Sunsong 3401788 Power Steering Pressure Line Hose Assembly - From Pump

Power Steering Pressure Line Hose Assembly

Sunsong 3401788 is a power steering pressure line hose assembly built for direct replacement on select Chevrolet and GMC trucks and SUVs. It is engineered for the pressure side of the steering system and is specified for applications such as the Chevrolet S10 and GMC Sonoma, with fitment covering 1987-1993 model years in the listed positions.

Key Features

• Pressure hose assembly for the power steering system
• End fittings: 16 mm male O-ring at both ends
• Hose material: CSM
• Length: 26.9 in. (683 mm)
• Maximum working pressure: 1,500 psi
• Burst pressure rating: 8,700 psi
• Tensile strength: 1,600 lb
• High-grade steel tubing with zinc electroplating for corrosion resistance
• Precision-engineered for exact fit on listed applications

Detailed Description

This Sunsong power steering pressure line hose assembly is built to restore proper hydraulic flow in the steering system while matching the original routing and connection style of the vehicle. The 3401788 uses 16 mm male O-ring fittings on both ends and a 26.9-inch hose length, making it a direct-fit replacement for listed Chevrolet S10, Chevrolet S10 Blazer, GMC Sonoma, GMC S15, and GMC S15 Jimmy applications. It is manufactured to exceed original equipment performance standards with pressure capacity and durability specifications suited for demanding steering service.

For corrosion resistance, the tubing is made from high-grade steel with a zinc coating to help protect against humidity, road salt, water, and grime. Sunsong 3401788 is also precision engineered to restore wearable parts to original condition where required by the application. This part cross-references Gates 358550 and Walker Exhaust 70414 for the same application.

Vehicle Fitment

• Fits 1987-1993 Chevrolet S10, From Pump
• Fits 1987-1988 Chevrolet S10 Blazer, From Pump
• Fits 1991-1993 GMC Sonoma, From Pump
• Fits 1987-1990 GMC S15, From Pump
• Fits 1987-1988 GMC S15 Jimmy, From Pump

What It Helps Fix

• Power steering fluid leaks at the pressure line
• Loss of steering assist from a damaged hose
• Noise or stiffness caused by restricted hydraulic flow
• Corrosion-related hose or tube deterioration
• Fitment issues from an incorrect replacement line

Installation Notes and Tips

Verify the vehicle’s steering line routing, end fitting size, and pump-side connection before installation. This hose is listed for the From Pump position, so match the original configuration on the vehicle before ordering. Inspect related seals, clamps, and mounting points for wear, and confirm that the system is clean before refilling and bleeding the power steering system.

Quality Assurance

Each hose is high-pressure tested before it leaves the factory to help ensure proper operation and installation on the listed applications. Sunsong 3401788 is built to meet demanding steering-system service requirements and to provide consistent performance on compatible Chevrolet and GMC models.