Item ID: M8
These spark plugs are for 1941-1948 Chevrolet cars & trucks ONLY. They have a 10 mm base. The easiest way to tell if you have a 1941-1948 cylinder head on your car and will need these plugs, is to see if the plug needs a 5/8th socket to remove it. If it takes a 13/16th socket, you will need R45 or SP44 spark plugs. Replaces AC# M8, GM#s 1557801, 1559459. Made in the USA!
This part fits most 1941 1942 1946 1947 1948 Chevrolet Cars and Trucks.; exceptions may apply. Please read the complete description to see if this part fits your specific vehicle and application.
This product can expose you to a chemical, which is known to the State of California to cause cancer or reproductive harm.
For more information go to www.P65Warnings.ca.gov