Dorman H620439 Brake Hydraulic Hose - Rear Left or Rear Left Outer

Reliable Brake Hydraulic Hose for Chevrolet and GMC Trucks

The Dorman H620439 brake hydraulic hose is designed to provide dependable brake fluid transfer for Chevrolet and GMC trucks. Engineered with durable materials and precise fittings, this flexible brake hose ensures consistent braking performance for your Sierra 1500, Silverado 1500, Yukon, and related models.

• Compatible with Chevrolet Sierra 1500, Sierra 1500 HD, Silverado 1500, Silverado 1500 HD, Yukon, and Yukon XL 1500
• Flexible brake hydraulic hose constructed from EPDM rubber for durability and heat resistance
• Black outer sleeve made of rubber for protection against wear and environmental factors
• Includes stamped steel bracket and gaskets for secure mounting and sealing
• End fittings made of treated steel: banjo fitting on one end and female fitting on the other
• Overall length of 12.75 inches with a 9-inch axis length for proper fitment

Durable Construction and Precise Fitment

The Dorman H620439 brake hydraulic hose features a flexible EPDM rubber hose material that resists heat, ozone, and brake fluid degradation. The black rubber outer sleeve adds an extra layer of protection against abrasion and environmental exposure. This hose includes a stamped steel bracket for secure attachment to the vehicle chassis, ensuring stability during operation. Both ends of the hose are equipped with treated steel fittings: a banjo fitting on one end with a 0.38-inch thread diameter and a female fitting on the other with a 3/8 in-24 inside diameter, providing a reliable connection to the brake system. The package includes necessary gaskets to ensure a proper seal and prevent leaks.

Compatible Vehicles and Applications

This brake hydraulic hose is specifically designed for use with the following vehicles:

• Chevrolet Sierra 1500 and Sierra 1500 HD
• Chevrolet Silverado 1500 and Silverado 1500 HD
• GMC Yukon and Yukon XL 1500

It is intended to replace worn or damaged brake hoses that can cause issues such as brake fluid leaks or reduced braking efficiency.

Common Issues Addressed by This Brake Hose

• Brake fluid leaks due to cracked or deteriorated hoses
• Reduced brake responsiveness caused by hose swelling or internal damage
• Brake system contamination from compromised seals or fittings
• Vibration or noise from loose or damaged mounting brackets
• Corrosion or wear on original fittings leading to brake failure risks

Installation Notes and Tips

When installing the Dorman H620439 brake hydraulic hose, ensure the vehicle is securely lifted and supported. Carefully remove the old hose and clean the mounting points. Use the included gaskets to prevent leaks and tighten fittings to manufacturer torque specifications. Verify that the stamped steel bracket is properly secured to avoid hose movement during operation. After installation, bleed the brake system thoroughly to remove air and restore proper brake function.

Quality Assurance and Warranty

Dorman manufactures this brake hydraulic hose to meet or exceed OEM standards for fit, form, and function. The use of treated steel fittings and EPDM rubber hose material ensures durability and resistance to common brake system stresses. This part is backed by Dorman's quality assurance processes, providing confidence in its reliability and performance. Please refer to Dorman's official warranty policy for specific coverage details.