New and used Harley Davidson Knucklehead engines for sale by individuals, parts suppliers, and dealers.
Clicking on the links below will open a detailed description of the Knucklehead engine in a new window on eBay.
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Large Port "Aluminum" KNUCKLE HEADS for 1936 1947 Harley Knucklehead Motor
Buy It Now for only: $2,188.00
Harley Knucklehead Heads and Aluminum Cylinders!! Complete Top End Of Engine!
Buy It Now for only: $5,000.00
"NOS" style LEFT MOTOR CASE for 1941 1947 Harley Knuckle Motor Knucklehead
Buy It Now for only: $888.00
"NOS" style Short Rib Knuckle LEFT MOTOR CASE for 1936 1940 Harley Knucklehead
Buy It Now for only: $828.00
New Replica 1936 1940 Harley Davidson EL 61" Knucklehead Left Side Engine Case
Buy It Now for only: $829.99
Harley Davidson Knucklehead 1936 to 1939 Right side engine case H8 castingnumber
Buy It Now for only: $1,500.00
1932 Harley Davidson VL 1952 HARLEY VLH V VL RL WL VLD 74 FLATHEAD KNUCKLEHEAD OEM ENGINE CASE TITLE
Buy It Now for only: $3,299.99
original Harley Davidson right side engine motor case Knucklehead
Buy It Now for only: $1,400.00
Harley Knucklehead 1940 Right Side Case Motor Vintage Prewar Fl Flathead Ul Vl
Buy It Now for only: $2,050.00