Motor Mount Spacer 1/4in

The Motor Mount Spacer 1/4in (ALL 18620) from Allstar Performance is a precision engineering component designed to adjust engine-to-frame clearance and optimize motor mount geometry in high-performance and modified vehicles. As an experienced mechanic, you know that factory motor mounts are engineered for stock engine configurations, but when you add headers, swap in a larger displacement engine, or lower your vehicle's chassis, mount geometry becomes critical. This spacer solves that problem by creating precise separation between the engine block and the mount structure, restoring proper alignment and reducing vibration transfer to the frame.

Manufactured to exacting tolerances, this 1/4-inch thickness spacer integrates seamlessly into existing motor mount assemblies without requiring complete bracket replacement or welding modifications. The compact design—measuring 4 x 0.45 x 7 inches—fits within standard engine bay dimensions and maintains structural integrity under the lateral, vertical, and rotational loads that modern performance engines generate. Its minimal weight (0.07 lbs) means zero parasitic mass penalty while delivering tangible improvements in engine positioning, reducing accessory belt misalignment and preventing bind-up during acceleration or deceleration cycles.

Whether you're installing a crate engine, running a lowered street rod, or fine-tuning a restomod build, this motor mount spacer is essential for mechanics and builders who demand precision. It works across a range of small-block and big-block applications where mount clearance is compromised by modification. Installation is straightforward—simply position the spacer between the engine block and existing mount during reassembly—making it an economical alternative to custom fabrication. Stock this part for any customer project involving engine swaps, chassis modifications, or performance upgrades.