O.S. Engine OS24604000 Top-End Cylinder Head Replacement for 46AX  [OS24604000]

Service Replacement Head for 46AX Models

This O.S. Engine OS24604000 cylinder head is supplied as a replacement component for the 46AX engine range. It is intended to restore the engine top-end and is not marketed as a power upgrade.

Installation overview: remove the fitted head following the manufacturer's service sequence, check mating surfaces and the condition of the gasket, clean any deposits and old gasket material, then fit the replacement head and torque fasteners to the values listed by the manufacturer. If the manual specifies threadlocker or a particular head gasket, use those recommendations rather than improvised methods.

Tuning and service role: this head functions as a replaceable service item for routine maintenance, bench rebuilds, and pre-event checks. It helps re-establish correct compression sealing and promotes consistent warm-up and run-in when paired with properly adjusted carburetor and ignition settings.