Mardarth engine and transmission mount kit — 3-piece direct-fit for 1999–2006 Silverado/Sierra/Tahoe V8 5.3L–6.0L

Mardarth's three-piece engine and transmission mount kit replaces worn mounts for 1999–2006 GM trucks and SUVs, restoring stable engine alignment and reducing vibration.

This complete mounting kit includes two A2909 engine motor mounts and one A2638 transmission mount engineered as a direct replacement for many Silverado, Sierra, Tahoe, Suburban, Yukon and select SUVs. Built from higher-grade materials to match or exceed OEM durability, the set is sized and shaped to fit factory locations so you can return engine and transmission support to original spec with minimal modification. The kit supports common V8 5.3L and 6.0L powertrains and several other GM V6/V8 displacements listed by vehicle application.

Which vehicles and engines will this mount kit fit?

This kit covers a wide range of GM models from late 1990s through mid-2000s. Fitment includes multiple Silverado and Sierra 1500/2500/3500 models, Tahoe, Suburban, Yukon, Avalanche, Escalade, and even select Hummer H2 years where noted.

• Compatible with 1999–2006 Silverado/Sierra 1500 (4.3L–6.0L) and select 2500/3500 variations.
• Fits 2000–2006 Tahoe and Suburban 5.3L/6.0L 4WD models and 2000–2006 Yukon 4.8L/5.3L (4WD).
• Includes applications for 2002–2005/06 Escalade, 2002–05 Avalanche 1500, and 2008 Hummer H2 6.2L where listed.

What parts are included and do they replace OEM numbers?

The package contains two A2909 engine motor mounts plus one A2638 transmission mount, designed as direct replacements for original equipment mount numbers. Replacement part references help confirm compatibility with your vehicle’s factory parts list prior to purchase.

• Package: 2x A2909 engine motor mounts and 1x A2638 transmission mount.
• Cross-reference part numbers: A2909, 2909, 605432, 605440, 15041508, 15226251, A2638.
• Sold as a three-piece kit to restore both engine and transmission damping at once.

How difficult is installation and what should I prepare?

Installation is straightforward for experienced mechanics and shops because the mounts are direct-fit replacements. If you’re less experienced, professional installation is recommended; basic hand tools plus a jack and engine support or hoist are commonly required to align and secure the mounts properly.

• Loosely fit all bolts before final tightening to ensure correct alignment and prevent binding.
• Some small adjustment of the heat shield may be necessary for easier access during assembly.
• Expect reduced repair time if replacing mounts in pairs or with an engine support tool; avoid driving until torque specs are applied.

What performance and longevity benefits can I expect?

These mounts are manufactured from upgraded raw materials to resist wear, cracking, and premature failure compared with fatigued OEM mounts. Replacing worn mounts restores factory engine positioning, reduces vibration and clunking, and helps maintain driveline alignment.

• Durable construction intended to meet or exceed OEM specifications for service life.
• Helps reduce engine noise and vibration transmitted to the cab when installed correctly.
• Maintains proper drivetrain geometry to prevent excess wear on related components.

Who is this for: This Mardarth mount kit is aimed at owners of compatible late‑1990s to mid‑2000s GM trucks and SUVs who want a durable, direct-fit replacement to restore engine and transmission support. It’s ideal for DIY mechanics with tools and experience, independent shops needing dependable replacement parts, and anyone updating mounts after engine or transmission work to shorten downtime and protect drivetrain alignment.