Corrosion Resistant Automotive Valve Tappet is made of investment cast heat-treated steel alloy and precision CNC-machined to exact specifications. The Valve Tappet is designed with a large diameter axle which results in increased durability and a permanent, non-replaceable roller wheel. The Valve Tappet is designed with an improved high pressure chamber and a heavy-duty wafer for positive sealing. Corrosion Resistant Automotive Valve Tappet is designed with a plunger which is precision ground and select-fitted to microscopic tolerances that facilitate a quiet operation.