Dorman H621708 Brake Hydraulic Hose - Rear Left, Rear Left Outer, Rear Right or Rear Right Outer

Reliable Brake Hydraulic Hose for BMW Vehicles

The Dorman H621708 brake hydraulic hose is designed to provide dependable brake fluid transfer for a wide range of BMW models. Engineered with durable materials, this flexible hose ensures consistent braking performance and safety.

• Compatible with multiple BMW models including 120i, 328i, 335i, 440i, and X1
• Constructed with EPDM rubber hose material and a black rubber outer sleeve
• Features treated steel fittings: male end 1 and female end 2 with M10 x 1.0 thread diameter
• Overall length of 10.25 inches for precise fitment
• Includes one brake hydraulic hose per package without mounting hardware or brackets

Durable Construction and Precise Fitment

This Dorman brake hydraulic hose (part number H621708) 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 feature treated steel fittings with M10 x 1.0 thread diameters, ensuring secure connections to your vehicle’s brake system. The flexible hose design accommodates movement and vibration, maintaining brake fluid integrity under various driving conditions.

Compatible BMW Models and Applications

This brake hose is compatible with a broad range of BMW vehicles, including but not limited to the 120i, 128i, 135i, 220i, 230i, 318i, 320i, 328d, 328i, 330i, 335i, 340i, 420i, 428i, 430i, 435i, 440i, ActiveHybrid 3, M140i, M235i, M240i, and X1 models. It is designed to meet the specific hydraulic requirements of these vehicles, ensuring proper brake fluid flow and system reliability.

Common Issues Addressed by This Brake Hose

• Prevents brake fluid leaks caused by cracked or worn hoses
• Eliminates spongy or unresponsive brake pedal feel due to hose failure
• Resolves brake system pressure loss from damaged fittings or hose deterioration
• Replaces hoses compromised by heat or environmental exposure
• Restores proper brake fluid transfer for safe vehicle operation

Installation Notes and Tips

Installation of the Dorman H621708 brake hydraulic hose requires basic mechanical skills and proper tools. Ensure the vehicle is securely lifted and supported before beginning. Carefully remove the old hose, taking note of the orientation and fitting types. Use a flare nut wrench to avoid damaging the treated steel fittings during removal and installation. After installing the new hose, bleed the brake system thoroughly to remove air and verify proper brake function before driving.

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, supporting reliable performance for your BMW brake system.