Knucklehead Engine

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

"NOS" style Short Rib Knuckle LEFT MOTOR CASE for 1936 1940 Harley Knucklehead
$828.00
Buy It Now for only: $828.00

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