GT15HZ Crankcase Cover Plate - OS28157000 for O.S. Engine  [OS28157000]

GT15HZ crankcase cover plate overview

This cover plate is made as a direct replacement for O.S. Engine GT15HZ units and is intended specifically for model engine use in radio-controlled vehicles. It replaces the original crankcase closure and is sized for correct fit on the GT15HZ housing.

The part secures the crankcase seal, retains internal bearings and seals, and assists reliable reassembly after service. Before fitting, ensure mating faces are clean and any gasket or sealing material is correctly seated to preserve combustion chamber integrity.

Fitting tips: remove the engine from the model or secure it in a bench mount, select the correct hex driver for the fasteners, and tighten screws progressively in a star pattern to prevent distortion. Verify dowel pins or locating features engage fully so the cover aligns without forcing.

Service context: this component is used during engine teardown, bearing renewal, or crankshaft inspections; fitting a worn cover can stop minor leaks and help recover steady compression that influences idle and throttle response on glow engines.