Dorman H621199 Brake Hydraulic Hose - Rear Left

Durable Brake Hydraulic Hose for Chevrolet and GMC Trucks

The Dorman H621199 brake hydraulic hose is designed to provide reliable brake fluid transfer for heavy-duty trucks. Engineered for Chevrolet Silverado 3500, Silverado 3500 HD, and GMC Sierra 3500 HD models, this flexible hose ensures consistent braking performance under demanding conditions.

• Compatible with Chevrolet Silverado 3500, Silverado 3500 HD, and GMC Sierra 3500 HD
• Constructed with EPDM rubber hose material and a black rubber outer sleeve for durability
• Features treated steel fittings: banjo fitting on one end and female fitting on the other
• Includes gaskets for secure sealing; mounting hardware and brackets are not included
• Overall length of 15.5 inches with a 13-inch axis length for precise fitment

Technical Details and Construction

The Dorman H621199 brake hydraulic hose is a flexible hose designed to withstand the pressures of hydraulic brake systems. The hose material is EPDM rubber, known for its resistance to heat, ozone, and brake fluid degradation. The outer sleeve is made of black rubber, providing additional protection against abrasion and environmental factors. Both ends feature treated steel fittings: a banjo fitting with a 10 mm thread diameter on one end and a female fitting with an M10 x 1.0 inside diameter on the other. This configuration ensures a secure and leak-resistant connection within the brake system. The package includes necessary gaskets to maintain a proper seal during installation.

Applications and Problem Solving

• Replaces worn or cracked brake hydraulic hoses on compatible Chevrolet and GMC heavy-duty trucks
• Addresses brake fluid leaks caused by damaged or deteriorated hoses
• Restores proper brake pressure and pedal feel for safe vehicle operation
• Prevents brake system failure due to hose swelling or rupture
• Suitable for use in demanding environments requiring flexible and durable brake lines

Installation Notes and Tips

When installing the Dorman H621199 brake hydraulic hose, ensure the vehicle is securely lifted and supported. Carefully remove the old hose, taking care to avoid contamination of the brake system. Use the included gaskets to ensure a proper seal at the fittings. Since mounting hardware and brackets are not included, reuse existing components if they are in good condition or source replacements separately. After installation, bleed the brake system thoroughly to remove air and verify there are no leaks before driving.

Quality Assurance and Warranty

Dorman manufactures the H621199 brake hydraulic hose to meet or exceed OEM specifications 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 standards, providing confidence in its performance and reliability for Chevrolet Silverado 3500, Silverado 3500 HD, and GMC Sierra 3500 HD vehicles.