Sunsong 3401639 Power Steering Pressure Line Hose Assembly
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Sunsong

Sunsong 3401639 Power Steering Pressure Line Hose Assembly

Brand Sunsong 3401639
Bracket (Y/N) N
End 1 Fitting Size (in) 1/2
End 1 Fitting Type Male inverted flare
End 2 Fitting Size (mm) 16
End 2 Fitting Type Swivel o-ring
Hose Material 1 Csm
Length (in) 32.7
Length (mm) 830
PS Switch Port (Y/N) Y
Tech Tip Tt1000|tt1002
Fits Ford · 2 vehicles

Exact-fit assembly. Precision engineered to restore original condition with required wear components.

Corrosion-resistant steel. Zinc plating helps resist rust from humidity, road salt, water, and grime.

Pressure-tested hose. Built to exceed OE performance standards for dependable operation.

Cross-references AMS Automotive 4219, Dayco 71557 and Gates 359890 for the same application. See all 7.

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Not what you need? See all Power Steering Pressure Line Hose Assembly options

Power Steering Pressure Line for Ford Ranger

This Sunsong power steering pressure line hose assembly is built for 1990-1991 Ford Ranger applications and is engineered to restore steering system pressure delivery. Part number 3401639 is made to match the original routing and connection style for a direct replacement on the specified Ranger models.

  • Fits 1990-1991 Ford Ranger, N/A
  • Pressure hose assembly for power steering systems
  • End 1 fitting: 1/2 in. male inverted flare
  • End 2 fitting: 16 mm swivel O-ring
  • 32.7 in. overall length
  • Hose material: CSM
  • Includes a PS switch port
  • Cross-reference: Gates 359890

Built Around OE-Style Specifications

Sunsong 3401639 is manufactured to exceed original equipment performance standards, with a 1,500 psi maximum working pressure, 8,700 psi burst pressure rating, and 1,600 lb tensile strength. The steel tubing is zinc electroplated for added resistance to corrosion from humidity, road salt, water, and grime. This makes it a practical replacement for a Ford Ranger power steering pressure hose where durability and consistent hydraulic performance matter.

This part cross-references Dayco 71557 for the same application.

Common Problems This Hose Can Address

  • Power steering fluid leaks at the pressure line
  • Loss of steering assist from a damaged hose
  • Cracked, corroded, or worn original hose tubing
  • Improper hose sealing at the flare or O-ring connections
  • Steering noise caused by pressure loss in the hydraulic circuit

Installation Notes and Tips

Verify the end fittings, hose length, and PS switch port configuration against the original line before installation. This hose assembly is precision engineered for the listed Ford Ranger fitment, and the exact connection style helps support a clean replacement on the steering pressure circuit. Inspect mating surfaces, seals, and nearby components for wear before completing the repair.

Quality Assurance

Each Sunsong pressure hose is high-pressure tested before leaving the factory to confirm proper operation and installation readiness. The brand’s manufacturing process focuses on fit accuracy, corrosion resistance, and pressure integrity for steering system service.

Related reading

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelNotes
1991FordRanger—
1990FordRanger—
Directly replaces or cross-references 7 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AMS Automotive — 4219Dayco — 71557Gates — 35989036-359890979-1090F0TZ3A719BF07A3A719EA