Dorman H620451 Brake Hydraulic Hose - Rear Center Left, Rear Left Inner or Rear Right Inner

Brand Dorman H620451
Position Rear Left Inner, Rear Center Left, and Rear Right Inner
Color Black
Outer Sleeve Material Rubber
Mounting Hardware Included No
Bracket Included No
Gasket Or Seal Included No
End 1 Fitting Material Treated steel
End 1 Fitting Type Female
End 2 Fitting Material Treated steel
End 2 Fitting Type Female
Overall Length 15.5
Jacket Included No
Describe Type Flexible hose
End 1 Thread Diameter 7/16 in-24
End 2 Fitting Inside Diameter 3/8 in-24
Hose Material Epdm rubber
Package Contents 1 brake hose
Fits Cadillac, Chevrolet, and GMC · 27 vehicles

OE-style replacement. Precision-engineered to match original fit, function, and performance.

Flexible hose design. EPDM rubber construction helps deliver reliable brake fluid transfer.

Treated steel fittings. Female ends provide a secure, durable connection.

Cross-references Centric Parts 150.66357, Raybestos Brakes BH382691 and Sunsong 2204592 for the same application. See all 5.

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Dorman H620451 Brake Hydraulic Hose

This Dorman brake hydraulic hose is engineered as a direct replacement for the original hose on specific Cadillac, Chevrolet, and GMC applications. Built with EPDM rubber and treated steel female fittings, it is made for the rear left inner position on select vehicles, including 2004-2006 Cadillac Escalade and 2006 Chevrolet Tahoe brake hose applications.

Key Features

  • Direct replacement brake hydraulic hose for specific rear brake positions
  • EPDM rubber hose material with a black outer sleeve
  • Treated steel fittings on both ends for secure brake line connection
  • Flexible hose design for routing in confined chassis locations
  • Overall length: 15.5 in.
  • End 1 thread diameter: 7/16 in-24; End 2 fitting inside diameter: 3/8 in-24
  • Fits select Cadillac Escalade, Chevrolet Avalanche 1500, Suburban 1500, Tahoe, and GMC Yukon models

Detailed Description

Dorman H620451 is a brake hydraulic hose designed to match the fit, function, and performance of the original hose on specific vehicles and positions. It uses rubber hose construction with treated steel female fittings at both ends, helping maintain proper brake fluid transfer in rear brake circuits. This part number H620451 is listed for rear left inner applications on 2004-2006 Cadillac Escalade, Escalade ESV, and Escalade EXT, plus select 2004-2006 Chevrolet and GMC full-size SUV models. This part cross-references Centric Parts 150.66357 for the same application.

What This Brake Hose Helps Address

  • Cracked or deteriorated brake hose rubber
  • Brake fluid seepage at the hose ends
  • Restricted brake fluid flow from an aged flexible line
  • Soft, damaged, or corroded original rear brake hose assemblies
  • Brake service needs on rear left inner hydraulic brake circuits

Installation Notes and Tips

Verify the vehicle year, make, model, and rear position before ordering. This hose is listed for rear left inner use on most applications, with specific notes for Active Brake Control and hydraulic brake configurations on certain Chevrolet, Cadillac, and GMC models. Mounting hardware, brackets, and seals are not included, so reuse or replace related components as needed during brake service. Always inspect the full brake system, bleed the brakes after installation, and confirm proper hose routing and clearance.

Quality Assurance

Dorman manufactures this brake hose to match original equipment fit and function for the listed applications. The H620451 is built for safe, long-lasting durability as part of a complete brake repair on the specified Cadillac Escalade, Chevrolet Tahoe, and GMC Yukon platforms.

This part fits 27 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersPositionNotes
2006CadillacEscalade———Rear Left InnerBrake Master Cylinder - not for use with Active Brake Control.
2006CadillacEscalade ESV———Rear Left InnerBrake Master Cylinder - not for use with Active Brake Control.
2006CadillacEscalade EXT———Rear Left InnerBrake Master Cylinder - not for use with Active Brake Control.
2006ChevroletAvalanche 1500———Rear Left InnerFits vehicles with RPO Code JL4 (Active Brake Control)
2006ChevroletSuburban 1500—5.3LV8Rear Left InnerCompatible with vehicles equipped with Active Brake Control.
2006ChevroletTahoe———Rear Left InnerCompatible with vehicles equipped with Active Brake Control.
2006GMCYukon———Rear Left InnerCompatible with vehicles equipped with Active Brake Control.
2006GMCYukon XL 1500—5.3LV8Rear Left InnerCompatible with vehicles equipped with Active Brake Control.
2005CadillacEscalade———Rear Left InnerBrake Master Cylinder - not for use with Active Brake Control.
2005CadillacEscalade ESV———Rear Left InnerBrake Master Cylinder - not for use with Active Brake Control.
2005CadillacEscalade EXT———Rear Left InnerBrake Master Cylinder - not for use with Active Brake Control.
2005ChevroletAvalanche 1500———Rear Left Innerwo/Active Brake Control; Hydraulic Brakes
2005ChevroletSuburban 1500—5.3LV8Rear Left InnerHydraulic Brakes
2005ChevroletTahoe———Rear Center LeftCompatible with vehicles equipped with Active Brake Control.
2005GMCYukon———Rear Center LeftCompatible with vehicles equipped with Active Brake Control.
2005GMCYukon XL 1500SLT5.3LV8Rear Left InnerHydraulic Brakes
2005GMCYukon XL 1500SLE5.3LV8Rear Left InnerHydraulic Brakes
2005GMCYukon XL 1500Denali——Rear Left Innerw/2 Wheel Steering
2005GMCYukon XL 1500Denali——Rear Right Innerw/2 Wheel Steering
2004CadillacEscalade———Rear Left InnerBrake Master Cylinder - not for use with Active Brake Control.
2004CadillacEscalade ESV———Rear Left InnerBrake Master Cylinder - not for use with Active Brake Control.
2004CadillacEscalade EXT———Rear Left InnerBrake Master Cylinder - not for use with Active Brake Control.
2004ChevroletAvalanche 1500———Rear Left Innerwo/Active Brake Control; Hydraulic Brakes
2004ChevroletSuburban 1500—5.3LV8Rear Left InnerHydraulic Brakes
2004ChevroletTahoe———Rear Center LeftCompatible with vehicles equipped with Active Brake Control.
2004GMCYukon———Rear Center LeftCompatible with vehicles equipped with Active Brake Control.
2004GMCYukon XL 1500—5.3LV8Rear Left InnerHydraulic Brakes
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Centric Parts — 150.66357Raybestos Brakes — BH382691Sunsong — 220459215186902BH144048