O.S. Engine OS29064000 Replacement Headsink Cylinder Head Compatible with 91SZ-H.RZ-H  [OS29064000]

Replacement headsink for 91 series engines

This headsink cylinder head is supplied as a scale replacement part carrying the OS29064000 reference, intended for engines in the 91SZ-H.RZ-H range. It refreshes the external head surface to maintain heat dispersion without affecting internal engine dimensions.

Fitting is straightforward for those familiar with nitro engine work: remove the old head, clean mating faces and gasket residue, position the replacement head evenly, and secure fasteners to the torque recommended by the engine maker. Do not over-torque and verify clearances and sealing before first use.

As a service component, the headsink head helps sustain reliable thermal transfer and offers a consistent sealing surface for glow head and gasket arrangements. Always verify the 91SZ-H.RZ-H compatibility code against your engine before purchase.

Select this head when you need a dependable like-for-like replacement for engines marked 91SZ-H.RZ-H and follow standard installation and tuning guidance.