Dorman H621540 Brake Hydraulic Hose - Rear or Rear Center

Reliable Brake Hydraulic Hose for Cadillac, Chevrolet, and GMC Vehicles

The Dorman H621540 brake hydraulic hose is designed to provide dependable brake fluid transfer for select Cadillac, Chevrolet, and GMC models. Engineered with durable materials, this flexible brake hose ensures consistent performance and safety for your vehicle's braking system.

• Compatible with Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche 1500, Suburban 1500, Tahoe, and GMC Yukon, Yukon XL 1500
• Overall length of 16 inches for precise fitment
• Constructed with EPDM rubber hose and black rubber outer sleeve for durability
• Ends feature treated steel fittings: junction type on one end and female fitting on the other
• Includes one brake hydraulic hose per package

Durable Construction and Precise Fitment

This Dorman brake hydraulic hose (part number H621540) features a flexible EPDM rubber hose core with a black rubber outer sleeve, providing resistance to heat, abrasion, and brake fluid exposure. The treated steel fittings at both ends ensure corrosion resistance and secure connections. The junction fitting on end 1 has a 3/8-inch thread diameter, while the female fitting on end 2 has a 7/16 in-24 inside diameter, designed to match factory specifications for a reliable seal and fit.

Compatible Vehicles and Applications

The H621540 brake hose is compatible with a range of full-size SUVs and trucks, including Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche 1500, Suburban 1500, Tahoe, and GMC Yukon and Yukon XL 1500 models. This hose is intended for use in the brake hydraulic system, facilitating fluid transfer between the master cylinder and brake calipers or wheel cylinders.

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 fittings leading to fluid loss
• Flexible hose failure from heat or abrasion exposure
• Replacement of aged or deteriorated brake lines to maintain braking safety

Installation Notes and Tips

When installing the Dorman H621540 brake hydraulic hose, ensure the vehicle is securely lifted and supported. Carefully remove the old hose, avoiding contamination of the brake system. Verify that the treated steel fittings align correctly with the vehicle’s brake line connections. After installation, bleed the brake system thoroughly to remove air and restore proper brake function. This hose does not include mounting hardware or brackets, so reuse existing components or source separately if needed.

Quality Assurance and Warranty

Dorman brake hydraulic hoses are manufactured to meet or exceed OEM standards for fit, form, and function. The H621540 part is built with quality materials such as EPDM rubber and treated steel fittings to ensure durability and reliable performance. While specific warranty details are not provided here, Dorman typically offers limited warranties covering defects in materials and workmanship.