PowerStop L6278 Disc Brake Caliper - Front Right

Front Right OE Replacement Caliper

PowerStop L6278 is a front right disc brake caliper built as a direct OE stock replacement for select Lexus GX460 and Toyota 4Runner applications. It is remanufactured for consistent piston operation, leak prevention, and dependable braking performance in a factory-style fit.

PowerStop’s Autospecialty OE Replacement Brake Calipers are aimed at drivers who want a straightforward replacement for the original front brake caliper on a Lexus GX460 or Toyota 4Runner. The L6278 follows the stock caliper layout and uses quality internal components for smooth operation and long-term service.

Key Features

• Direct replacement front right disc brake caliper
• Remanufactured in Chicago, Illinois
• 100% pressure tested for piston operation and leak verification
• Fixed caliper design with 4 steel pistons
• Cast iron caliper body with gray finish
• New seals, dust boots, bleeder screw, and stainless steel brake pad abutment clips
• High-temperature EPDM rubber dust boots and silicone lubricant for smoother movement
• Bleeder screw thread size: M7 x 1.0

Detailed Description

PowerStop L6278 is part of the PowerStop - Front OE Stock Replacement Caliper line, built for drivers seeking an OE-style brake caliper replacement without changing the original braking setup. This front right caliper uses a fixed design with four 48.01 mm steel pistons and a cast iron housing to match the stock brake system on supported vehicles. It is a practical choice for Lexus GX460 and Toyota 4Runner owners who need a replacement caliper that installs in the original location and maintains factory brake geometry.

This part number, L6278, is remanufactured with new seals, slide pins where applicable, dust boots, bleeder screws, and stainless steel brake pad abutment clips. PowerStop also pressure tests each caliper to confirm piston function and check for leaks before it leaves the facility.

Vehicle Fitment

• Fits 2010-2015 Lexus GX460, front right.
• Fits 2015 Toyota 4Runner, front right, to 6/15/2015.
• Fits 2010-2014 Toyota 4Runner, front right.

Common Repair Uses

• Leaking front brake caliper replacement
• Sticking or uneven front brake piston movement
• Brake drag caused by worn internal seals or boots
• Corrosion or damage to the original front right caliper
• Restoring factory-style braking response on a Lexus GX460 or Toyota 4Runner

Installation Notes

Verify front right position, piston count, and bleeder screw thread size before installation. Transfer or replace brake pads and inspect the rotor, brake hose, and mounting points for wear or damage during service. Proper bleeding is required after caliper replacement to remove air from the hydraulic system.

Quality Assurance

PowerStop remanufactures this caliper and bracket assembly in its Chicago, IL facility and pressure tests each unit to help confirm safe piston operation and leak-free performance. The use of new seals, EPDM dust boots, stainless steel pad abutment clips, and premium silicone lubricant supports consistent operation in demanding conditions. This part number is L6278.