Mardarth Front Motor & Transmission Mounts for 2007-2013 Silverado/Sierra 1500 V8, 3-Piece Direct-Fit

Mardarth front motor and transmission mounts replace worn mounts on 2007–2013 Chevrolet Silverado and GMC Sierra 1500 V8 trucks to restore drivetrain support and reduce vibration.

If your Silverado or Sierra is showing engine movement, clunks during shifts, or increased cabin vibration, the mounts that secure the engine and automatic transmission may be worn. These Mardarth replacement mounts are made to the original fitment dimensions and use higher-grade materials that were validated through quality testing, so installation returns the driveline to its intended alignment without extensive modification.

How do these mounts improve driving feel and noise?

Replacing aged mounts tightens the connection between the engine/transmission and the chassis, which cuts down on movement that causes noise and harshness. The result is less vibration transferred to the cab and cleaner shift sensations under load.

• Stiffer mounting points reduce engine rocking during acceleration.
• Better isolation decreases low-frequency vibration in the cabin.
• Consistent alignment improves transmission engagement and shift quality.

Will these fit my truck and match original parts?

These mounts were designed to be direct replacements for specified GM part numbers and model years, so they match the original mounting geometry and bolt patterns. Always confirm fitment for your specific vehicle using your VIN or a parts lookup tool before ordering.

• Compatible model years: 2007–2013 Silverado & Sierra 1500 with 4WD V8 engines.
• Replaces OEM part numbers 15854941 and 15840279; internal references A5365 and A2638.
• Package includes two front motor mounts and one 4WD transmission mount for a complete front-end replacement.

How difficult is installation and what should I expect?

Installation typically requires basic hand tools, a jack and stands, and moderate mechanical experience. The job is straightforward for a home mechanic comfortable supporting the engine while swapping mounts, but professional installation is recommended if you haven’t worked under the vehicle before.

• Use engine support or a floor jack with a block of wood to prevent damage.
• Torque bolts to factory specifications and re-check after test drive.
• Allow 30–60 minutes per mount for experienced technicians; longer for DIYers.

What comes in the box and what warranty applies?

The kit contains the left and right front motor mounts plus the front 4WD automatic transmission mount, packaged together for a full front-mount refresh. Mardarth provides a 30-day warranty to cover early defects so you can inspect parts after delivery and contact support if anything is wrong.

• Included: 15854941 front left and right motor mounts, 15840279 4WD transmission mount.
• Materials and manufacturing tested for fit and basic performance to original specs.
• 30-day limited warranty with customer support for replacement or assistance.

Who is this for? These Mardarth front motor and transmission mounts are intended for owners of 2007–2013 Chevrolet Silverado and GMC Sierra 1500 trucks with 4WD V8 engines (5.3L, 6.0L, 6.2L) who want an OEM-style replacement to reduce vibration, restore alignment, and return shift feel to expected levels. Choose this kit if you need a complete front-end mount replacement with matching part numbers and prefer a tested aftermarket option backed by short-term warranty support.