Autolite Spark Plug P/N:4194

Fire every cylinder with a dependable spark from the Autolite Spark Plug 4194. A spark plug supplies the high-voltage spark that ignites the compressed air-fuel mixture in the combustion chamber, and this one installs as a direct-fit replacement across a broad list of applications — from the 2008 Arctic Cat 50 2X4 and 2002-2004 Arctic Cat 90 2X4 to classic 1950-1953 Aston Martin DB2, 1946-1949 Bristol 400, and 1949-1951 Frazer Nash Fast Roadster models, plus many Honda motorcycles and ATVs and Can-Am and E-Ton machines.

• Core job: ignites the compressed air-fuel mixture to fire the cylinder on each combustion cycle.
• Wide coverage: listed for 153 powersports, motorcycle, and classic-car applications.
• Direct-fit replacement: for the specific years, makes, and models on the Buyer's Guide.

Over time, spark plugs wear and foul. If a worn or fouled plug is the cause, signs it may need replacing include rough idle, misfires, hard starting, hesitation, or reduced fuel economy — diagnose the cause before replacing, since these symptoms can have other sources. This wide-range listing covers dozens of vehicles, so please confirm your exact application on the Buyer's Guide tab.

Fitment: Fits a large range of applications; see the Buyer's Guide tab for the full list. Manufacturer part number 4194.