Sunsong 3402123 Power Steering Pressure Line Hose Assembly - Pump To Hydroboost

Sunsong 3402123 Power Steering Pressure Line Hose

The Sunsong 3402123 power steering pressure line hose assembly is built for pressure-side steering service on select Chevrolet P30 and GMC P3500 motorhome applications. It is engineered to meet demanding hydraulic requirements with OE-style fitment details for pump-to-hydroboost and non-hydroboost configurations.

• Fits 1983-1989 Chevrolet P30, pump to hydroboost, w/ Hydroboost, Motor Home
• Fits 1983-1989 GMC P3500, pump to hydroboost, Motorhome
• Fits 1980-1982 Chevrolet P30, N/A, w/o Hydroboost, Motor Home
• Fits 1980-1982 GMC P3500, N/A, Motorhome
• Male O-ring fittings: 16 mm end 1 and 18 mm end 2
• 40.8 in. hose length for pressure-line routing
• CSM hose material for hydraulic durability
• High-grade steel tubing with zinc electroplating for corrosion resistance

Built for Pressure-Line Performance

This pressure steering hose is designed around the original routing and connection points used on Chevrolet P30 and GMC P3500 chassis applications. Sunsong 3402123 is rated for a 1,500 psi maximum working pressure, 8,700 psi burst pressure, and 1,600 lb tensile strength, giving it the pressure capacity expected in power steering pressure line service. This part cross-references Gates 361770 for the same application.

Common Problems This Hose Can Address

• Leaking power steering pressure line connections
• Cracked or hardened hose material from age and heat
• Corrosion on steel tubing from road salt, moisture, and grime
• Restricted steering assist caused by a failing pressure hose
• Hydraulic fluid loss at the pump-to-hydroboost line

Installation Notes and Tips

Confirm the vehicle’s steering configuration before ordering, since this part is listed for both pump-to-hydroboost and non-hydroboost applications. Match the 16 mm and 18 mm male O-ring ends to the existing fittings, and verify hose routing against the original line length and mounting path on the Chevrolet P30 or GMC P3500. The hose is precision engineered to exact fit, but proper alignment during installation is important to avoid twist, contact, or stress on the line.

Quality Assurance

Each Sunsong pressure hose is high-pressure tested before it leaves the factory to help ensure consistent operation after installation. The steel tubing is zinc electroplated for added resistance to rust and corrosion in harsh driving conditions.