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

Crank clamp for O.S. 32/46/50-series engines

This component is manufactured as an RC engine replacement part intended for the specific O.S. Engine families listed. Its role is to secure the crankshaft assembly inside the engine case and replace worn clamps on compatible glow/nitro powerplants.

Compatibility is restricted to the model identifiers in the product title: 32F, 32SX, 46SF, 46FX, and 50SX. When servicing the engine, verify the clamp matches the crankshaft flange and bearing seating to ensure correct fit. This listing does not imply fit for models outside these codes.

Service note: remove the engine from the vehicle, follow the engine’s disassembly procedure, check bearings and adjoining components for wear, fit the clamp with correct axial alignment, and tighten fasteners evenly to prevent misalignment. Replace any fasteners with damaged threads to secure the assembly properly.

Maintenance impact: a properly located clamp keeps crankshaft alignment and bearing preload within tolerance, which helps preserve timing consistency and smooth drivetrain performance. Inspect the clamp during scheduled engine service intervals.