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OTC's Tappet Block Alignment Set includes three adapter screws that provide perfect alignment of the oil hole from the crank case to the tappet block on Harley-Davidson Shovel and Evo style engines. Use to align rocker boxes on Evo heads. Also aligns Twin Cam oil pump. Applications include all Harley-Davidson Big Twin single cam engines, stock and aftermarket, 1976 - present. Similar to HD-33443. Value is at the core of the OTC tool and equipment portfolio. For a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it’s a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians’ productivity and shop profits.