Kyosho 74035-04 KE21V Crankcase Replacement  [KY-74035-04]

KE21V Engine Crankcase Assembly

This crankcase set is a replacement engine housing engineered specifically for the KE21V RC engine. It forms the structural enclosure for the crank assembly and internal parts, restoring correct alignment and sealing after wear or impact.

Compatibility is limited to the KE21V engine family; confirm your engine code before ordering. The part is intended for hobby-grade nitro RC engine use only and is sized to RC scale dimensions.

Installation notes: remove the engine from the model, disassemble the top-end and internal components, and inspect bearings and seals for wear before fitting the new crankcase. Use correct fastener torque and thread-lock where recommended by your engine manual. If replacing a cracked or distorted crankcase from impact or corrosion, carefully check the crankshaft and connecting rod for straightness and signs of fatigue.

Tuning and maintenance role: replacing a worn or damaged crankcase restores crankshaft alignment and compression stability, which can reduce oil seepage and help stabilize idle and throttle response when combined with routine carburetor and head servicing.