Click to expand Tap to zoom TAPPET/LIFTER BLOCK ALIGNMENT SCREW by TWIN POWER Save $0.00 $19.99 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart TAPPET/LIFTER BLOCK ALIGNMENT SCREW Used when installing tappet/lifter blocks to ensure all oil passages and gaskets are perfectly aligned. Fits 77-99 Big twins (Except Twin cams)