FS-70U Pump Mount Seal OS44714200 O.S. Engine  [OS44714200]

FS-70U pump gasket replacement part

This pump holder gasket serves as a replacement component for FS-70U RC engines. It seals the interface between the pump assembly and engine housing to keep fuel flowing correctly and to stop leaks that can destabilise runs.

Apply with care: check mating surfaces for residue, ensure an even seat, and avoid overtightening fasteners which can deform the gasket. The component is built to secure connections and is not intended to change engine performance.

Use this gasket as part of normal servicing cycles. Proper installation helps maintain consistent fuel delivery and reduces variables when tuning needle settings or chasing fuel-related faults.