OE-Style Power Steering Pressure Hose

Sunsong 3401810 is a power steering pressure line hose assembly built for select Chevrolet and GMC trucks and SUVs from 1973-1979. It is engineered for direct-fit replacement on applications without Hydroboost, with exact-fit routing and corrosion-resistant tubing for dependable steering system service.

• Max working pressure: 1,500 psi
• Burst pressure rating: 8,700 psi
• Tensile strength: 1,600 lb
• 32 in. overall length
• Male inverted flare fittings: 5/8 in. end 1 and 11/16 in. end 2
• CSM hose material for durability
• High-grade steel tubing with zinc electroplating for rust and corrosion resistance
• Factory pressure-tested before shipment

Detailed Application Coverage

This Sunsong power steering pressure line hose assembly is built for classic GM steering systems where precise fit and reliable pressure handling matter. It is a direct replacement for many 1973-1979 Chevrolet C10, C20, C30, K10, K20, K30, C10 Suburban, C20 Suburban, K10 Suburban, K20 Suburban, K5 Blazer, P10, P20, and P30 applications, plus select GMC Jimmy, C1500, C2500, C3500, K1500, K2500, and K3500 models. Part number 3401810 is also cross-referenced to Gates 355320 for the same application.

Built to exceed original equipment performance standards, this hose assembly uses steel tubing with zinc coating to help resist road salt, moisture, grime, and other underhood and road contaminants. The assembly is precision engineered to restore the original hose path and pressure delivery on compatible Chevrolet C10 and GMC Jimmy steering systems, while excluding Hydroboost-equipped vehicles where noted in the fitment data.

Common Steering Issues It Can Address

• Power steering fluid leaks at the pressure line
• Cracked, corroded, or fatigued hose tubing
• Hard steering caused by pressure loss
• Noise or chatter from a failing pressure hose
• Fitment problems from an incorrect replacement line

Installation Notes and Tips

Verify your vehicle does not use Hydroboost before ordering, since several listed applications exclude that system. Confirm both inverted flare fitting sizes and hose routing against the original line before installation. On 1978 Chevrolet C10, C30, K10, K20, K30, and K5 Blazer applications, review the emissions and Hydroboost notes carefully to match the correct configuration.

Part number 3401810 is intended for direct replacement use on the listed Chevrolet and GMC applications, including 1977-1979 Chevrolet C10 and 1979 GMC K1500 models where specified by fitment.

Quality Assurance

Each hose is pressure-tested at the factory before it leaves production to help ensure proper operation and installation. Sunsong designs this assembly to meet demanding steering system pressure requirements and provide long service life in harsh operating conditions.