Dorman H38066 Brake Hydraulic Hose - Front Left

Dorman Brake Hydraulic Hose H38066

Dorman H38066 is a front left brake hydraulic hose engineered to match the fit, function, and performance of the original hose on specific Chevrolet and GMC trucks and SUVs. Built with EPDM rubber and treated steel fittings, it supports reliable brake fluid transfer in demanding front brake applications.

• Direct replacement brake hydraulic hose for front left applications
• EPDM rubber hose with black outer sleeve
• Banjo fitting on end 1 with 10 mm thread diameter
• End 2 uses male/female treated steel fittings with 5/8 in-18 external and 3/8 in-24 internal threads
• Stamped steel bracket included; gasket or seal included
• Overall length: 22.38 in.; axis 1 length: 20.63 in.

Fitment and Application

Compatible with 1981-1984 Chevrolet C10, front left; 1985-1986 Chevrolet C10, front left; 1987 Chevrolet R10, front left; 1981-1984 GMC C1500, front left; 1985-1986 GMC C1500, front left; 1987 GMC R1500, front left. For 1981-1984 Chevrolet C10 and GMC C1500, and 1987 Chevrolet R10 and GMC R1500, the listed application includes 11 in. x 2 in. brakes with RPO JB1 manual brakes or RPO JB3 power brakes. This part cross-references Centric Parts 150.66010 for the same application.

Detailed Description

This brake hose is built as a flexible hose assembly for the front left position and is intended to restore proper hydraulic connection between the chassis and brake components. The rubber hose construction, stamped steel bracket, and treated steel end fittings are selected to match the original routing and connection style used on the listed Chevrolet C10, Chevrolet R10, GMC C1500, and GMC R1500 applications. Dorman H38066 is a practical OE-style replacement when the original hose shows age, cracking, or leakage.

Common Problems This Part Addresses

• Brake fluid seepage at the hose ends or fitting connections
• Cracked, swollen, or weathered rubber brake hose material
• Restricted brake fluid flow from an internally deteriorated hose
• Soft or inconsistent brake pedal feel caused by hose wear
• Corrosion or damage at the original hose bracket or fittings

Installation Notes and Tips

Verify front left position, brake size, and RPO code details before installation. Inspect the mating hard line, banjo connection, gaskets, and mounting points for corrosion or damage before assembly. Properly route the hose to avoid twisting, stretching, or contact with moving suspension parts, and bleed the brake system after installation to remove air from the hydraulic circuit.

Quality Assurance

Dorman engineers this brake hydraulic hose to match the original fit, function, and performance on the specified vehicles and positions. The design focuses on long-lasting durability as part of a complete brake repair.