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 $2,188.00 Buy It Now for only: $2,188.00 |
 Left Side Engine Case fits Harley Davidson knucklehead 10 0825 $935.99 Buy It Now for only: $935.99 |
 "NOS" style LEFT MOTOR CASE for 1941 1947 Harley Knuckle Motor Knucklehead $888.00 Buy It Now for only: $888.00 |
 "NOS" style Short Rib Knuckle LEFT MOTOR CASE for 1936 1940 Harley Knucklehead $828.00 Buy It Now for only: $828.00 |
 New Replica 1936 1940 Harley Davidson EL 61" Knucklehead Left Side Engine Case $829.99 Buy It Now for only: $829.99 |
 Harley Knucklehead 1945 Right Side Case Motor Vintage Fl Flathead Ul Vl $2,200.00 Buy It Now for only: $2,200.00 |
 Harley Knucklehead 1940 Right Side Case Motor Vintage Prewar Fl Flathead Ul Vl $2,200.00 Buy It Now for only: $2,200.00 |
 Harley Davidson Knucklehead 1936 to 1939 Right side engine case H8 castingnumber $1,500.00 Buy It Now for only: $1,500.00 |