Dorman H621428 Brake Hydraulic Hose - Rear Left or Rear Right

Durable Brake Hydraulic Hose for Lexus and Toyota Vehicles

The Dorman H621428 brake hydraulic hose is engineered to provide reliable brake fluid transfer for select Lexus and Toyota models. Designed with quality materials and precise fitment, this brake hose ensures consistent braking performance for your Highlander, RX350, or RX450h.

• Compatible with Lexus Highlander, RX350, and RX450h models
• Flexible EPDM rubber hose with a black rubber outer sleeve
• Includes stamped steel bracket and gaskets for secure installation
• End fittings made of treated steel: banjo fitting on one end and female fitting on the other
• Overall length of 21.25 inches with a 10 mm thread diameter

Product Features and Specifications

This Dorman brake hydraulic hose (part number H621428) 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. The hose includes a stamped steel bracket for mounting, ensuring a secure fit within the brake system. Both ends are equipped with treated steel fittings: a banjo fitting on one end and a female fitting on the other, each designed for durability and corrosion resistance. The hose measures 21.25 inches in overall length, with a 10 mm thread diameter and M10 x 1.0 inside diameter fitting, matching OEM specifications for proper fitment.

Compatible Vehicles and Applications

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

• Lexus Highlander
• Lexus RX350
• Lexus RX450h
• Toyota Highlander
• Toyota RX350
• Toyota RX450h

It is ideal for replacing worn or damaged brake hoses to maintain safe and effective braking performance.

Common Issues Addressed by This Brake Hose

• Brake fluid leaks caused by cracked or deteriorated hoses
• Reduced brake responsiveness due to hose swelling or internal damage
• Corrosion or damage to brake line fittings
• Brake hose abrasion from contact with suspension or chassis components
• Failure of OEM brake hoses due to age or environmental exposure

Installation Notes and Tips

When installing the Dorman H621428 brake hydraulic hose, ensure the vehicle is securely lifted and supported. Carefully remove the old hose and inspect the brake system for any additional wear or damage. Use the included stamped steel bracket and gaskets to secure the new hose properly. Avoid twisting or kinking the hose during installation to maintain fluid flow integrity. After installation, bleed the brake system thoroughly to remove any air and verify proper brake function before driving.

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 materials ensures durability and resistance to common brake system contaminants. This part is backed by Dorman's limited warranty, providing coverage against defects in materials and workmanship under normal use.