Kyosho 74035-01 Cylinder Head (KE21V) spare engine part  [KY-74035-01]

KE21V cylinder head overview

This cylinder head is a dedicated spare part for the KE21V RC engine series, intended as a direct replacement component. It serves the basic functions of sealing the combustion chamber and supporting the head gasket and glow plug assembly on model nitro engines.

Fit and compatibility: the part is designated for the KE21V engine family and should be checked visually against the original head before installation to confirm alignment of mounting holes and glow plug clearance. Do not force-fit parts that show mismatch.

Installation notes: clean mating surfaces, use the correct head gasket thickness from the engine kit, and tighten head screws evenly in a crisscross pattern to avoid distortion. Inspect the glow plug seat and thread engagement during reassembly. Avoid over-torquing fasteners.

Tuning role: while the cylinder head itself does not change core engine dimensions, its condition and sealing quality affect compression consistency and heat transfer. Replace damaged or warped heads to restore reliable running and predictable tuning behavior.