Delphi TD4546W Transverse Spring Isolator Pad - Rear

Rear Transverse Spring Isolator Pad

Delphi TD4546W is a standard replacement rear transverse spring isolator pad for select GM applications. It is built for buyers looking for an OE-style suspension service part for vehicles such as the Buick Regal, Pontiac Grand Prix, Oldsmobile Cutlass Supreme, and Chevrolet Lumina.

• Standard replacement transverse spring isolator pad
• Rear position application
• OE-focused dimensional and material analysis for fitment consistency
• Tested for temperature extremes below -40 degrees C and above 120 degrees C
• Exposed to 720 hours of salt spray during validation testing

Application Details

Compatible With 1988-1997 Oldsmobile Cutlass Supreme, rear; 1988-1996 Buick Regal, rear; 1988-1996 Pontiac Grand Prix, rear; and 1990-1994 Chevrolet Lumina, rear. Delphi TD4546W is a rear transverse spring isolator pad used in suspension service where the spring interfaces with the body or related mounting surface. This part cross-references Dorman - Premium BB6544PR for the same application.

What This Part Helps Address

• Noise from worn or deteriorated rear spring isolation material
• Metal-to-metal contact at the rear spring mounting point
• Uneven spring seating caused by aged isolator pads
• Suspension service needs on Buick Regal, Pontiac Grand Prix, Oldsmobile Cutlass Supreme, and Chevrolet Lumina rear applications

Installation Notes

Verify rear suspension configuration before installation and compare the original isolator pad to Delphi TD4546W for shape, thickness, and contact points. Inspect the spring seat and surrounding hardware for wear, corrosion, or damage before reassembly. For best results, install on the correct rear position only and confirm proper spring alignment after service.

Quality Assurance

Delphi applies OE-focused engineering and validation to its aftermarket steering and suspension portfolio. TD4546W is evaluated for dimensional accuracy and material compatibility, with testing that includes extreme temperatures and extended salt-spray exposure to support consistent performance in demanding conditions.