Dorman H621290 Brake Hydraulic Hose - Rear Left or Rear Right

Reliable Brake Hydraulic Hose for Audi A8 Quattro and S8

The Dorman H621290 brake hydraulic hose is designed to provide dependable brake fluid transfer for Audi A8 Quattro and S8 models. Engineered with durable materials, this flexible hose ensures consistent braking performance under various driving conditions.

• Compatible with Audi A8 Quattro and S8 models
• Constructed with EPDM rubber hose material for flexibility and durability
• Black outer sleeve made of rubber for protection against wear
• Ends feature treated steel fittings: banjo fitting on one end and female fitting on the other
• Includes gaskets for secure sealing
• Overall length of 11.65 inches with precise fitting dimensions

Durable Construction and Precise Fitment

This Dorman brake hydraulic hose (part number H621290) features a flexible EPDM rubber hose 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 are equipped with treated steel fittings—one banjo fitting with a 12 mm thread diameter and one female fitting with an M10 x 1.0 inside diameter—ensuring a secure and leak-free connection. The hose measures 11.65 inches overall length, with an axis length of 10.81 inches, designed specifically for the brake systems of Audi A8 Quattro and S8 vehicles.

Applications and Problem Resolution

• Replaces worn or cracked brake hydraulic hoses on Audi A8 Quattro and S8
• Addresses brake fluid leaks caused by damaged or deteriorated hoses
• Restores proper brake fluid pressure and pedal feel
• Prevents brake system failure due to hose rupture or leakage
• Ensures compliance with manufacturer specifications for brake line components

Installation Notes and Tips

When installing the Dorman H621290 brake hydraulic hose, ensure all old gaskets are replaced with the included new gaskets to maintain a proper seal. Verify that the banjo and female fittings are tightened to manufacturer torque specifications to prevent leaks. This hose does not include mounting hardware or brackets, so reuse existing components or source separately if needed. Bleed the brake system thoroughly after installation to remove air and restore optimal brake performance.

Quality Assurance and Warranty

Dorman manufactures this brake hydraulic hose to meet or exceed OEM standards for fit, form, and function. The use of treated steel fittings and EPDM rubber materials ensures durability and resistance to common brake system stresses. This part is backed by Dorman's quality assurance processes, providing confidence in its reliability for Audi A8 Quattro and S8 brake system repairs.