Stock replacement hydraulic tappet set; to be used as stock replacement for all 53-84 B.T. models. Precision machined direct replacement tappet body; complete with premium quality hydraulic units. Repl. 18522-53A (tappet) + 17920-53A (hydraulic unit). Note: For replacement parts see 512833 tappet body; 512886 hydraulic unit and 512887 tappet roller kit.

