Sunsong 3403121 Power Steering Pressure Line Hose Assembly

Power Steering Pressure Line for Classic GM Fitment

Sunsong 3403121 is a power steering pressure line hose assembly built for select 1965-1968 Chevrolet full-size applications. It is engineered to meet demanding pressure requirements while restoring proper steering fluid transfer in Bel Air, Caprice, and Impala models.

Key Features

• Max working pressure of 1,500 psi for power steering system demands
• Burst pressure rating of 8,700 psi
• Tensile strength rated at 1,600 lb
• High-grade steel tubing with zinc electroplating for corrosion resistance
• Precision-fit hose assembly for direct replacement service
• Length: 40.25 in. (1022 mm)
• End 1: 3/8 in. female fitting
• End 2: 7/16 in. male inverted flare fitting
• CSM hose material

Detailed Description

This Sunsong power steering pressure line hose assembly, part number 3403121, is built for direct replacement on 1965-1968 Chevrolet Bel Air, 1966-1968 Chevrolet Caprice, and 1965-1968 Chevrolet Impala applications. The hose uses high-grade steel tubing with a zinc coating to resist rust and corrosion from humidity, road salt, water, and grime, helping maintain reliable steering system performance over time. Sunsong 3403121 is also high-pressure tested before it leaves the factory to support consistent installation and operation.

This part cross-references Gates 352067 for the same application.

What This Hose Helps Address

• Power steering fluid leaks from a worn or damaged pressure line
• Loss of steering assist caused by pressure loss in the hydraulic circuit
• Noise or erratic steering response related to hose deterioration
• Corrosion-related failure in older steel steering lines
• Fitment issues when replacing an original hose on classic Chevrolet Bel Air, Caprice, or Impala models

Installation Notes and Tips

Verify fitting sizes before installation: 3/8 in. female on one end and 7/16 in. male inverted flare on the other. Confirm hose routing, length, and clearance against the original line on your Chevrolet Bel Air, Caprice, or Impala before tightening connections. Inspect mating surfaces and surrounding steering components for wear or contamination so the new pressure line can seal properly.

Quality Assurance

Sunsong subjects each hose to high-pressure testing before it leaves the factory. The pressure line is engineered to exceed original equipment performance standards with a 1,500 psi working pressure, 8,700 psi burst rating, and 1,600 lb tensile strength.