Dorman H621407 Brake Hydraulic Hose - Front Left or Front Right

Reliable Brake Hydraulic Hose for Audi RS4 and RS6

The Dorman H621407 brake hydraulic hose is designed specifically for Audi RS4 and RS6 models, providing a durable and flexible connection within the brake system. Engineered with quality materials, this hose ensures consistent brake fluid flow and reliable performance under various driving conditions.

• Compatible with Audi RS4 and RS6 models
• Constructed with EPDM rubber hose material for flexibility and durability
• Black outer sleeve made of rubber with protective jacket included
• Ends feature treated steel fittings: male (10 mm thread diameter) and female (M10 x 1.0 inside diameter)
• Overall length of 18.75 inches with 17.25 inches axis 1 length
• Flexible hose design for efficient brake fluid transfer
• Mounting hardware, brackets, and gaskets not included

Durable Construction and Precise Fitment

The Dorman H621407 brake hydraulic hose is manufactured with EPDM rubber, known for its resistance to heat, ozone, and brake fluid degradation. The black rubber outer sleeve and protective jacket enhance durability against abrasion and environmental factors. Both ends of the hose are equipped with treated steel fittings—male on one end and female on the other—ensuring secure and leak-free connections. With an overall length of 18.75 inches, this flexible hose is designed to meet the exact specifications required for Audi RS4 and RS6 brake systems.

Applications and Common Issues Addressed

• Replacement of worn or cracked brake hydraulic hoses on Audi RS4 and RS6
• Resolving brake fluid leaks caused by damaged or deteriorated hoses
• Restoring proper brake pressure and pedal feel
• Preventing brake system failure due to hose swelling or bursting
• Maintaining brake system integrity after collision repairs or upgrades

Installation Notes and Tips

When installing the Dorman H621407 brake hydraulic hose, ensure the brake system is fully depressurized and fluid is drained to avoid spills. Verify the hose length and fitting types match the vehicle’s specifications. Use appropriate tools to tighten the treated steel fittings without over-torquing to prevent damage. Since mounting hardware and brackets are not included, reuse existing components or source compatible parts separately. After installation, bleed the brake system thoroughly to remove air and confirm proper brake function.

Quality Assurance and Warranty

Dorman manufactures the H621407 brake hydraulic hose to meet or exceed OEM standards for fit, form, and function. The use of EPDM rubber and treated steel fittings ensures long-lasting performance under typical operating conditions. While mounting hardware and brackets are not included, the hose is designed for direct compatibility with Audi RS4 and RS6 brake systems. Please refer to Dorman’s warranty policy for coverage details on this part number.