Sunsong 3402464 Power Steering Pressure Line Hose Assembly - Pump To Hydroboost

Power Steering Pressure Line for Hydroboost Systems

Sunsong 3402464 is a power steering pressure line hose assembly built for hydroboost-equipped Chevrolet Express and GMC Savana vans. It is engineered for direct-fit service on the pump to hydroboost routing and uses male O-ring fittings for a secure connection.

With a 54.6-inch hose length, 16 mm end 1 fitting, 18 mm end 2 fitting, and a pressure switch port, this hose assembly supports the factory steering and brake-assist layout found on select Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, and GMC Savana 3500 applications.

Key Features

• Part number 3402464 power steering pressure line hose assembly
• Fits pump to hydroboost applications on select Chevrolet Express and GMC Savana vans
• Male O-ring fittings: 16 mm end 1 and 18 mm end 2
• 54.6 in. (1386 mm) hose length for the listed routing
• CSM hose material for fluid-handling durability
• Includes a pressure switch port
• Built with steel tubing and zinc-plated corrosion-resistant protection
• High-pressure tested before shipment

Detailed Description

Sunsong 3402464 is a replacement power steering pressure hose assembly for hydroboost systems used on 2006-2010 Chevrolet Express 2500 and Express 3500, plus 2006-2010 GMC Savana 2500 and Savana 3500. It also fits 2006 Chevrolet Express 2500 and Express 3500 hydroboost applications with the noted return line end fitting requirement. This part cross-references Four Seasons 55210 and Gates 365738 for the same application.

The hose assembly is built to meet demanding steering-system pressure requirements, with a maximum working pressure of 1,500 psi, burst pressure rated at 8,700 psi, and tensile strength of 1,600 lb. Sunsong also uses high-grade steel tubing with zinc electroplating to help resist rust and corrosion from humidity, road salt, water, and grime. Part number 3402464 is precision engineered for the listed routing and connection points.

What It Helps Fix

• Power steering fluid leaks at the pressure line
• Loss of steering assist from a damaged hose
• Hydroboost pressure line wear on Chevrolet Express and GMC Savana vans
• Corrosion-related hose or tube deterioration
• Improper sealing at male O-ring connection points

Installation Notes

Verify the vehicle uses a hydroboost system before ordering. Match the pump-to-hydroboost routing, fitting sizes, and pressure switch port configuration to the original hose. For 2006 Chevrolet Express 2500 and Express 3500 applications, confirm the return line end fitting requirement noted in fitment. Inspect surrounding brackets, grommets, heat shields, bushings, and sleeves during service and replace worn components as needed to restore the system to original condition.

Quality Assurance

Each Sunsong 3402464 hose is high-pressure tested at the factory before it leaves production. The assembly is engineered to restore original routing and connection geometry for the listed Chevrolet Express and GMC Savana hydroboost applications.