O.S. Engine OS73300812 Dust Cap Set for 8mm Intakes (3 pcs) — Engine Filter Accessory  [OS73300812]

8mm Cap Set — 3 Pieces

This O.S. Engine OS73300812 accessory comprises three dust caps designed for R/C-scale intake and air filter interfaces. They provide simple protection to reduce grit and debris reaching the intake flange on engines using an 8mm diameter opening.

These caps fit only where the spigot or shaft measures 8mm; verify the diameter before attempting installation. Fitting is a manual task: push each cap over the intake spigot until it seats flush, then confirm it is secure. Remove the caps before operating the engine to avoid admission blockages.

During workshop servicing and setup, the dust caps help keep the intake mating surface cleaner, simplifying filter swaps and transport. They are intended as service aids for handling and short term protection, not as permanent running components.