Dorman H620424 Brake Hydraulic Hose - Rear Left

Reliable Brake Hydraulic Hose for Buick and Pontiac Models

The Dorman H620424 brake hydraulic hose is designed to provide dependable brake fluid transfer for select Buick and Pontiac vehicles. Engineered with durable materials, this flexible brake hose ensures consistent performance and safety for your braking system.

• Compatible with Buick Allure, LaCrosse, and Pontiac Grand Prix models
• Constructed with EPDM rubber hose material and a black rubber outer sleeve
• Features treated steel fittings: banjo type on one end and female fitting on the other
• Includes necessary gaskets for proper sealing
• Overall length of 13.13 inches with 11.63 inches axis length for precise fitment

Durable Construction and Precise Fitment

This Dorman brake hydraulic hose (part number H620424) is built with EPDM rubber, known for its resistance to heat, ozone, and brake fluid degradation. The black rubber outer sleeve adds an extra layer of protection against abrasion and environmental factors. Both ends feature treated steel fittings—one banjo fitting with a 10 mm thread diameter and one female fitting with an M10 x 1.0 inside diameter—ensuring secure connections within the brake system. The included gaskets help maintain a leak-free seal during installation. With an overall length of 13.13 inches, this flexible hose is designed to match the original equipment specifications for Buick Allure, LaCrosse, and Pontiac Grand Prix vehicles.

Applications and Common Issues Addressed

• Replaces worn or cracked brake hydraulic hoses causing fluid leaks
• Restores proper brake fluid pressure and pedal feel
• Eliminates brake drag or uneven braking due to hose collapse
• Prevents contamination and moisture ingress in brake lines
• Addresses hose damage from abrasion or environmental exposure

Installation Notes and Tips

When installing the Dorman H620424 brake hydraulic hose, ensure all old gaskets are removed and replaced with the included new gaskets to prevent leaks. Verify the hose routing matches the original path to avoid kinks or interference with suspension components. Tighten fittings to manufacturer torque specifications to maintain a secure seal. Bleed the brake system thoroughly after installation to remove air and restore proper brake function.

Quality Assurance and Warranty

Dorman brake hydraulic hoses are manufactured to meet or exceed OEM standards for fit, form, and function. The H620424 part undergoes rigorous quality control to ensure durability and reliability in demanding braking applications. This product includes a gasket for proper sealing and is backed by Dorman's limited warranty against defects in material and workmanship.