Sunsong 3401072 Power Steering Pressure Line Hose Assembly - To Gear or To Rack

Power Steering Pressure Line Hose for GM Applications

Sunsong 3401072 is a power steering pressure line hose assembly built for select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. It is engineered for direct-fit replacement on applications such as the Buick Skylark, Chevrolet Corsica, Oldsmobile Achieva, Pontiac Grand Am, and Pontiac Tempest.

With OE-style end fittings, a switch port, and corrosion-resistant steel tubing, this hose is made to restore steering system function on the original vehicle routing. The 3401072 part number is a direct reference for shoppers looking for a pressure hose assembly with application-specific fitment.

Key Features

• Pressure line hose assembly for power steering systems
• Max working pressure: 1,500 psi
• Burst pressure rating: 8,700 psi
• Tensile strength: 1,600 lb
• High-grade steel tubing with zinc electroplating for rust and corrosion resistance
• End 1: 16 mm female O-ring
• End 2: 18 mm male O-ring
• Hose material: CSM
• Length: 28.2 in. (715 mm)
• Includes PS switch port

Detailed Description

Sunsong 3401072 is a power steering pressure line hose assembly designed to replace worn or leaking pressure lines in select GM steering systems. The hose is built to exceed original equipment performance standards, with pressure capacity and tensile strength specified for demanding steering operation. Its steel tubing is zinc coated to help resist corrosion from humidity, road salt, water, and grime, which is important for vehicles exposed to harsh underbody conditions.

This part number 3401072 is engineered for exact fitment and includes a PS switch port for the correct application. It is listed for 1994-1998 Buick Skylark, 1992-1996 Chevrolet Corsica, 1989-1991 Pontiac Tempest, 1994-1998 Oldsmobile Achieva, and 1994-1998 Pontiac Grand Am. This part cross-references Gates 360990 for the same application.

What It Helps Fix

• Power steering fluid leaks from a damaged pressure hose
• Hard or inconsistent steering effort caused by pressure loss
• Corrosion-related hose deterioration on exposed steering lines
• Incorrect hose routing or fitment after prior replacement
• Steering system warning issues on applications with a switch port

Installation Notes and Tips

Verify end fitting sizes, hose length, and switch-port configuration before installation. This hose uses a 16 mm female O-ring on one end and an 18 mm male O-ring on the other, so matching the original routing and connection style is important for proper sealing. The listed fitments include vehicles with switch-port and block-off-plug variations, so confirm the original hose design against the vehicle build details before ordering.

• Fits 1994-1998 Buick Skylark, to gear, w/ switch port (contains block-off plug for non switch port applications)
• Fits 1994-1998 Oldsmobile Achieva, to gear, w/ switch port (contains block-off plug for non switch port applications)
• Fits 1994-1998 Pontiac Grand Am, to gear, w/ switch port (contains block-off plug for non switch port applications)
• Fits 1992-1996 Chevrolet Corsica, to gear, w/ switch port (contains block-off plug for non switch port applications)
• Fits 1989-1990 Chevrolet Corsica, to gear, w/ switch port (contains block-off plug for non switch port applications)
• Fits 1991 Chevrolet Corsica, to gear, 1st design, w/ switch port at pump end (contains block-off plug for non switch port applications)
• Fits 1989-1991 Pontiac Tempest, to rack
• Fits 1988 Chevrolet Corsica, to gear, from VIN #500001, w/ switch port (contains block-off plug for non switch port applications)
• Fits 1988 Pontiac Tempest, to rack, from VIN 500001

Quality Assurance

Each Sunsong pressure hose is high-pressure tested before leaving the factory to confirm proper operation and installation readiness. The hose assembly is built to restore the original steering line function on the listed Buick, Chevrolet, Oldsmobile, and Pontiac applications.