These blocks replace and surpass Harley-Davidson #18603-80A and 18610-76A tappet blocks. Made from 7075-T651 billet aerospace quality aluminum, these beautiful highly polished Panhead and Shovelhead tappet blocks are the perfect way to upgrade your earlier Big Twin. With no compromises, these extra strong tappet blocks are machined to the centerline of the cam and hold +/-.002". The bores are held perpendicular to the flange to +/-.0002". Pushrod cover pockets are machined to accept early style corks or later quad seals. Pushrod cover angles have been optimized for a leak tight seal. Designed to accommodate .550" lift at the valves.
Made from 7075 T-651 aluminum
Kits include front lifter block, rear lifter block and gaskets
Mounting screws must be purchased separately, 1/4"-24 threaded screws or 1/4"-20 thread screws depending on your specific model
Made in the USA
Product Note:
Specification
Details
Country of Origin
USA
Finish
Polished
Material
Aluminum
OEM Reference
18603-80A/18610-76A
Vehicle Fitment
Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.
