M5 Stand-off Spacer for Engine Mounts 25.4mm OS74003540 by O.S. Engine  [OS74003540]

M5 Spacer for Engine Mounts

The O.S. Engine OS74003540 is a compact M5 stand-off measuring 25.4mm (1') designed for mounting engines in RC chassis. It creates the necessary offset to keep the engine and surrounding components properly spaced and aligned.

To fit, pair the stand-off with M5 bolts or nuts and tighten until the engine flange is secured at the required height. If metal fasteners are used, consider a thread-locker to help prevent loosening under vibration, and verify alignment before applying final torque.

In tuning scenarios, standoffs are useful to shift engine position slightly for improved driveline alignment, better airflow over cooling surfaces, or to make room for fuel lines and exhaust connections. When replacing or stacking parts, ensure thread type and the 25.4mm length match the original specification.

Use this stand-off when you require a precise 25.4mm separation with M5 hardware, and confirm thread engagement and clearance prior to final installation.