Restore firm, even clamping force to your rear brakes with the Nugeon Disc Brake Caliper 99-17257B, a direct-fit rear caliper for the listed applications: the 1988-1991 Buick Reatta, 1986-1991 Buick Riviera, 1987-1992 Cadillac Allante, 1986-1991 Cadillac Eldorado, 1986-1991 Cadillac Seville, and 1986-1991 Oldsmobile Toronado. Cataloged for both the rear right and rear left positions, it houses the hydraulic piston that pushes the brake pads against the rotor when you press the pedal, converting fluid pressure into the friction that slows the vehicle.
Signs a caliper may need replacing include brake fluid seeping at the caliper, a piston that sticks or won't retract, uneven or reduced braking, or the vehicle pulling to one side. If a failed caliper is the cause of those symptoms, this unit replaces it. Diagnose the cause before ordering, and inspect the pads and rotor at the same time. Calipers work as a matched pair on an axle, so replacing both rear sides together is good practice for balanced braking.
Interchange: Manufacturer part number 99-17257B (also 9917257B).
What position is this caliper for?
It is cataloged for the rear position, fitting both the rear right and rear left corners on the listed vehicles.
Which vehicles does the 99-17257B fit?
It is a direct-fit rear caliper for the 1988-1991 Buick Reatta, 1986-1991 Buick Riviera, 1987-1992 Cadillac Allante, 1986-1991 Cadillac Eldorado, 1986-1991 Cadillac Seville, and 1986-1991 Oldsmobile Toronado.
What does a brake caliper do?
The caliper houses a hydraulic piston that presses the brake pads against the rotor when you apply the brakes, turning fluid pressure into the friction that slows the vehicle.
What are signs a caliper may need replacing?
Fluid leaking at the caliper, a sticking piston that won't retract, uneven or reduced braking, or the car pulling to one side. Diagnose the cause before replacing.
Should I replace both rear calipers at once?
Calipers act as a matched pair on an axle, so replacing both rear sides together is good practice for even, balanced braking. This listing covers the rear positions.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
