Champion Spark Plug Spark Plug P/N:807
Built for dependable ignition, the Champion Copper Plus 541 Spark Plug (plug type RD16) pairs a copper-core center electrode with a coated shell and a built-in resistor. It fits many vehicles, among them the 1933-1936 Ford 1/2 Ton Pickup, 1933-1936 Ford 1 Ton Pickup and 1936-1937 Buick Roadmaster Series 80. See the "Vehicles it fits" section for the full list.
Champion builds this standard-replacement plug to meet OE fit, form and function. It belongs to Champion's agricultural plug line and has an 18 mm (0.709 in) thread, a nickel center electrode tip and a non-indexed design. The number of plugs an engine uses varies by application. Country of origin: Mexico.
Interchange: 386 · RD16 · RD16J · RD16M · XD16 · XD16J · L14RU · GA11417 · BR8 · R847 · U827
This part cross-references / interchanges with the following part numbers:
What does the Champion 541 spark plug do?
It creates the spark that ignites the air-fuel mixture in the cylinder. Its copper-core center electrode is designed for accurate heat-range control and consistent sparks.
What are the main specs of the Champion 541?
It is an RD16-type resistor plug with an 18 mm thread and a flat seat. It has a nickel center electrode tip, a 0.025 in (0.65 mm) pre-gap and a crush washer included.
Does the Champion 541 come pre-gapped?
Yes, it ships gapped at 0.025 in (0.65 mm) to simplify installation. Check that gap and the tightening torque against your engine's service information before installing.
Will this spark plug fit a 1933-1936 Ford 1/2 Ton Pickup?
Yes, the 541 is listed for the 1933-1936 Ford 1/2 Ton Pickup with all engines. The "Vehicles it fits" section shows every other vehicle it fits.
What are signs a spark plug may need replacing?
Hard starting, misfires, rough running or a fouled or worn electrode are signs the plugs may need replacing. Diagnose the cause first, because ignition and fuel problems can cause similar symptoms.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.