Dorman H620045 Brake Hydraulic Hose - Rear Left

Reliable Brake Hydraulic Hose for Buick, Chevrolet, GMC, and More

The Dorman H620045 brake hydraulic hose is designed to provide dependable brake fluid transfer for select Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab models. Engineered with durable materials, this flexible brake hose ensures consistent performance and safety for your vehicle's braking system.

• Compatible with Buick 9-7x, Chevrolet Trailblazer, GMC Envoy, Isuzu Ascender, Oldsmobile Bravada, Saab 9-7x, and related models
• Overall length of 13 inches for precise fitment
• Constructed with EPDM rubber hose material and a PVC outer sleeve for durability
• Includes gaskets for secure sealing
• Ends feature treated steel fittings: banjo fitting on one end and junction fitting on the other
• Flexible hose design with a protective jacket included

Durable Construction and Design Features

This Dorman brake hydraulic hose (part number H620045) is built with an EPDM rubber hose core that resists heat, ozone, and brake fluid degradation. The black PVC outer sleeve adds an extra layer of protection against abrasion and environmental exposure. Both ends of the hose are equipped with treated steel fittings— a 10 mm banjo fitting on one end and a 1/2 in-20 junction fitting on the other—ensuring a secure and leak-resistant connection. The included gaskets help maintain a tight seal, preventing brake fluid leaks. The flexible hose design allows for easy routing within the brake system, while the protective jacket enhances durability.

Applications and Common Issues Addressed

• Replacement for worn or cracked brake hydraulic hoses causing brake fluid leaks
• Restores proper brake fluid flow and pressure for consistent braking performance
• Prevents brake system failure due to hose deterioration or damage
• Addresses issues related to hose swelling or bulging under pressure
• Suitable for brake system repairs on Buick 9-7x, Chevrolet Trailblazer, GMC Envoy, and other compatible models

Installation Notes and Tips

• Ensure the vehicle is securely lifted and supported before beginning brake hose replacement
• Use the included gaskets to achieve a proper seal at both fittings
• Do not reuse old mounting hardware or brackets, as this hose does not include them
• Carefully route the hose to avoid kinks or contact with moving parts
• After installation, bleed the brake system to remove air and verify proper brake function

Quality Assurance and Warranty Information

Dorman manufactures the H620045 brake hydraulic hose to meet or exceed OEM specifications for fit, form, and function. The hose undergoes rigorous testing to ensure resistance to heat, pressure, and environmental factors. This part includes a gasket for secure sealing and is backed by Dorman's limited warranty against defects in materials and workmanship, providing confidence in its reliability for your Buick, Chevrolet, GMC, Isuzu, Oldsmobile, or Saab vehicle.