Rear Body Mount Shim (Spacer) for Nissan Trucks

This rear body mount shim is a precision spacer used between the vehicle body and the rear mounting point on the chassis. Its job is simple but critical: restore correct body height, alignment, and load balance after wear, collision repair, or mount replacement. 🛠️

Why this part is needed

Body mounts compress over time, and repairs or frame settling can leave uneven gaps. A shim corrects the mounting stack so the body sits square on the frame, helping door gaps, bed alignment, and panel fit stay right.

How it works

The shim adds controlled thickness at the rear mount. By filling the gap, it keeps the mount bolt clamping force even and prevents the rubber mount from being over-crushed. That means less movement, less noise, and better stability on rough roads. ✅

What happens if it’s missing or damaged

A bent, cracked, or wrong-thickness shim can cause body twist, squeaks/rattles, misaligned bed-to-cab spacing, uneven ride feel, and fast wear of body mount bushings. In severe cases, mount bolts can loosen and the body may shift under load.

Best practice

Replace shims in pairs on the same mounting line when possible, and always torque mount bolts to spec after settling the body.

Compatibility

• Np300
• Desert Thunder
• Truck
• King Cab
• Np300 F/Sbs,Med
• Frontier
• Truck Eg