Sunsong 3404440 Power Steering Pressure Line Hose Assembly - Pump To Hydroboost

Sunsong 3404440 Power Steering Pressure Hose

The Sunsong 3404440 power steering pressure line hose assembly is built for pump-to-hydroboost applications on select Chevrolet Express and GMC Savana vans. It is engineered to meet demanding pressure requirements while maintaining an exact-fit layout for the listed vehicles.

• Fits 2003-2004 Chevrolet Express 1500, pump to hydroboost, w/o switchport
• Fits 2003-2004 Chevrolet Express 2500, pump to hydroboost, w/o switchport
• Fits 2003-2004 Chevrolet Express 3500, pump to hydroboost, w/o switchport
• Fits 2003-2004 GMC Savana 1500, pump to hydroboost, w/o switchport
• Fits 2003-2004 GMC Savana 2500, pump to hydroboost, w/o switchport
• Fits 2003-2004 GMC Savana 3500, pump to hydroboost, w/o switchport

Key Features

• Part number 3404440 for direct identification and ordering
• Male O-ring fittings: 16 mm end 1 and 18 mm end 2
• 59.2 in. (1504 mm) overall length
• No power steering switch port
• Steel tubing with zinc electroplated corrosion resistance
• Pressure-rated construction with a 1,500 psi max working pressure, 8,700 psi burst pressure, and 1,600 lb tensile strength
• Precision-engineered hose assembly for the listed pump-to-hydroboost routing

Detailed Description

Sunsong 3404440 is a power steering pressure hose assembly for 2003-2004 Chevrolet Express and GMC Savana vans equipped with pump-to-hydroboost steering. The hose uses male O-ring ends in 16 mm and 18 mm sizes and measures 59.2 inches long, making it a direct-match service part for the specified routing and configuration. Part number 3404440 is also cross-referenced to 25761642 for the same application.

Built with high-grade steel tubing and a zinc coating, this pressure line is made to resist rust and corrosion from humidity, road salt, water, and grime. The assembly is pressure tested before it leaves the factory, and the design follows the original hose layout for the listed Chevrolet Express and GMC Savana models.

What It Helps Fix

• Power steering fluid leaks from a worn or corroded pressure line
• Loss of steering assist caused by hose seepage or pressure loss
• Noise or stiffness in the steering system related to restricted fluid flow
• Damage from rust, road salt, or moisture exposure on the original hose
• Fitment issues when replacing a pump-to-hydroboost line on the listed vans

Installation Notes and Tips

Verify the vehicle uses the pump-to-hydroboost configuration and does not have a switch port before ordering. Confirm the 16 mm and 18 mm male O-ring connections and compare the routing length to the original hose before installation. Inspect adjacent seals, brackets, and mounting points for wear so the new hose can seat correctly and maintain proper system pressure.

Quality Assurance

Each Sunsong 3404440 hose is subjected to high-pressure testing before shipment to confirm pressure integrity and assembly quality. The construction is intended to restore the original hose function on the listed Chevrolet Express and GMC Savana applications while supporting long-term corrosion resistance.