Mugen MRX-5 Engine Mount Nut, Spring Steel - Arrowmax AM-MRX5-H0704  [AM-MRX5-H0704]

Engine mount spring nut for MRX-5

This replacement fastener is made for use on Mugen MRX-5 platforms and is supplied under Arrowmax part AM-MRX5-H0704. Machined as a compact nut, the spring steel design focuses on holding clamping force where vibration and repeated adjustments can loosen ordinary nuts.

Fitment and usage: this nut is intended for the engine mounting area of MRX-5 chassis and fits the standard threaded studs used on that platform. It acts as a retention device to help preserve preload on the mounting stud during running and routine setup changes. Because it is a small mechanical item, check thread compatibility with your MRX-5 studs before installation and replace like-for-like when wear appears.

Role in tuning: a spring-steel retaining nut is commonly used as part of routine maintenance and setup checks to reduce loosening under vibration and to maintain stable engine alignment during on-track adjustments. It will not alter engine power but helps keep the mechanical connection consistent.