Dorman H621689 Brake Hydraulic Hose - Front Left or Front Right

Reliable Brake Hydraulic Hose for Mercedes-Benz Models

The Dorman H621689 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 for models like the CLS400, CLS450, CLS550, E350, and E550.

• Compatible with Mercedes-Benz CLS400, CLS450, CLS550, E350, and E550
• Overall length of 21 inches for precise fitment
• Constructed with EPDM rubber hose material and a rubber outer sleeve
• Equipped with treated steel fittings: male end 1 and female end 2
• Includes a protective jacket for added durability
• End 1 and End 2 fittings feature M10 x 1.0 thread diameter
• Flexible hose design for ease of installation and reliable fluid transfer

Durable Construction and Design Features

This Dorman brake hydraulic hose (part number H621689) is built with EPDM rubber, known for its resistance to 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 feature treated steel fittings, with a male fitting on end 1 and a female fitting on end 2, each with an M10 x 1.0 thread diameter to ensure secure connections. The included jacket enhances the hose's durability, making it suitable for the demanding conditions of braking systems in Mercedes-Benz CLS and E-Class models.

Applications and Problem Resolution

This brake hydraulic hose is intended for use in the hydraulic brake system of compatible Mercedes-Benz vehicles. It addresses several common issues:

• Prevents brake fluid leaks caused by worn or cracked hoses
• Restores proper brake pressure and pedal feel
• Eliminates hose swelling or bulging under pressure
• Replaces damaged or corroded fittings for secure brake line connections
• Ensures consistent brake fluid flow for safe braking performance

Installation Notes and Tips

When installing the Dorman H621689 brake hydraulic hose, ensure the vehicle is securely lifted and the brake system is depressurized. Carefully remove the old hose, avoiding contamination of the brake fluid. Verify that the M10 x 1.0 fittings match the vehicle’s brake line connections. After installation, bleed the brake system thoroughly to remove air and restore proper brake function. No mounting hardware or brackets are included, so reuse existing components or source separately if needed.

Quality Assurance and Warranty

Dorman manufactures this brake hydraulic hose to meet or exceed OEM specifications 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, Dorman products typically come with a limited warranty against defects in material and workmanship, offering confidence in the product’s reliability for Mercedes-Benz CLS400, CLS450, CLS550, E350, and E550 models.