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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 OEM 1940 1947 Date Match Big Port Head Knucklehead Harley Engine UL Panhead 420 $2,995.00 Buy It Now for only: $2,995.00 |
 Engine Motor Bare Cylinder Head Set Pair 38 39 Harley Knucklehead EL Big Twin 45 $2,602.30 Buy It Now for only: $2,602.30 |
 S&S CYCLE KNUCKLEHEAD HD ENGINE KN74 Gen $9,645.99 Buy It Now for only: $9,645.99 |
 S&S CYCLE KNUCKLEHEAD HD ENGINE KN93 Gen $9,764.99 Buy It Now for only: $9,764.99 |
 S&S CYCLE KNUCKLEHEAD HD ENGINE KN93 Alt/Gen $9,974.99 Buy It Now for only: $9,974.99 |
 Complete S&S 93" KN93 Series Alternator Generator Style Knucklehead Motor Engine $9,849.94 Buy It Now for only: $9,849.94 |
 FREE FREIGHT! S&S CYCLE 310 0025 KN74" Knucklehead ENGINE '36 99 HARLEY DAVIDSON $9,645.93 Buy It Now for only: $9,645.93 |
 FREE FREIGHT S&S CYCLE 106 2161 KN93" Knucklehead ENGINE 1936 47 HARLEY DAVIDSON $9,764.93 Buy It Now for only: $9,764.93 |
 FREE FREIGHT S&S CYCLE 106 2560 KN93" Knucklehead ENGINE 1970 99 HARLEY DAVIDSON $9,974.93 Buy It Now for only: $9,974.93 |
 FLATSIDE SHOVELHEAD 74" MOTOR ENGINE RIGID 80 PANHEAD KNUCKLEHEAD PICKUP ONLY $5,495.50 Buy It Now for only: $5,495.50 |