OTC 4846 Tappet Block Alignment Set, Model: 4846, Car & Vehicle Accessories / Parts. Provides the perfect alignment of the oil hole from the crank case to the tappet block on Shovel. Align rocker boxes on Evo heads. Also align twin cam oil pump. Applications include all HD Big Twin single cam engines, stock and aftermarket, 76-Present. Similar to HD-33443.