Dorman H621412 Brake Hydraulic Hose - Front Left or Front Right

Reliable Brake Hydraulic Hose for Audi A4, A5, S4, and S5 Models

The Dorman H621412 brake hydraulic hose is designed to provide dependable brake fluid transfer for select Audi vehicles. Engineered with durable materials, this flexible brake hose ensures consistent performance and safety for your Audi A4, A4 allroad, A4 Quattro, A5, A5 Quattro, allroad, S4, and S5 models.

• Compatible with Audi A4, A4 allroad, A4 Quattro, A5, A5 Quattro, allroad, S4, and S5
• Part number H621412 for precise fitment
• Flexible hose constructed from EPDM rubber for durability and resistance
• Black outer sleeve made of rubber for protection against wear
• Treated steel fittings: male end 1 and female end 2 for secure connections
• Overall length of 20.44 inches to match factory specifications
• No mounting hardware, brackets, or gaskets included

Durable Construction and Precise Fitment

This Dorman brake hydraulic hose features an 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 factors. Both ends of the hose are equipped with treated steel fittings—male on end 1 with a 10 mm thread diameter and female on end 2 with an M10 x 1.0 inside diameter—ensuring a secure and leak-free connection within the brake system. With an overall length of 20.44 inches, this hose matches the original equipment specifications for a proper fit on compatible Audi models.

Applications and Common Issues Addressed

• Replacement of worn or cracked brake hydraulic hoses on Audi A4, A5, S4, and S5 vehicles
• Resolving brake fluid leaks caused by damaged or deteriorated hoses
• Restoring proper brake pressure and pedal feel for safe braking performance
• Preventing brake system failure due to hose swelling or rupture
• Maintaining brake system integrity after collision repairs or component upgrades

Installation Notes and Tips

Installation of the Dorman H621412 brake hydraulic hose requires basic mechanical skills and proper brake system knowledge. Before installation, ensure the vehicle is securely lifted and supported. Carefully remove the old hose, avoiding contamination of brake fluid. Use appropriate tools to disconnect fittings and avoid damaging threads. After installing the new hose, bleed the brake system thoroughly to remove air and verify there are no leaks. Since mounting hardware and brackets are not included, reuse existing components or source replacements as needed.

Quality Assurance and Warranty Information

Dorman manufactures this brake hydraulic hose to meet or exceed OEM standards for fit, form, and function. The use of EPDM rubber and treated steel fittings ensures durability and resistance to common brake system stresses. While specific warranty details are not provided here, Dorman typically offers limited warranties on their replacement parts. Verify warranty coverage with the product documentation or supplier for peace of mind.