ATZTNUO Body & Cab Mount Bushing Kit for 1999–2004 Chevy Silverado & GMC Sierra 1500 — Red Polyurethane, Includes Bolts & Washers

ATZTNUO 7-141 is a complete red polyurethane body and cab mount bushing kit designed to restore ride height, reduce body sag, and tighten chassis feel on compatible 1999–2004 Chevy Silverado and GMC Sierra 1500/2500 trucks.

If your Silverado or Sierra has developed a sagging cab, excess body movement, or sloppy handling, worn body mounts are often the cause. This ATZTNUO kit replaces factory rubber mounts with high-density polyurethane components, reinforced washers, and bolts to bring back proper fitment and reduce vibration and noise. The kit focuses on 1999–2004 1500 models (2WD/4WD) and select 2500 non-HD trucks — it is not intended for heavy-duty HD variants that require longer hardware.

Will this kit fit my specific Chevy or GMC truck?

Fitment targets 1999–2004 Silverado and Sierra 1500 models in both two- and four-wheel-drive configurations, and some 2500 (non-HD) trucks. Confirm your year and model before purchase; HD or special suspension setups may need different bolts or mounts.

• Compatible: 1999–2004 Chevy Silverado 1500 (2WD/4WD)
• Compatible: 1999–2004 GMC Sierra 1500 (2WD/4WD)
• May fit: select 1999–2004 2500 non-HD models
• Not recommended: 2500HD, 1500HD, or trucks with longer factory bolts

How does polyurethane improve ride and durability?

Polyurethane provides firmer support than rubber, resisting compression set and tearing under load. That translates to reduced body roll, steadier handling, and longer service life compared with aging OEM rubber mounts that often crack and sag.

• Higher tear and abrasion resistance than rubber
• Maintains shape to prevent chassis misalignment
• Less cabin vibration and reduced rattles
• Improves handling response and steering stability

What exactly is included in the ATZTNUO 7-141 kit?

The kit supplies a full complement of upper and lower polyurethane mounts, reinforced washers, and replacement bolts so you can swap all serviceable body mounts in one job. That makes installation straightforward when following a typical body-mount replacement procedure.

• Upper mounts (part 68106) x8
• Lower mounts (part 68107) x8
• Reinforced washers (1163) x8
• Bolts (11516868) x8

How should I install and maintain these mounts for best results?

Installation usually requires lifting the cab slightly to remove old mounts and fit the new components; follow vehicle service manual steps or have a qualified technician perform the swap. Routine visual checks ensure bolts remain torqued and mounts show no unusual wear, extending their useful life.

• Use proper lift points and follow factory torque specs
• Inspect mounts and washers after the first 500–1,000 miles
• Replace any damaged hardware or misaligned components immediately
• Contact support with photos for warranty or fitment questions

Who this is for: The ATZTNUO 7-141 kit is aimed at owners of 1999–2004 Chevy Silverado and GMC Sierra 1500 trucks (and some 2500 non-HD models) who want to correct body sag, reduce cabin vibration, and restore factory ride height without sourcing individual parts. It suits DIY mechanics with basic lifting and bolting experience as well as professional shops performing a complete body-mount refresh. If you drive a heavy-duty HD variant or a truck with an atypical suspension, confirm bolt lengths and compatibility before ordering to ensure proper fitment.