| Listed in parts books | Not catalogued by year yet |
CYL BASE NUT 12PT 3/8X26
A 12-point 3/8x26 cylinder base nut used to secure the cylinder barrel to its base studs.
This is a 12-point cylinder base nut, part number 21-0692CEI, listed as 3/8x26. Cylinder base nuts hold the barrel down onto the studs at the base of the cylinder block, so they're doing steady clamping duty right where the engine meets the crankcase.
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We don't have much more on file for this one beyond the basic listing, and it hasn't shown up across our catalog appearances, so treat this as a straightforward hardware item rather than something with a documented fitment history in our records. The 12-point head style is worth noting if you're trying to match what's already on the engine or if you're after a cleaner look than a standard hex nut.
If you're restoring a cylinder base and need to know exactly which engines this nut was used on, give us a call and we'll confirm fitment before you order.
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