O.S. Engine OS71530400 Crankshaft Clamp for 32F/32SX/46SF/46FX/50SX Engines  [OS71530400]

Replacement crankshaft clamp for O.S. 32/46/50 series

This crankshaft clamp is an RC engine replacement component made to fit the O.S. Engine model families listed. It secures the crankshaft assembly inside the crankcase and serves as a direct swap for worn or damaged clamps on compatible glow/nitro engines.

Fitment covers the model codes shown in the product title: 32F, 32SX, 46SF, 46FX, and 50SX. Before final assembly, confirm the clamp aligns with the crankshaft flange profile and bearing seats supplied on your engine to ensure correct installation. This item does not extend compatibility beyond the model codes listed.

Installation guidance: remove the engine from the model, split the crankcase following your engine service manual, inspect bearings and mating faces for wear, fit the clamp ensuring axial alignment, and tighten screws progressively and evenly. Do not over-torque; replace any fasteners with damaged threads.

A correctly installed clamp helps preserve crankshaft concentricity and bearing preload, supporting stable ignition timing and smooth drivetrain operation. Include the clamp in routine inspections to detect wear early and maintain consistent engine performance.