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

25.4mm M5 Engine Standoff

The O.S. Engine OS74003540 M5 stand-off is a purpose-made spacer of 25.4mm (1') for M5-threaded mounting points found on RC models. It provides a reliable offset to keep the engine separated from nearby components, helping to maintain correct alignment and internal packaging.

Fitting is carried out using M5 bolts or nuts to clamp the engine flange at the required offset. Where metal fasteners are in use, a suitable thread-locker can help secure the joint; always confirm alignment before final tightening to avoid drive train issues.

Standoffs are commonly used during setup to alter engine position for improved driveline alignment, to increase clearance for cooling airflow, or to free space for fuel and exhaust connections. Replace with parts matching the M5 thread standard and the 25.4mm length to ensure predictable results.

Opt for this stand-off when a fixed 25.4mm offset is required using M5 hardware; verify thread fit and clearance before making the installation permanent.