Dorman H66724 Brake Hydraulic Hose - Front Left, Front Right, Rear Left or Rear Right

Durable Brake Hydraulic Hose for Select GM Vehicles

The Dorman H66724 brake hydraulic hose is designed to provide reliable brake fluid transfer for various Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models. Engineered with quality materials, this flexible hose ensures consistent performance and safety in your vehicle's braking system.

• Constructed with EPDM rubber hose material for flexibility and durability
• Black outer sleeve made of rubber for protection against wear and environmental factors
• Ends feature treated steel fittings: male 7/16 in-20 thread and female 3/8 in-24 inside diameter
• Overall length of 14.25 inches to match specific vehicle requirements
• Includes one brake hydraulic hose without mounting hardware or brackets

Product Details and Specifications

This Dorman brake hydraulic hose (part number H66724) is a flexible hose designed to replace original equipment on select GM vehicles. The hose uses EPDM rubber, known for its resistance to heat, ozone, and brake fluid, ensuring long-lasting service life. The black rubber outer sleeve adds an extra layer of protection against abrasion and environmental exposure. Both ends of the hose are fitted with treated steel connectors—one male fitting with a 7/16 in-20 thread diameter and one female fitting with a 3/8 in-24 inside diameter—providing secure and leak-resistant connections within the brake system. The hose measures 14.25 inches in overall length, making it compatible with specific models such as the Chevrolet Impala, Buick LeMans, Pontiac GTO, Cadillac DeVille, and others listed in the fitment.

Compatible Vehicles and Applications

This brake hydraulic hose is compatible with a range of GM vehicles, including:

• Buick models like Skylark, LeMans, and Starfire
• Cadillac models including Commercial Chassis and other select vehicles
• Chevrolet models such as Bel Air, Caprice, Corvette, El Camino, Impala, and Malibu
• Oldsmobile Cutlass and Tempest
• Pontiac Grand Prix, GTO, and Starfire

Common Issues Addressed by This Brake Hose

• Brake fluid leaks caused by cracked or worn hoses
• Reduced brake responsiveness due to hose swelling or internal damage
• Corrosion or damage to original fittings leading to brake fluid loss
• Hose deterioration from exposure to heat and road contaminants
• Replacement of aged or damaged brake lines to maintain braking system integrity

Installation Notes and Tips

• Ensure the vehicle is securely lifted and supported before beginning brake system work
• Use proper tools to disconnect and reconnect fittings to avoid damage to threads
• Bleed the brake system thoroughly after installation to remove air and ensure proper brake function
• Inspect surrounding brake components for wear or damage during replacement
• Verify hose length and fitting types match the original equipment for proper fitment

Quality Assurance and Warranty

Dorman manufactures this brake hydraulic hose to meet or exceed OEM standards for fit, form, and function. The EPDM rubber hose and treated steel fittings are selected for durability and resistance to brake fluid and environmental factors. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship to provide confidence in product reliability.