MasterPro A2556HY Automatic Transmission Mount - Front or Rear Right

Automatic Transmission Mount for OE Replacement

MasterPro A2556HY is a standard replacement automatic transmission mount built with a steel mount body, rubber bushing, and fluid-filled cushion for OE-style support. It is a direct-fit transmission mount for rear right and front applications on select Buick, Oldsmobile, Pontiac, and Cadillac models.

Use this MasterPro A2556HY transmission mount when replacing a worn mount on a 1986-1991 Buick LeSabre, 1986-1991 Oldsmobile Delta 88, 1987-1991 Pontiac Bonneville, or select Cadillac and Oldsmobile 98 applications. This part cross-references Anchor 2556 for the same application.

Key Features

• OE replacement automatic transmission mount
• Steel construction with black rubber bushing
• Fluid-filled cushion type for controlled drivetrain support
• Meets or exceeds original equipment manufacturer specifications
• Standard replacement grade for direct service use
• Compatible with rear right and front mounting positions, depending on application

Fitment Details

• Fits 1986-1991 Buick LeSabre, rear right; 2 stud mounting; OEM replacement.
• Fits 1986-1991 Oldsmobile Delta 88, rear right; 2 stud mounting; OEM replacement.
• Fits 1987-1991 Pontiac Bonneville, rear right.
• Fits 1988-1990 Cadillac Commercial Chassis, rear right.
• Fits 1988-1990 Cadillac DeVille, rear right.
• Fits 1988-1990 Cadillac Fleetwood, front.
• Fits 1985-1990 Oldsmobile 98, rear right; 2 stud mounting; OEM replacement.
• Fits 1985 Oldsmobile 98, rear right; 2nd design; OEM replacement.

What This Mount Helps Address

• Excess drivetrain movement during acceleration or shifting
• Vibration transferred into the cabin from a worn transmission mount
• Clunking or knocking noises from deteriorated mount support
• Misalignment caused by a collapsed or separated mount
• Uneven support at the transmission mounting point

Installation Notes

Verify the vehicle’s year, make, model, and mounting position before installation. This mount uses an OEM replacement design and does not include mounting hardware, a mounting bracket, heat shield, or instructions. Confirm the application’s stud configuration and position match the vehicle before service.

Quality Assurance

MasterPro A2556HY is built as an OE replacement and is listed as meeting or exceeding original equipment manufacturer specifications. The steel and rubber construction, along with the fluid-filled cushion design, supports factory-style transmission mounting performance for the listed Buick, Oldsmobile, Pontiac, and Cadillac applications.