Main Part Number: AL437PK4
Alternate Part Numbers: 437, AL437, 21A874
Manufacturer: Electrical – All Mod
Category: Ignition – Various
Condition: New
Models:
FORD 600, 2000, 2600, 3000, 3600, 4000, 4100, 4600, 5000, 5600

Spark plug, Autolite Copper 437, hot heat range, power tip, non-resistor; 14mm thread diameter, 7/16 inch reach, 13/16 inch hex. For tractors 1939 to 1950 with front mount distributor. Used in 309786 and 309787 tune-up kits. Champion cross reference: H14Y, H18Y. 4-pack.