J.C. Whitney JC27160026 Rear Brake Caliper Driver Side OEM Replacement

The J.C. Whitney JC27160026 is an OEM-replacement rear disc brake caliper designed for the driver side (left-hand) position. Engineered to restore proper braking function on heavy-duty GM trucks, this caliper is a direct-fit replacement that installs without modification, making it a straightforward swap for the worn or leaking original unit.

Brake calipers are a critical component of the disc brake system, using hydraulic pressure to clamp brake pads against the rotor and slow the vehicle. Over time, caliper pistons and seals can deteriorate, leading to brake fluid leaks, uneven pad wear, pulling under braking, or a stuck/dragging caliper — all conditions that require immediate replacement.

Key Features:

• Direct OEM replacement — no modifications required for installation
• Driver side (left-hand / LH) rear position
• Designed for heavy-duty 2500 HD and 3500 HD applications
• Restores proper hydraulic clamping force and even brake pad contact
• Precision-machined piston bore for consistent pedal feel
• Includes internal seals and dust boots for long-term reliability

This caliper is sold as a single unit for the rear driver side position. Always replace brake calipers in axle pairs when possible, and bleed the brake system thoroughly after installation for optimal performance and safety.