Sunsong 3401644 Power Steering Pressure Line Hose Assembly

Power Steering Pressure Line Hose Assembly

Sunsong 3401644 is a power steering pressure line hose assembly built for select Chevrolet and GMC trucks and SUVs from 1980-1984. It is engineered to meet demanding steering-system pressure requirements while supporting a precise OE-style fit for service replacement on applications such as Chevrolet C10, C20, K10, K5 Blazer, and GMC Jimmy.

Key Features

• Max working pressure of 1,500 psi for pressure-side steering service
• Burst pressure rating of 8,700 psi and tensile strength of 1,600 lb
• High-grade steel tubing with zinc electroplating for corrosion resistance
• CSM hose material for durability in steering-system use
• Male O-ring fittings: 16 mm on End 1 and 18 mm on End 2
• 30.8 in. overall length for the specified vehicle applications
• Precision-engineered replacement for select Chevrolet C10, C20, C30, K10, K20, K5 Blazer, GMC C1500, C2500, K1500, and Jimmy models

Detailed Description

This Sunsong power steering pressure line hose assembly is built for direct replacement on confirmed 1980-1984 Chevrolet and GMC applications, including C10, C20, C30, K10, K20, K5 Blazer, GMC Jimmy, and related C1500, C2500, K1500, and K2500 platforms. Part number 3401644 is manufactured to support original-equipment-style routing and connection points, helping restore proper steering-fluid transfer in pressure-line service. The hose assembly is designed with corrosion-resistant steel tubing and durable hose materials to handle heat, moisture, road salt, and grime encountered in daily driving and work-truck use.

This part cross-references Gates 354700 and AMS Automotive 4101 for the same application.

Common Problems This Part Can Help Address

• Power steering fluid leaks from a worn or damaged pressure hose
• Steering assist loss caused by pressure-line failure
• Cracked, corroded, or fatigued hose sections
• Hard steering or inconsistent steering response from restricted fluid flow
• Noise or fluid seepage at the hose connection points

Installation Notes and Tips

Verify fitting sizes and connection style before installation: 16 mm male O-ring on one end and 18 mm male O-ring on the other. Confirm vehicle configuration carefully, as this hose does not apply to Hydroboost-equipped models and some listings exclude chassis cab applications. For best results, inspect related steering components, clean mating surfaces, and check the system for leaks after installation. Fitment includes 1980-1984 Chevrolet and GMC applications such as Chevrolet C10, C20, C30, K10, K20, K5 Blazer, GMC Jimmy, GMC C1500, C2500, K1500, and K2500, with notes varying by model year.

Quality Assurance

Each Sunsong 3401644 hose is high-pressure tested before leaving the factory to confirm performance and installation readiness. The assembly is built to exceed original equipment performance standards in pressure capacity and durability, with zinc-coated steel tubing for added resistance to corrosion and rust.