Sunsong 3402465 Power Steering Pressure Line Hose Assembly - Pump To Hydroboost

Power Steering Pressure Line Hose Assembly

Sunsong 3402465 is a power steering pressure line hose assembly for the pump-to-hydroboost circuit on select Ford Super Duty trucks. It is built for 2005-2007 Ford F-250 Super Duty and 2005-2007 Ford F-350 Super Duty applications, with 16 mm swivel O-ring fittings at both ends and a 39-inch overall length.

Engineered to meet demanding steering system pressure requirements, this hose assembly is built with CSM hose material and steel tubing with zinc electroplating for added resistance to corrosion from humidity, road salt, water, and grime. This part cross-references Dorman - HELP 80437 and Gates 363860 for the same application.

Key Features

• Fits 2005-2007 Ford F-250 Super Duty, pump to hydroboost
• Fits 2005-2007 Ford F-350 Super Duty, pump to hydroboost
• 16 mm swivel O-ring fittings on both ends
• 39 in. (990 mm) overall length
• CSM hose material for pressure-line service
• Steel tubing with zinc coating for corrosion resistance
• Part number: 3402465

Detailed Description

This Sunsong power steering pressure line hose assembly is a direct-fit replacement for the pump-to-hydroboost line used on 2005-2007 Ford F-250 Super Duty and Ford F-350 Super Duty trucks. The assembly is precision engineered to match the original routing and connection style, helping restore proper hydraulic flow between the power steering pump and hydroboost unit. Part number 3402465 is built to handle high-pressure steering service while maintaining the fit and connection points required for these Super Duty applications.

For buyers searching for a 2005-2007 Ford F-250 Super Duty power steering pressure hose or a 2005-2007 Ford F-350 Super Duty pump to hydroboost hose, this assembly provides the correct swivel O-ring end fittings and length for the listed vehicles. The zinc-coated steel tubing adds protection against common underbody exposure, while the CSM hose section supports long-term pressure-line use. Part number 3402465 is also referenced by interchange numbers used in the aftermarket.

Common Problems This Part Addresses

• Power steering fluid leaks at the pressure line
• Cracked, worn, or corroded hose sections
• Loss of steering assist from a damaged pump-to-hydroboost line
• Improper fit from a mismatched replacement hose
• Noise or pressure loss caused by a failing steering hose assembly

Installation Notes and Tips

Verify the vehicle application before installation, especially the pump-to-hydroboost routing and both 16 mm swivel O-ring connections. Inspect mating surfaces, brackets, and nearby components for wear or corrosion before installing the new hose. After installation, refill the system with the correct power steering fluid and check for leaks with the engine running and steering system operating.

Quality Assurance

Each Sunsong pressure hose is pressure tested before it leaves the factory to help ensure proper operation after installation. The hose construction is specified to exceed original equipment performance standards, with a 1,500 psi maximum working pressure, 8,700 psi burst pressure rating, and 1,600 lb tensile strength.