JEGS 630672 GM Rear Disc Brake Caliper for left/driver side is a NEW cast iron single-piston unit in a Black powder-coated finish and comes preloaded with D154 disc brake pads, a self-adjusting mechanical e-brake mechanism & hardware. This JEGS brake caliper is the perfect replacement for worn-out leaking factory OEM units and replacements for some of our rear disc brake conversion kits.

GM Rear Disc Brake Caliper with E-Brake Features:

• 10mm Hose Thread
• 1979 El Dorado Style
• Use w/ Rear GM, Ford, Mopar Disc Brake Conversion Kits
• Direct Replacement Caliper for 555-630112

The links below provide replacement part numbers for JEGS Disc Brake Conversion Kits

JEGS FRONT Disc Brake Conversion Kit Parts Guide

JEGS REAR Disc Brake Conversion Kit Parts Guide

Replaces Factory OEM Rear Disc Brake Caliper on these Vehicles:

• 1979-1985 Buick Riviera
• 1979-1985 Cadillac Eldorado
• 1980-1985 Cadillac Seville
• 1979-1985 Oldsmobile Toronado

** E-Brake Cable is required for self-adjusting mechanism to work properly

NOTE: One of the biggest advantages of a disc brake system is the foolproof self-adjuster. Not so with this rear GM system. The rear caliper adjusts off the parking brake. The parking brake is incorporated into the caliper. You must set the parking brake every time you park the car. The rear caliper piston utilizes a one-way clutch inside the caliper piston. When the parking brake is applied the clutch senses when there is 0.030 in. or more clearance between the friction material and the rotor on the inboard side. When there is more than 0.030 in. the clutch turns inside the piston adjusting it out keeping the rear brakes adjusted. If you do not set your parking brake every time you will start to lose brake pedal pressure (low and spongy) and the adjuster mechanism will not work any longer.