Centric 134.66023 Drum Brake Wheel Cylinder - Rear

Reliable Drum Brake Wheel Cylinder for Chevrolet and GMC Vehicles

The Centric Premium Wheel Cylinders 134.66023 is engineered to restore proper brake function in select Chevrolet, GMC, Isuzu, and Oldsmobile models. Designed specifically for drum brake systems, this wheel cylinder ensures consistent hydraulic pressure and smooth braking performance.

• Attachment Type: Bolted for secure mounting
• Mounting Method: 2 bolts with 2 mounting holes
• Bore Diameter: 0.750 inches (19.05 mm)
• Includes bleeder screw for easy brake bleeding
• Two flat pistons for balanced hydraulic pressure
• Inlet Thread Diameter: 0.375 inches with 24 pitch inverted flare fitting
• Weight: Approximately 1.1 lbs (0.5 kg)

About Centric Premium Wheel Cylinders

The Centric Premium Wheel Cylinders line focuses on delivering precise fitment and reliable performance for drum brake hydraulic components. This product line emphasizes quality materials and exact specifications to meet or exceed OE standards, making it suitable for vehicles requiring dependable brake hydraulics like the Chevrolet S10, GMC Jimmy, and Isuzu Hombre.

Detailed Product Description

This drum brake wheel cylinder features a 0.750 inch bore diameter with two flat pistons designed to apply even pressure to the brake shoes. The bolted attachment type and dual mounting holes provide a secure and stable installation. The included bleeder screw simplifies maintenance by allowing efficient removal of air from the brake system. The inlet fitting uses a 0.375 inch thread diameter with a 24 pitch inverted flare, ensuring compatibility with standard brake lines. Weighing just over one pound, this wheel cylinder balances durability with ease of handling during installation.

Common Applications and Issues Addressed

• Restores braking performance on Chevrolet S10 and S10 Blazer drum brakes
• Replaces leaking or seized wheel cylinders on GMC Jimmy and Sonoma models
• Solves brake fluid leaks caused by worn piston seals
• Eliminates uneven brake shoe wear due to faulty hydraulic pressure
• Improves brake pedal feel and responsiveness in Isuzu Hombre and Oldsmobile Bravada

Installation Notes and Tips

• Ensure the mounting surface is clean and free of debris before installation
• Use the included bleeder screw to properly bleed the brake system after installation
• Verify the inverted flare fitting matches your brake line connections
• Tighten mounting bolts to manufacturer torque specifications to avoid leaks
• Inspect brake shoes and hardware for wear during replacement

Quality Assurance and Warranty

Centric Premium Wheel Cylinders are manufactured to meet strict quality standards, ensuring reliable hydraulic performance and durability. This part number 134.66023 undergoes rigorous testing to comply with OEM specifications. While specific warranty details vary, Centric typically offers coverage against defects in materials and workmanship to provide confidence in your purchase.