O.S. Engine OS28704161 Head Gasket 0.1T 105HZ for Engine Servicing  [OS28704161]

Replacement head gasket for O.S. engines

This is a replacement head gasket for RC-scale O.S. engines, identified by the marking 0.1T and 105HZ. It provides the sealing surface between the cylinder head and crankcase to help maintain combustion chamber integrity during running and setup. The gasket is intended for standard maintenance and small tuning changes where thickness influences head volume.

Installation notes: clean both mating surfaces thoroughly and remove any old gasket residue, confirm the gasket is oriented correctly before reassembly, and tighten head screws gradually following the seating torque recommended in your engine instructions. After the initial run-in, inspect the gasket for any signs of leaks or deformation and replace if sealing is compromised.

Tuning role: swapping gasket thickness is a straightforward way to make fine adjustments to head volume for compression tuning on nitro RC engines; this 0.1T option gives a small, repeatable change and should be used with systematic needle and head adjustments.