Description
Tackle drive axle alignment issues and protect expensive fleet tires using the Specialty Products Company (SPC) 10723 Heavy Duty Axle Alignment Shim. Engineered for heavy-duty commercial trucks, semi-tractors, and tandem trailers with 4-inch wide leaf springs, this 1.5-degree (1-1/2°) wedge shim enables accurate alignment adjustments to correct improper caster and drive shaft angles.
Forged from high-tensile zinc alloy, the SPC 10723 shim provides outstanding resistance to high clamping loads and extreme road vibration without flattening or cracking. The 4" x 6.5" footprint fits standard commercial spring perches seamlessly. By keeping tandem drive axles tracking parallel, this shim eliminates costly tire scrub and reduces chassis strain. Includes 6 shims per box for full commercial shop installation.
Features
- Provides a 1.5° (1-1/2 degree) alignment adjustment to recalibrate misaligned drive axle caster and pinion angles.
- Heavy-duty zinc alloy construction withstands intense payload forces and axle torque without crushing or deforming.
- Engineered with a 4.0-inch width and 6.5-inch length to fit 4" commercial truck and trailer leaf spring suspension pads.
- Keeps tandem drive axles tracking straight to eliminate vehicle dog-tracking and premature tire wear.
- Supplied in a box of 6 shims, providing repair shops and fleet service centers with complete replacement hardware.



