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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 Beautiful! 1939 Harley Davidson Knucklehead Motor Engine OEM Rebuilt Title M5 $31,499.00 ( Bids) Buy It Now for only: $31,499.00 |
 OEM 1940 1947 Rear Big Port Head Knucklehead Harley Engine FL Panhead UL W 421 $1,450.00 ( Bids) Buy It Now for only: $1,450.00 |
 S&S Cycle Knucklehead HD Engine KN93 Gen $12,725.99 ( Bids) Buy It Now for only: $12,725.99 |
 S&S Cycle Knucklehead HD Engine KN93 Alt/Gen $12,725.99 ( Bids) Buy It Now for only: $12,725.99 |
 original Harley Davidson Front Safety engine Guard crashbar knucklehead panhead $1,200.00 ( Bids) Buy It Now for only: $1,200.00 |
 Engine Motor Bare Cylinder Head Set Pair 38 39 Harley Knucklehead EL Big Twin 45 $2,602.30 ( Bids) Buy It Now for only: $2,602.30 |
 Used 1997 Zippo Harley Davidson Knuckle Head Engine Type Lighter Very Rare Japan $1,489.00 ( Bids) Buy It Now for only: $1,489.00 |
 Complete 1940 1947 Rear Big Port Head Knucklehead Harley Engine FL Panhead UL W $2,630.00 ( Bids) Buy It Now for only: $2,630.00 |
 OEM 1940 1947 Front Big Port Head Knucklehead Harley Engine FL Panhead UL EL 503 $1,600.00 ( Bids) Buy It Now for only: $1,600.00 |
 Used 1997 Zippo Harley Davidson Knuckle Head Engine Type Lighter Very Rare $1,499.00 ( Bids) Buy It Now for only: $1,499.00 |