O.S. Engine OS29707000 Cover Plate GT55 crank case part  [OS29707000]

Cover plate for GT55 crank case

The O.S. Engine OS29707000 Cover Plate GT55 is an OEM-design crank case cover intended for use on GT55-class RC engines. As a scale engine accessory, its primary role is to restore or maintain the crankcase sealing surface and mechanical protection where a replacement cover is required.

Installation is straightforward for experienced hobby technicians: clean the mating faces, verify alignment of dowel pins and bolt holes, secure the plate with the original fasteners or equivalent hardware to the manufacturer's torque recommendations, and check for airtight sealing before running. Use of proper thread-lock and a calibrated torque driver helps avoid distortion of the cover and crankcase.

In tuning and maintenance contexts the cover plate affects crankcase integrity rather than power delivery, so its correct fit matters for reliable compression, consistent running, and to prevent oil or fuel leakage that can interfere with ignition and carburetion setups. Inspect the mating surfaces and replace any deteriorated gaskets or seals during service.

This cover plate is intended as a direct replacement part for GT55-series crankcases where the OS29707000 designation applies; confirm fitment against your engine parts list before purchase to ensure correct application.