLT 1988
Harley Davidson FLT 1989
Harley Davidson FLT 1990
Harley Davidson FLT 1991
Harley Davidson FLT 1992
Harley Davidson FLT 1993
Harley Davidson FLT 1994
Harley Davidson FLT 1995
Harley Davidson FLT 1996
Harley Davidson FLT 1997
Harley Davidson FLT 1998
Harley Davidson FX 1975
Harley Davidson FX 1976
Harley Davidson FX 1977
Harley Davidson FX 1978
Harley Davidson FX 1979
Harley Davidson FX 1980
Harley Davidson FX 1981
Harley Davidson FXD 1991
Harley Davidson FXD 1992
Harley Davidson FXD 1993
Harley Davidson FXD 1994
Harley Davidson FXR 1984
Harley Davidson FXR 1985
Harley Davidson FXR 1986
Harley Davidson FXR 1987
Harley Davidson FXR 1988
Harley Davidson FXR 1989
Harley Davidson FXR 1990
Harley Davidson FXR 1991
Harley Davidson FXR 1992
Harley Davidson FXR 1993
Harley Davidson FXR 1994
Harley Davidson FXS 1975
Harley Davidson FXS 1976
Harley Davidson FXS 1977
Harley Davidson FXS 1978
Harley Davidson FXS 1979
Harley Davidson FXS 1980
Harley Davidson FXST 1984
Harley Davidson FXST 1985
Harley Davidson FXST 1986
Harley Davidson FXST 1987
Harley Davidson FXST 1988
Harley Davidson FXST 1989
Harley Davidson FXST 1990
Harley Davidson FXST 1991
Harley Davidson FXST 1992
Harley Davidson FXST 1993
Harley Davidson FXST 1994
Harley Davidson FXST 1995
Harley Davidson FXST 1996
Harley Davidson FXST 1997
Harley Davidson FXST 1998