Cardone 19-991 Disc Brake Caliper - Rear Left or Rear Right

Remanufactured Rear Brake Caliper for Audi

Cardone Unloaded Caliper 19-991 is a remanufactured disc brake caliper built for rear brake service on select Audi applications. It is pressure-tested and finished with new premium components to support consistent braking performance on Audi S4, Audi S6, and related Quattro models.

The Cardone Unloaded Caliper line focuses on OE-style fit and complete service-ready construction. For this application, the caliper uses a steel piston, gray oil emulsion finish, and a 42.799 mm piston size with an M10x1.0 inlet port and M10x1.5 bleeder port.

Key Features

• Remanufactured original equipment-style disc brake caliper
• Steel piston construction for durable brake operation
• Pressure-tested for consistent hydraulic performance
• New high-temperature EPDM rubber seals for extended service life
• New bleeder screw for positive sealing during brake bleeding
• Plastic cap plug protects brake port threads before installation
• Rust-inhibiting finish helps preserve the caliper surface
• Package contents: caliper and hardware kit

Product Details

Cardone 19-991 is engineered as a remanufactured replacement brake caliper for rear axle service on select Audi models. It is designed for applications that require an unloaded caliper, with the piston and hydraulic sealing components renewed during the remanufacturing process. This part cross-references Audi 447615423 for the same application.

Use this caliper when servicing rear brake hydraulics on 1992-1994 Audi S4, 1995-1997 Audi S6, 1990-1994 Audi V8 Quattro, 1989-1991 Audi 200 Quattro, and 1986-1988 Audi 5000 Quattro applications. The Cardone 19-991 part number is a direct reference for these rear left and rear right fitments as listed below.

What It Helps Address

• Brake fluid leakage at the caliper
• Uneven rear braking performance
• Sticking or seized caliper piston operation
• Corrosion-related caliper wear
• Bleeding issues caused by worn bleeder hardware

Installation Notes

Fits 1995-1997 Audi S6, rear right; 1992-1994 Audi S4, rear right; 1990-1994 Audi V8 Quattro, rear right; 1989-1991 Audi 200 Quattro, rear left; and 1986-1988 Audi 5000 Quattro, rear left. Confirm bleeder port and inlet port orientation before installation, and use the brake fluid specified by the vehicle manufacturer. For floating caliper service, silicone grease is used on the mounting pins.

New hardware is included with this caliper, while the mounting bracket is included only where applicable. Pads are not included.

Quality Assurance

Each Cardone brake caliper is remanufactured to rigorous quality and performance standards and 100% pressure-tested before release. The process uses new premium components and an earth-friendly remanufacturing method that reduces the energy and raw material needed to produce a new part by 80%.