Carlson 7939 Disc Brake Caliper Piston - Front

Carlson Disc Brake Caliper Piston 7939

The Carlson 7939 disc brake caliper piston is a front brake hydraulics replacement for select Lexus and Toyota applications. It is listed for front caliper service on Lexus GX460, Toyota 4Runner, Lexus LX470, and Toyota Land Cruiser models with the specified caliper configurations.

Key Features

• Disc brake caliper piston for front brake service
• Direct fit application coverage for select Lexus and Toyota vehicles
• Used in caliper repair applications for D976 and D772 brake setups
• Fits 2022 Lexus GX460, front, D976; Disc Brake Caliper Piston
• Fits 2022 Toyota 4Runner, front, D976; Disc Brake Caliper Piston
• Fits 2020-2021 Lexus GX460, front, D976
• Fits 2020-2021 Toyota 4Runner, front, D976
• Fits 2010-2019 Lexus GX460, front, Caliper Repair Kit for Disc Brake Caliper D976
• Fits 2010-2019 Toyota 4Runner, front, Caliper Repair Kit for Disc Brake Caliper D976
• Fits 1998-2007 Lexus LX470, front, Large Piston; Disc; D772
• Fits 1998-2007 Toyota Land Cruiser, front, Large Piston; Disc; D772

Detailed Description

Carlson 7939 is a disc brake caliper piston built for front brake hydraulic repair on select Lexus GX460 and Toyota 4Runner models, along with earlier Lexus LX470 and Toyota Land Cruiser applications. Use this part when servicing a front caliper that calls for D976 or D772 piston configurations. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Repair Uses

• Worn or damaged front caliper piston replacement
• Brake fluid leakage at the caliper piston area
• Brake drag caused by piston wear or corrosion
• Poor brake pedal response from caliper hydraulic issues
• Front brake rebuilds on Lexus GX460, Toyota 4Runner, Lexus LX470, or Toyota Land Cruiser

Installation Notes

Verify the caliper code and piston style before installation. Match the vehicle year, make, model, and front position to the listed fitment, including D976 and D772 notes where shown. Inspect the caliper bore, seals, and brake fluid condition during service, and follow the vehicle manufacturer’s brake bleeding procedure after installation.

Quality Assurance

Carlson brake components are cataloged for specific brake repair applications and fitment-matched service work. Confirm the caliper identification and vehicle application before ordering to ensure the correct front brake piston for your repair.