Complete upper and lower engine mounting hardware kit for 1937 to 1947 Knucklehead big twins.  As the bolts are plain-head machined, they would be "correct" from roughly 1936 to 1943, though some people think H-D was using plain headed bolts on motor mounts all through WWII and into the 1947 production year.  They will certainly work for any '36 to '57 big twin.  This kit includes the special motor mount nut, lock, and lock washer used under the generator land area from 1936 to 1957. The top motor mount bolt is machined exactly as Harley machined them on their own screw equipment leaving a small tit at the center of the bolt head. This kit utilizes the correct 2807-37 top motor mount bolt with the drilled end to secure the castle nut with a cotter pin.

We do now offer restoration-correct motor mount kits specific for 1936 Knucklehead, 1937-1947 Knucklehead, 1948-1951 Panhead, 1952-1957 Panhead, and 1958 to 1969 Panhead & Shovelhead models available.  Please see the "Vintage Hardware Pre-1980" section of my eBay store for different motor mount options as well as other CP-1038 and CP-1035 hardware kits. I also have motor mount kits for U, UL, ULH and 45 solo and Servicar.

There seems to be some misinformation on CP bolts and "reproductions".  Chandler Products has always been willing to produce these bolts with large minimum quantity orders. There's either early production or current production. They changed head dies as they wore out and had multiple dies. Top mount bolt and all nuts are USA made using the same process Harley used when they operated their own screw and nut equipment with the flat lands on them.  Spacers and washers are produced just like the ones H-D did back in the day.  Parkerizing is same finish as how these came from the factory in the 1950's.  I've also got other hardware kits listed in my store under "pre 1980's hardware" including a CP-1038 gas tank and oil tank mounting kit which would go great with this.

Will fit all 1936-1957 but considered correct on the following:

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