Harley Dome Head Timer Circuit Breaker Bolts Knucklehead Panhead 3754 1123-29
- Product Code: 352209127046
- Availability: In Stock
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$6.95
You are purchasing two dome head 1/4”-24 x 5/8” bolts and 1/4” split lock washers used to hold down the timer, circuit breaker, or as some people still called it- a distributor. This is for Knucklehead and Panhead OHV engines from 1936 to 1964. May only be “correct” for 36-48 based on a change in part number and description in later parts catalogs.
This is a USA made reproduction and replaces OEM 1123-29 (early part #) or 3754 (late part #). Up through the 1948 parts catalog, this is quite clearly the bolt used for the timers. It is also the 2nd gear retainer bracket bolt on 45 solo transmissions.
In 1949 and later parts catalogs I have it shows the timer bolt was 3779 which was a 1/4”-24 x 3/4” long bolt. That one is also illustrated as having a flat, rather than domed head. I do have those bolts on a different listing if those are the ones you feel you need.
The last photo is a comparison between the 1123-29 and 3779 bolt.
I’ve researched the issue and it does not seem to be addressed in Bruce Palmer’s work.
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. 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 all sorts of pre-sorted kits containing CP-1035 and CP-1038 bolts and other unique vintage H-D fasteners to meet your restoration needs.
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