Dorman H621178 Brake Hydraulic Hose - Rear Left or Rear Right

Reliable Brake Hydraulic Hose for Mercedes-Benz Models

The Dorman H621178 brake hydraulic hose is designed to provide dependable brake fluid transfer for select Mercedes-Benz vehicles. Engineered with durable materials, this flexible hose ensures consistent braking performance and safety.

• Compatible with Mercedes-Benz C63 AMG, C250, C300, C350, E350, E400, E550, GLK250, GLK300, GLK350, SL55 AMG, SL63 AMG, SL65 AMG, SL500, SL550, and SL600 models
• Overall length of 13 inches for precise fitment
• Constructed with EPDM rubber hose material for flexibility and durability
• Outer sleeve made of steel for added protection
• Ends feature treated steel fittings: male fitting with 10 mm thread diameter and female fitting with M10 x 1.0 inside diameter
• Includes a protective jacket to enhance hose longevity
• Flexible hose design to accommodate vehicle movement and vibration

Durable Construction and Precise Fitment

The Dorman H621178 brake hydraulic hose is built with high-quality EPDM rubber, known for its resistance to heat, ozone, and brake fluid degradation. The steel outer sleeve provides additional protection against abrasion and environmental damage. Both ends of the hose feature treated steel fittings—male on one end and female on the other—ensuring secure connections within the brake system. With an overall length of 13 inches, this hose is engineered to fit a range of Mercedes-Benz models including the C-Class, E-Class, GLK, and SL series, maintaining proper brake fluid flow and system integrity.

Applications and Problem Resolution

• Replaces worn or cracked brake hydraulic hoses causing brake fluid leaks
• Restores proper brake pressure and pedal feel compromised by damaged hoses
• Prevents brake system failure due to hose deterioration or swelling
• Eliminates brake fluid contamination risks from compromised hose materials
• Addresses fitment issues in Mercedes-Benz C63 AMG, SL63 AMG, and other compatible models

Installation Notes and Tips

• Ensure brake system is depressurized before removing the old hose
• Verify the hose length and fitting types match the vehicle’s specifications
• Use appropriate tools to avoid damaging treated steel fittings during installation
• Bleed the brake system thoroughly after installation to remove air pockets
• Inspect mounting points and hardware for wear; note that this hose does not include mounting brackets or hardware

Quality Assurance and Warranty

Dorman manufactures the H621178 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 under demanding conditions. While mounting hardware and brackets are not included, the hose is designed for direct replacement on specified Mercedes-Benz models. Please refer to Dorman’s warranty policy for coverage details.