AUTOLITE 4173 Spark Plug, Copper

The AUTOLITE 4173 spark plug is designed with a full copper core electrode to support consistent performance across operating conditions. Its copper-glass seal bonds the insulator, terminal post, and center electrode together, helping provide the required voltage at the spark gap while maintaining a gas-tight seal.

A multi-rib insulator helps reduce the risk of flash-over, while the one-piece terminal post adds strength. The integrated resistor is designed to reduce radio frequency interference (RFI) and electrode erosion. A cold-formed steel shell features precision-rolled threads for dependable installation.

Before purchase, verify all cross-reference listings to confirm the AUTOLITE 4173 spark plug is appropriate for your application.

Features:

• Copper-glass seal bonds the insulator, terminal post, and center electrode together for the required voltage at the spark gap and a gas-tight seal.
• Multi-rib insulator helps reduce the danger of flash-over.
• One-piece terminal post adds strength.
• Resistor helps reduce radio frequency interference (RFI) and electrode erosion.
• Cold-formed steel shell has precision-rolled threads.
• Full copper core electrode supports performance in all conditions.
• Verify all cross-reference listings before purchase.

Fitment:
Honda ATC110 1979
Honda ATC110 1980
Honda ATC110 1981
Honda ATC110 1982
Honda ATC110 1983
Honda ATC110 1984
Honda ATC110 1985
Honda ATC90 1971
Honda ATC90 1972
Honda ATC90 1973
Honda ATC90 1974
Honda ATC90 1975
Honda ATC90 1976
Honda ATC90 1977
Honda ATC90 1978
Honda CA160 1966
Honda CL160 1966
Honda CL175 Scrambler 1968
Honda CL175 Scrambler 1969
Honda CL175 Scrambler 1970
Honda CL175 Scrambler 1971
Honda CL175 Scrambler 1972
Honda CL72 1962
Honda CL77 1966
Honda CT90 1969
Honda CT90 1970
Honda CT90 1971
Honda CT90 1972
Honda CT90 1973
Honda CT90 1974
Honda CT90 1975
Honda CT90 1976
Honda CT90 1977
Honda CT90 1978
Honda CT90 1979
Honda SL175 1970
Honda SL175 1971
Honda SL90 1969
Honda ST90 1973
Honda ST90 1974
Honda ST90 1975