Sunsong 3401934 Power Steering Pressure Line Hose Assembly

Power Steering Pressure Line for Toyota 4Runner and Pickup

Sunsong 3401934 is a power steering pressure line hose assembly built for select 1988-1989 Toyota applications. It is engineered to meet demanding pressure requirements and restore steering system function on the listed Toyota 4Runner and Toyota Pickup models.

Key Features

• Fits 1989 Toyota 4Runner, N/A, to 3/31; 1988 Toyota 4Runner, N/A; and 1988 Toyota Pickup, N/A
• Banjo end fitting on one side and 16 mm male inverted flare on the other
• 58.9 in. overall length for the specified steering routing
• CSM hose material with steel tubing construction
• Rated for 1,500 psi maximum working pressure, 8,700 psi burst pressure, and 1,600 lb tensile strength
• Zinc-coated steel tubing for added resistance to corrosion, rust, humidity, road salt, water, and grime
• High-pressure tested before leaving the factory

Detailed Description

This Sunsong power steering pressure line hose assembly, part number 3401934, is a direct-fit replacement for the listed Toyota 4Runner and Toyota Pickup applications. The hose is precision engineered to match the original routing and connection points, helping restore proper hydraulic pressure transfer in the steering system. Sunsong 3401934 uses high-grade steel tubing with protective zinc plating and a CSM hose section to support durability in harsh underhood and road conditions.

This part cross-references Gates 369990 for the same application.

Common Steering Issues It Can Address

• Power steering fluid leaks at the pressure line
• Loss of steering assist from a damaged hose assembly
• Corrosion-related hose or tube deterioration
• Pressure loss caused by cracked, worn, or fatigued steering lines
• Noisy or inconsistent steering operation linked to a failing pressure hose

Installation Notes and Tips

Confirm the vehicle application before installation, especially on 1989 Toyota 4Runner models noted through 3/31. Inspect the mating fittings, routing path, and surrounding components for wear or contamination before replacing the hose. Properly torque the banjo and flare connections and verify the system is filled and bled according to service procedures after installation.

Quality Assurance

Each hose is pressure tested at the factory before shipment. Sunsong states that this assembly is engineered to exceed original equipment performance standards in pressure capacity and durability.