The SL72877 hydraulic tappet body is an aircraft engine valve train component used in Continental-compatible piston engines. It forms part of the hydraulic lifter assembly that automatically maintains zero valve lash by using engine oil pressure to compensate for thermal expansion and wear in the valve train.

The “hyperbolic” tappet design refers to the cam-to-lifter contact geometry, which helps reduce surface stress and improves wear distribution on the camshaft and lifter interface.

Key features include:

PMA hydraulic tappet body for aircraft piston engines
Maintains automatic valve lash adjustment using engine oil pressure
Reduces valve train noise and wear
Hyperbolic cam contact geometry for improved load distribution
Precision-machined steel construction
Designed for continuous high-RPM aviation engine operation
Operates within lubricated valve train system
Compatible with Continental engine configurations (model-dependent IPC use)
Used in cylinder head / camshaft valve train assemblies
Installed during engine overhaul or valve train repair procedures