This Rear Brake Wheel Cylinder (1-5/16″, Right-Hand) is designed for Isuzu NQR and Isuzu NPR-HD manufactured from 2003 to 2016.

The wheel cylinder is a critical hydraulic component in the rear drum brake system. It converts hydraulic pressure from the brake master cylinder into mechanical force to push the brake shoes against the drum, slowing or stopping the vehicle.

Over time, wheel cylinders can leak, corrode, or seize, which may cause the following:

• Reduced braking efficiency

• Soft or spongy brake pedal

• Uneven brake shoe wear

• Brake fluid leaks near the rear wheels

• Noisy or dragging brakes

Replacing the OEM rear wheel cylinder restores proper hydraulic function, ensures even brake engagement, and maintains safe stopping performance. Manufactured to OEM specifications, it provides correct bore size, seal quality, and mounting alignment.

Key Features

• OEM rear brake wheel cylinder (Right-Hand)

• Bore size: 1-5/16″

• Fits Isuzu NQR and NPR-HD (2003–2016)

• Restores proper drum brake operation

• Direct-fit replacement with durable seals and housing

• Protects brake system from leaks and uneven wear

Vehicle Compatibility (2003–2016)

Fits Isuzu Medium-Duty Trucks:

• Isuzu NQR

• Isuzu NPR-HD

Condition: New OEM
Position: Rear brake wheel cylinder – Right-Hand (passenger side)
Bore Size: 1-5/16″

Common Signs You Need a New Rear Wheel Cylinder

• Soft or sinking brake pedal

• Brake fluid leakage at rear drum brakes

• Uneven or delayed braking

• Rear brakes dragging or making noise

• Vehicle pulling to one side when braking