O.S. Engine OS44714200 Pump Holder Gasket FS-70U ULTIMATE  [OS44714200]

Pump holder gasket for FS-70U

This pump holder gasket is an RC-scale engine replacement part intended for use with FS-70U engines. It serves as the sealing interface between the pump assembly and the engine housing to maintain proper fuel flow and prevent leaks that can affect run consistency.

Keep the application practical: inspect mating surfaces for old gasket residue, ensure the pump sits flush, and avoid over-torquing fasteners that can deform the gasket. The component’s role is functional and focused on maintaining sealed connections rather than changing performance characteristics.

For tuning and maintenance, treat this gasket as a consumable item during routine engine servicing. A properly seated gasket supports consistent fuel delivery under normal RC operating conditions and helps reduce variables when adjusting needle settings or diagnosing fuel-related issues.