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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 Harley Knucklehead Heads and Aluminum Cylinders!! Complete Top End Of Engine! $5,000.00 Buy It Now for only: $5,000.00 |
 Large Port "Aluminum" KNUCKLE HEADS for 1936 1947 Harley Knucklehead Motor $2,188.00 Buy It Now for only: $2,188.00 |
 1941 1947 Harley Davidson Replica Knucklehead 74" Long Block Engine Motor $7,799.99 Buy It Now for only: $7,799.99 |
 "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 |
 New Replica 1936 1940 Harley Davidson EL 61" Knucklehead Left Side Engine Case $829.99 Buy It Now for only: $829.99 |
 Harley Davidson Knucklehead 1936 to 1939 Right side engine case H8 castingnumber $1,500.00 Buy It Now for only: $1,500.00 |
 1932 Harley Davidson VL 1932 HARLEY VLH V VL RL WL VLD 74 FLATHEAD KNUCKLEHEAD OEM ENGINE CASE TITLE $3,299.99 Buy It Now for only: $3,299.99 |
 original Harley Davidson right side engine motor case Knucklehead $1,400.00 Buy It Now for only: $1,400.00 |
 Harley Knucklehead 1940 Right Side Case Motor Vintage Prewar Fl Flathead Ul Vl $2,050.00 Buy It Now for only: $2,050.00 |