Sunsong 3401790 Power Steering Cylinder Line Hose Assembly - Cylinder

Sunsong 3401790 Power Steering Cylinder Line Hose

The Sunsong 3401790 power steering cylinder line hose assembly is built for direct replacement on select Lincoln and Mercury applications. It is engineered to restore steering hydraulic flow with OE-style fitment and durable construction for long-term service.

Key Features

• Fits 1976 Mercury Monarch, cylinder, from 4/5, with O-ring fitting
• Fits 1977-1980 Mercury Monarch, cylinder
• Fits 1977-1980 Lincoln Versailles, cylinder
• 1/2 in. male O-ring fittings on both ends
• 11 in. overall length for the specified application
• CSM hose material for hydraulic durability
• High-grade steel tubing with zinc coating for corrosion resistance
• Pressure-rated to 1,500 psi working pressure and 8,700 psi burst pressure

Detailed Description

This power steering cylinder line hose assembly is designed to replace the original line on compatible Lincoln Versailles and Mercury Monarch vehicles. Sunsong 3401790 uses precision-engineered dimensions, 1/2 in. male O-ring ends, and an 11 in. length to match the listed steering cylinder applications. The hose construction combines CSM material with steel tubing protected by zinc plating, helping resist rust, road salt, moisture, and grime in demanding underhood and chassis environments. Sunsong 3401790 is also pressure tested before it leaves the factory to support consistent operation after installation.

This part cross-references Gates 355600 for the same application.

What It Helps Address

• Power steering fluid leaks at the cylinder line hose
• Loss of steering assist from a damaged hydraulic line
• Corrosion-related hose or tube deterioration
• Improper sealing at O-ring style fittings
• Steering noise or erratic assist caused by restricted fluid flow

Installation Notes and Tips

Confirm the vehicle uses the listed cylinder application and O-ring fitting style before installation. Inspect mating surfaces, seals, and surrounding steering components for wear or contamination, and replace any damaged sealing surfaces as needed. Verify routing and clearance so the hose does not contact hot or moving parts.

Quality Assurance

Each Sunsong 3401790 hose is pressure tested at the factory to help ensure proper sealing and operation. The hose is built to exceed original equipment performance standards with a 1,500 psi maximum working pressure, 8,700 psi burst pressure, and 1,600 lb tensile strength.