Dorman H621688 Brake Hydraulic Hose - Rear Left or Rear Right

Reliable Brake Hydraulic Hose for Mercedes-Benz Vehicles

The Dorman H621688 brake hydraulic hose is engineered to provide dependable brake fluid transfer for select Mercedes-Benz models. Designed as a flexible hose with treated steel fittings, it ensures secure and efficient braking performance for vehicles like the CLS63 AMG and E350.

• Compatible with Mercedes-Benz CLS63 AMG, CLS400, E63 AMG, E350, and other models
• Durable black EPDM rubber hose material with a protective rubber outer sleeve
• Flexible hose design for ease of installation and reliable fluid flow
• Treated steel male and female fittings with M10 x 1.0 thread diameter
• Overall length of 15 inches with an included protective jacket

Durable Construction and Precise Fitment

This Dorman brake hydraulic hose (part number H621688) features a flexible EPDM rubber hose core that resists heat, ozone, and brake fluid degradation. The black rubber outer sleeve adds an extra layer of protection against abrasion and environmental exposure. Both ends are equipped with treated steel fittings—male on one end and female on the other—each with an M10 x 1.0 thread diameter to ensure a secure connection. The 15-inch overall length and included jacket make this hose suitable for specific Mercedes-Benz models, including the CLS450, E500, and E550.

Applications and Common Issues Addressed

• Replacement of worn or cracked brake hydraulic hoses
• Resolving brake fluid leaks caused by damaged fittings or hose material
• Restoring proper brake pressure and pedal feel
• Addressing hose swelling or bulging under pressure
• Maintaining brake system integrity on Mercedes-Benz CLS and E-Class models

Installation Notes and Tips

Ensure the brake system is depressurized before removing the old hose. Verify the thread size and fitting types match your vehicle’s specifications. Since mounting hardware and brackets are not included, retain or replace existing components as needed. Properly torque fittings to manufacturer specifications to prevent leaks. Bleed the brake system thoroughly after installation to remove air and restore optimal braking performance.

Quality Assurance and Warranty

Dorman brake hydraulic hoses are manufactured to meet or exceed OEM standards for fit, form, and function. The H621688 part undergoes rigorous quality control to ensure durability and reliability in demanding braking applications. While specific warranty details are not provided, Dorman products typically come with a limited warranty against defects in material and workmanship.