Anchor 3663 Automatic Transmission Mount - Rear

Automatic Transmission Mount Overview

Anchor 3663 is a rear automatic transmission mount engineered to support the transmission and reduce vibration transfer. It is built to OEM standards and fits a range of Chevrolet, GMC, and Cadillac full-size trucks and SUVs with rear mount applications.

Key Features

• Rear automatic transmission mount for direct replacement service
• OEM-standard engineering using CAD/CAM design processes
• Natural and Styrene Butadiene rubber for abrasion resistance and aging stability
• Chemlock bonding agent for a stronger rubber-to-metal bond
• Rubber durometer matched to vehicle application requirements
• Hydraulic mount design used where OE specifies high vibration and torque control

Detailed Description

This Anchor transmission mount is designed to support the drivetrain while helping isolate vibration and noise at the rear mounting point. Part number 3663 is built with application-specific rubber hardness and OE-style construction to maintain consistent fit and function across compatible Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade applications. The design uses premium rubber materials and bonded construction to help maintain stability under load. This part cross-references Monroe Shocks & Struts (e.g., 85154273, A20023) for the same application.

What It Helps Address

• Excess drivetrain vibration felt through the chassis
• Noise caused by worn or collapsed transmission mounting components
• Movement at the rear transmission support point
• Loss of mount stability from aged rubber or bond failure
• Harshness during torque transfer under load

Installation Notes and Tips

Verify rear mount application and match the part number 3663 to the vehicle’s transmission mount location before installation. Inspect surrounding brackets and fasteners for wear or damage, and replace any compromised mounting points as needed. Confirm fitment for the specific Chevrolet Silverado 1500, GMC Sierra 1500, or Cadillac Escalade application listed before service.

Quality Assurance

Anchor engineers this mount to OEM standards using CAD/CAM processes for consistent quality and fit. The rubber construction uses materials selected for abrasion resistance and aging stability, and the bonded design is intended to maintain dependable performance in transmission support applications.