Dorman H620779 Brake Hydraulic Hose - Front Left

Durable Brake Hydraulic Hose for GM Trucks and SUVs

The Dorman H620779 brake hydraulic hose is engineered to provide reliable brake fluid transfer for select Cadillac, Chevrolet, and GMC models. Designed with quality materials and precise fitment, this flexible brake hose ensures consistent braking performance for vehicles like the Chevrolet Silverado 1500 and GMC Sierra 1500.

• Compatible with Cadillac Escalade, Chevrolet Avalanche, GMC Yukon, and more
• Flexible EPDM rubber hose with a durable black outer sleeve
• Includes stamped steel bracket and gaskets for secure installation
• End fittings made of treated steel with banjo and female connections
• Overall length of 20.63 inches with 10 mm and M12 x 1.0 thread diameters

Product Features and Specifications

This Dorman brake hydraulic hose (part number H620779) features a flexible EPDM rubber hose material that resists heat and brake fluid degradation. The black rubber outer sleeve provides additional protection against abrasion and environmental exposure. The hose includes a stamped steel bracket and gaskets to ensure a secure and leak-free connection. Both end fittings are constructed from treated steel, with a banjo fitting on one end and a female fitting on the other, designed to match factory specifications. The hose measures 20.63 inches overall, with precise thread diameters of 10 mm and M12 x 1.0 for proper fitment.

Compatible Vehicles and Applications

This brake hydraulic hose is compatible with a range of GM trucks and SUVs, including:

• Cadillac Escalade, Escalade ESV, and Escalade EXT
• Chevrolet Avalanche, Silverado 1500, Silverado 1500 LD, Suburban 1500, and Tahoe
• GMC Sierra, Sierra 1500, Sierra 1500 Limited, Yukon, Yukon XL, and Yukon XL 1500

Common Issues Addressed by This Brake Hose

• Brake fluid leaks caused by cracked or worn hoses
• Reduced brake responsiveness due to hose swelling or damage
• Corrosion or damage to end fittings affecting brake line integrity
• Loose or missing mounting brackets causing hose movement
• Brake system contamination from degraded hose materials

Installation Notes and Tips

When installing the Dorman H620779 brake hydraulic hose, ensure the vehicle is safely lifted and supported. Replace the hose along with the included gaskets to maintain a proper seal. The stamped steel bracket should be securely mounted to prevent hose movement and wear. Use appropriate tools to avoid damaging the treated steel fittings and verify thread compatibility with the vehicle’s brake system. Bleed the brake system thoroughly after installation to remove air and ensure optimal brake performance.

Quality Assurance and Warranty

Dorman manufactures this brake hydraulic hose to meet or exceed OEM standards for durability and performance. The use of EPDM rubber and treated steel fittings ensures resistance to heat, corrosion, and brake fluid exposure. This part is backed by Dorman’s limited warranty, providing coverage against defects in materials and workmanship under normal use.