Sunsong 3404175 Power Steering Pressure Line Hose Assembly - Pump To Hydroboost

Power Steering Pressure Line Hose Assembly

Sunsong 3404175 is a power steering pressure line hose assembly built for direct replacement on select Chevrolet and GMC applications. It is engineered for the pump to hydroboost position and is specified for 1973-1974 Chevrolet Blazer, C10 Suburban, C20 Suburban, K10 Suburban, K20 Suburban, and GMC Jimmy.

Key Features

• Fits pump to hydroboost steering system routing
• 3/8 in. male inverted flare end 1 fitting
• 7/16 in. male inverted flare end 2 fitting
• 63.5 in. hose length for the listed applications
• CSM hose material for pressure-line service
• High-grade steel tubing with zinc electroplating for corrosion resistance
• Pressure tested before shipment for quality control
• Cross-references Four Seasons 55129 and Gates 368290 for the same application

Detailed Description

This Sunsong pressure hose is built to meet demanding steering-system requirements with a maximum working pressure of 1,500 psi, a burst pressure rating of 8,700 psi, and tensile strength rated at 1,600 lb. The steel tubing is zinc coated to resist rust and corrosion from humidity, road salt, water, and grime, helping maintain reliable performance in harsh underhood and underbody conditions. For 1973-1974 Chevrolet Blazer and GMC Jimmy hydroboost setups, as well as C10 Suburban, C20 Suburban, K10 Suburban, and K20 Suburban pump to hydroboost routing, part number 3404175 provides the correct fitment and connection style.

Common Problems This Part Addresses

• Power steering fluid leaks at the pressure line
• Cracked, worn, or corroded hose tubing
• Loss of steering assist from pressure-line failure
• Incorrect hose length or fitting mismatch during replacement
• Noise or poor steering response caused by a damaged pressure hose

Installation Notes and Tips

Verify the vehicle’s pump to hydroboost routing before installation and match the 3/8 in. and 7/16 in. male inverted flare connections to the existing system. Inspect adjoining hard lines, seals, and mounting points for wear or corrosion before installing the new hose. Confirm that the hose follows the original routing path to avoid contact with heat sources or moving components. This part number 3404175 is listed for 1973-1974 Chevrolet Blazer, C10 Suburban, C20 Suburban, K10 Suburban, K20 Suburban, and GMC Jimmy applications.

Quality Assurance

Each hose is pressure tested at the factory before it leaves production. Sunsong also specifies performance targets above original equipment standards, including pressure, burst, and tensile strength ratings, to support dependable operation in the listed Chevrolet and GMC applications.