Harley Model / Year Fitment: WLDR 1940-1941, WLD 1940-1942, WL 1947-1957,
Heads have a steel insert cast in to accept the 18mm spark plug.
Combustion chamber is 10.5mm deep.
MFG Part #: 901
Technote:
Dimensions: Bolt Holes: 1/2 inches
Replaces OEM: 16683-39 16681-39
Made in: TAIWAN
Available Replacement Components / Related Part #s : 9705-18-45 , 49-1019 , 49-0945 , 15-0185
NOTE: Part installation instructions are not provided unless a link is shown below:
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