O.S. Engine OS29707000 GT55 Cover Plate Crank Case Part  [OS29707000]

Product brief: GT55 crankcase cover

The O.S. Engine OS29707000 cover plate fits GT55-series crankcases to reestablish the sealing face and provide mechanical protection where the original cover is compromised.

Fitment notes: ensure mating surfaces are free from contaminants, check dowel pin and bolt hole alignment, and secure the replacement with original or correct-grade fasteners to the manufacturer's torque recommendations. Use of thread-lock and a torque tool will reduce the chance of distortion.

From a tuning perspective this plate secures crankcase integrity but does not change engine internals; correct sealing supports consistent compression and prevents leakage that could interfere with ignition or carburetor behaviour. Replace any worn gaskets while the unit is open.

This part serves as a direct replacement for GT55 crankcases listed under OS29707000; confirm part number and physical fit against your engine documentation before ordering.