Sunsong 3405124 Power Steering Return Line Hose Assembly - Hydroboost To Reservoir

Power Steering Return Hose for Super Duty Applications

Sunsong 3405124 is a power steering return line hose assembly built for low-pressure, high-temperature return flow in the steering system. It is engineered for direct replacement use on select Ford Super Duty trucks and is specified for the hydroboost-to-reservoir routing on 2008-2010 Ford F-250 Super Duty and 2008-2010 Ford F-350 Super Duty.

Key Features

• Direct-fit power steering return line hose assembly for the hydroboost to reservoir circuit
• CSM hose material for durability in steering return applications
• Rated for a maximum working pressure of 250 psi
• Built for low-pressure, high-temperature operation
• End 1 fitting type: ID hose, 9.6 mm fitting size
• End 2 fitting type: ID hose, 9.6 mm fitting size
• Compatible with 2008-2010 Ford F-250 Super Duty and 2008-2010 Ford F-350 Super Duty

Detailed Description

This Sunsong power steering return line hose assembly, part number 3405124, is designed for the return side of the steering system where fluid is routed from the hydroboost unit back to the reservoir. It is a fitment-specific replacement for Ford F-250 Super Duty and Ford F-350 Super Duty trucks from 2008 through 2010, with application coverage listed for the hydroboost to reservoir position. The hose is made from CSM material and is rated to handle up to 250 psi in low-pressure, high-temperature service.

This part cross-references Dorman - HELP 81139 and Gates 352766 for the same application. If you are searching for a power steering return hose for 2008-2010 Ford F-250 Super Duty or 2008-2010 Ford F-350 Super Duty, Sunsong 3405124 provides a direct replacement option with the specified hose-end configuration.

Common Repair Uses

• Replacing a leaking or cracked power steering return hose
• Restoring fluid transfer between the hydroboost unit and reservoir
• Addressing steering fluid seepage at hose connections
• Repairing worn return-line hose material on Ford Super Duty trucks
• Correcting loss of steering assist caused by return-side hose failure

Installation Notes and Tips

Verify the vehicle application and routing before installation. This hose uses ID hose ends with 9.6 mm fitting sizes, so confirm the connection points on the hydroboost-to-reservoir line match the original configuration. Inspect adjacent steering components, clamps, and reservoir connections for wear or contamination before completing the repair. For best results, flush the power steering system if fluid contamination or hose deterioration is present.

Quality Assurance

Sunsong states that its return hoses are engineered to exceed original equipment performance standards and are built for corrosion resistance in demanding underhood and road conditions. The tubing is manufactured from high-grade steel with a zinc electroplated coating to help resist rust and corrosion from humidity, road salt, water, and grime. Part number 3405124 is manufactured to exact-fit specifications for the listed Ford Super Duty applications.