Dorman H620789 Brake Hydraulic Hose - Rear Left

Reliable Brake Hydraulic Hose for Buick, Chevrolet, Pontiac, and Saturn

The Dorman H620789 brake hydraulic hose is designed to provide dependable brake fluid transfer for select Buick, Chevrolet, Pontiac, and Saturn models. Engineered with durable materials, this flexible hose ensures consistent braking performance and safety.

• Compatible with Buick Montana, Chevrolet Uplander, Pontiac Montana, Saturn Relay, and Terraza
• Constructed with EPDM rubber hose material and a black rubber outer sleeve
• Features treated steel fittings: banjo fitting on one end and female fitting on the other
• Includes gaskets for a secure, leak-free connection
• Overall length of 12.5 inches with a 10.38-inch axis length

Durable Construction and Precise Fitment

This Dorman brake hydraulic hose (part number H620789) 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 type with a 10 mm thread diameter and one female fitting with an M10 x 1.0 inside diameter—ensuring a secure and corrosion-resistant connection. The package includes necessary gaskets to maintain a tight seal and prevent leaks.

Compatible Vehicle Applications

This brake hose is specifically designed for use on the following vehicles: Buick Montana, Chevrolet Uplander, Pontiac Montana, Saturn Relay, and Saturn Terraza. Using the correct brake hydraulic hose like the Dorman H620789 helps maintain proper brake system function and safety on these models.

Common Brake System Issues Addressed

• Leaking or cracked brake hoses causing fluid loss
• Reduced brake responsiveness due to hose deterioration
• Swollen or bulging hoses affecting brake pressure
• Corroded or damaged fittings leading to brake fluid leaks
• Incompatible or worn hoses causing brake system failure

Installation Notes and Tips

• Ensure the vehicle is securely lifted and supported before beginning brake hose replacement
• Use the included gaskets to prevent leaks at the fitting connections
• Inspect brake lines and fittings for corrosion or damage during installation
• Bleed the brake system thoroughly after hose installation to remove air
• Verify hose routing matches original to avoid kinks or interference

Quality Assurance and Warranty

Dorman manufactures the H620789 brake hydraulic hose to meet or exceed OEM specifications 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 includes a gasket for proper sealing and is backed by Dorman's standard warranty coverage, providing confidence in its reliability and performance.