Sunsong 3401771 Power Steering Pressure Line Hose Assembly

Sunsong 3401771 Power Steering Pressure Hose

Sunsong 3401771 is a power steering pressure line hose assembly built for Ford and Mercury applications that use Ford steering gear or Ford power steering pump configurations. It is engineered for direct-fit replacement service on select 1978-1979 Thunderbird, Cougar, LTD, Grand Marquis, and Marquis models.

Key Features

• Pressure hose assembly for power steering systems
• 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 and rust resistance
• Precision-engineered fit for original-condition restoration of wearable hose components
• Factory high-pressure tested before shipment
• End fittings: 1/2 in. male inverted flare and 5/8 in. swivel O-ring
• Hose material: CSM
• Length: 42.3 in. (1074 mm)

Detailed Description

This Sunsong power steering pressure line hose assembly is built to replace worn or leaking pressure lines in select Ford and Mercury vehicles. Part number 3401771 is specified for 1978-1979 Ford Thunderbird, 1978 Ford LTD, 1978 Mercury Grand Marquis, 1978 Mercury Marquis, 1978 Mercury Cougar, and 1979 Mercury Cougar applications with the listed steering gear or pump configurations. The hose uses durable CSM material and steel tubing with zinc coating to resist corrosion from humidity, road salt, water, and grime while maintaining pressure integrity in demanding steering systems.

This part cross-references Dayco 71009 and Gates 355760 for the same application. Sunsong 3401771 is a practical replacement for drivers searching for a Ford Thunderbird power steering pressure hose, a Mercury Cougar steering hose, or a Ford LTD pressure line hose assembly with the correct fitting style and length.

Common Problems This Part Can Address

• Power steering fluid leaks from a cracked or worn pressure hose
• Hard steering caused by pressure loss in the hydraulic line
• Noise or inconsistent steering assist from a deteriorated hose assembly
• Corrosion-related hose failure in humid or salt-exposed environments
• Poor fitment from an incorrect replacement hose

Installation Notes and Tips

Verify steering system configuration before ordering, since fitment depends on Ford steering gear or Ford power steering pump setup and, on some applications, the absence of a cooler. Confirm end fitting type, hose length, and routing against the original hose before installation. Clean the connection points and inspect related steering components for wear or contamination before placing the new hose in service.

Quality Assurance

Each Sunsong hose is pressure tested at the factory before it leaves production. The assembly is engineered to exceed original equipment performance standards for pressure capacity and durability, supporting reliable operation in the specified Ford and Mercury applications.