Dorman Brake Hydraulic Hose H620779 — Front Driver Side, EPDM Rubber & Plated Fittings

This brake hose is built to match original equipment routing and performance for a range of Chevrolet, GMC and Cadillac models. Manufactured with durable EPDM rubber and corrosion-resistant fittings, the hose is intended for use when replacing a worn, cracked, or leaking flexible brake line as part of a complete brake repair. Before ordering, confirm fitment by entering your vehicle make, model and trim in the garage tool to ensure the hose matches your vehicle's year and front-left position.

Which vehicles is this hose compatible with?

The Dorman H620779 fits many GM full-size trucks and SUVs across model years. It covers front driver-side applications for multiple Chevrolet, GMC and Cadillac models—verify vehicle selection to avoid mismatches.

• Cadillac Escalade, Escalade ESV and EXT models (various years 2007–2020 depending on model)
• Chevrolet Silverado, Tahoe, Suburban, Avalanche and select Silverado 1500 LD years
• GMC Sierra, Sierra 1500 Limited, Yukon and Yukon XL model years listed in the fitment tool
• Use the site garage tool with your exact trim to confirm fit before purchase

How does this hose match the original part?

This Dorman hose is engineered to match the original hose’s dimensions, fittings and bend radii so it installs in the same routing without additional modification. Position-specific manufacturing helps ensure the connection points and mounting are consistent with factory expectations.

• Built to the original routing and length required for front-left position
• Ends and fittings styled to mate with existing brake lines and calipers
• Manufactured to comply with regulated safety and durability standards
• Reduces need for adapter fittings or custom bending during install

What materials and construction features enhance durability?

The hose uses EPDM rubber for the flexible line and protective coatings on metal fittings to resist corrosion in road and weather exposure. That combination helps maintain fluid integrity and prevents premature failure from environmental factors.

• EPDM rubber flex line resists heat, ozone and hydraulic fluid breakdown
• Corrosion-resistant plated fittings protect connection points
• Factory-style crimps and reinforcements for consistent pressure containment
• Meets government-regulated testing for brake hose performance

Is this hose easy for a DIY install or does it require professional service?

For mechanically inclined owners, the hose is designed for straightforward replacement using standard brake-line tools; however, brake system work requires care and proper bleeding of the system after installation. If you’re unsure about brake-line connections, thread sizes, or bleeding procedure, professional installation is recommended for safety.

• Position-specific fit simplifies alignment and mounting for DIY jobs
• Requires common tools: flare wrench, line clamps, and brake-bleeding kit
• System bleeding and torque specifications are critical for safe operation
• If in doubt, have a qualified technician complete the replacement and bleed

Who this is for: The Dorman H620779 is aimed at owners and mechanics working on GM full-size trucks and SUVs who need a reliable, position-specific front driver-side brake hose replacement. It suits DIYers comfortable with brake-line replacement and professional shops needing a direct-fit part to restore brake hydraulic integrity without rerouting or custom adapters.