DZ160 RC Engine Wrist Pin Replacement (YSF4024) - YS Engine  [YSF4024]

Fit and measurement guidance for DZ160

The YS Engine YSF4024 wrist pin is a direct replacement intended for DZ160 glow engines, acting as the small-end pivot between piston and connecting rod. It is designed for fit and serviceability rather than performance enhancement, and is appropriate when replacing a worn original pin during rebuilds.

Functionally the wrist pin locates the piston on the connecting rod small end and must allow free pivot while maintaining minimal radial and axial play. When replacing, confirm critical fit dimensions such as the pin diameter and piston boss clearance on your DZ160 assembly, check that retaining clips or circlips will seat correctly, and remove any burrs that could score components.

Practical assembly tips: follow established RC glow engine assembly practice, apply a light film of engine oil to the contact areas, and rotate the assembled piston by hand to verify smooth movement and alignment before reassembling the engine. As a service part, the wrist pin helps preserve correct engine geometry when installed to specification.