Sunsong 3401958 Power Steering Pressure Line Hose Assembly

Power Steering Pressure Hose for Ford Trucks

The Sunsong 3401958 power steering pressure line hose assembly is built for direct replacement on select Ford truck applications. It is engineered to restore steering system pressure delivery with exact-fit construction and corrosion-resistant steel tubing.

Fits 1979 Ford F-150, N/A; Fits 1978-1979 Ford F-250, N/A; Fits 1979 Ford F-350, N/A.

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
• 23.3 in. overall length
• End fittings: 1/2 in. male inverted flare and 5/8 in. swivel O-ring
• CSM and steel hose construction
• Precision-engineered fit for select Ford F-150, Ford F-250, and Ford F-350 applications

Detailed Description

Sunsong 3401958 is a power steering pressure line hose assembly designed to replace the original pressure hose on select 1978-1979 Ford F-250, 1979 Ford F-150, and 1979 Ford F-350 applications. The hose is built to meet demanding steering-system pressure requirements, with steel tubing protected by zinc plating to resist humidity, road salt, water, and grime. Its exact-fit design supports proper routing and connection at the steering system, helping maintain consistent hydraulic pressure delivery.

This part cross-references Dayco 71038 and Gates 354420 for the same application. The Sunsong 3401958 part number is also referenced in interchange listings for related OE and aftermarket applications.

What It Helps Address

• Power steering fluid leaks from a worn pressure hose
• Loss of steering assist caused by pressure-line failure
• Corrosion-related hose deterioration on older Ford trucks
• Noise or erratic steering response from compromised hydraulic flow
• Fitment issues when replacing a damaged original hose assembly

Installation Notes and Tips

Verify the end fitting sizes and styles before installation: 1/2 in. male inverted flare on one end and 5/8 in. swivel O-ring on the other. Confirm the vehicle build date for 1979 Ford F-150 applications, as fitment applies to vehicles with manufacturing date from 5/1. Inspect the steering system for contamination, damaged seals, or worn components before installing the new hose. The 23.3 in. length should be matched to the original routing to avoid stress on the line.

Quality Assurance

Each Sunsong 3401958 hose is pressure tested before it leaves the factory. The assembly is engineered to exceed original equipment performance standards for pressure capacity and durability, with corrosion-resistant tubing intended to support long service life in demanding driving conditions.