Dorman H620858 Brake Hydraulic Hose - Rear Left Outer or Rear Right Outer

Reliable Brake Hydraulic Hose for BMW Models

The Dorman H620858 brake hydraulic hose is designed to provide dependable brake fluid transfer for select BMW vehicles. Engineered with durable materials, this flexible hose ensures consistent braking performance for models like the BMW 128i, 135i, 325i, 328i, 328i xDrive, 328xi, 330i, 335i, and 335xi.

• Compatible with multiple BMW models including 128i, 135i, 325i, 328i, 328i xDrive, 328xi, 330i, 335i, and 335xi
• Part number H620858 for precise identification and fitment
• Constructed with EPDM rubber hose material and a black rubber outer sleeve for flexibility and durability
• Ends feature treated steel fittings: male fitting with 10 mm thread diameter and female fitting with M10 x 1.0 inside diameter
• Overall hose length of 10.5 inches with included protective jacket

Durable Construction and Design Features

This Dorman brake hydraulic hose uses EPDM rubber for the hose material, 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 are equipped with treated steel fittings—male on one end and female on the other—ensuring secure connections to the brake system. The flexible hose design accommodates movement and vibration without compromising brake fluid integrity. The included jacket further protects the hose from wear and external damage.

Compatible BMW Models and Applications

The H620858 brake hydraulic hose is specifically compatible with a range of BMW vehicles, including the 128i, 135i, 325i, 328i, 328i xDrive, 328xi, 330i, 335i, and 335xi models. This part is ideal for owners seeking a direct replacement brake hose that meets OEM specifications for these vehicles.

Common Issues Addressed by This Brake Hose

• Brake fluid leaks caused by cracked or worn hoses
• Reduced braking performance due to hose swelling or internal damage
• Brake pedal softness or sponginess from compromised hydraulic lines
• Corrosion or damage to fittings leading to fluid loss
• Hose deterioration from exposure to heat and road debris

Installation Notes and Tips

• Ensure the vehicle is securely lifted and supported before beginning brake system work
• Carefully remove the old brake hose, noting the orientation of fittings
• Inspect brake lines and fittings for corrosion or damage before installing the new hose
• Use proper tools to avoid damaging the treated steel fittings during installation
• Bleed the brake system thoroughly after installation to remove air and ensure proper brake function

Quality Assurance and Warranty Information

Dorman manufactures the H620858 brake hydraulic hose to meet or exceed OEM standards for fit, form, and function. The use of EPDM rubber and treated steel fittings supports long-term durability and resistance to common brake system stresses. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in materials and workmanship to provide confidence in product reliability.