Aluminum Knucklehead bare head set is casted of heat treated aluminum for 74 inch Knuckle motors and is the large port type. Cast aluminum heads includes steel valve seats and large port screw - in inserts for 74 inch intake manifold. *NOTE: Accepts original valve spring cups. Uses 1-3/8 inch large hex 18mm plugs. *NOTE: Accepts large 1-3/8 inch hex Doering #3 spark plug set. FITS HARLEY: 1941-1947 FL, 1936-1947 EL,
MFG Part #:
Technote: Suggested to use with #49-0878 18mm Doering Spark Plug Set. Suggested to use with #49-0878 18mm Doering Spark Plug Set.
Dimensions:
Replaces OEM:
Made in: GERMANY
NOTE: Part installation instructions are not provided unless a link is shown below:
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