M5 Engine Stand-off 25.4mm OS74003540 - O.S. Engine  [OS74003540]

Engine Spacer, M5 x 25.4mm

The O.S. Engine OS74003540 stand-off provides a compact 25.4mm (1') spacer for M5-threaded mounting holes on RC vehicles. It is intended to secure a consistent gap between the engine and adjacent components to aid correct alignment and neat packaging in the model bay.

Fitting is straightforward: install the stand-off with M5 bolts or nuts and tighten to secure the engine flange at the specified offset. Use an appropriate thread-lock on metal fasteners where vibration could loosen connections, and confirm component alignment before applying final torque.

Standoffs are commonly used when tuning to move the engine slightly for better driveline alignment, improved cooling airflow, or to clear fuel and exhaust fittings. Always replace with parts that match the M5 thread spec and 25.4mm length to preserve fit and function.

Select this stand-off when a stable 25.4mm offset is required using M5 fixings, and check thread fit and clearance before committing to permanent assembly.