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SPC zinc alloy axle shims (4 x 6.5 x 4.0°) are heavy-duty over-the-road shims for aligning front or rear axles on many tandem trailers and trucks. The zinc alloy offers improved compression strength and hardness over aluminum shims, helping distribute load where Z blocks or axle spacers are used. Shims are sold in packs that supply six shims per part number for alignment adjustments.
SPC Performance Zinc Shims 4X6.5X4.0 deg.
