Sunsong 3402099 Power Steering Pressure Line Hose Assembly

Power Steering Pressure Line for GM Vans

Sunsong 3402099 is a power steering pressure line hose assembly built for select Chevrolet G10, G20, and G30 vans, plus GMC G1500, G2500, G3500, G15, G25, and G35 applications. It is engineered to meet demanding steering-system pressure requirements while supporting a precise OE-style fit for service replacement.

Key Features

• Max working pressure rated at 1,500 psi for power steering pressure service
• Burst pressure rating of 8,700 psi and tensile strength of 1,600 lb
• High-grade steel tubing with zinc electroplating for corrosion and rust resistance
• Precision-engineered hose assembly for exact fit on listed Chevrolet and GMC van applications
• End fittings: 16 mm male O-ring and 18 mm male O-ring
• Hose length: 39.5 in. (1003 mm)
• CSM hose material for pressure-line durability

Detailed Description

This Sunsong power steering pressure line hose assembly, part number 3402099, is built for steering systems that require a direct replacement pressure hose with OE-style dimensions and connection points. It is a strong match for 1978-1982 Chevrolet G10, G20, and G30 vans, as well as 1978-1982 GMC G1500, G2500, G3500, G15, G25, and G35 models listed in the fitment data. For 1978-1979 Chevrolet G10, G20, and G30 applications, the listing notes w/o-ring fitting; 1979 Chevrolet and GMC applications also include specific hydroboost exclusions where noted.

The hose assembly is manufactured with steel tubing protected by zinc plating to help resist road salt, moisture, grime, and other underbody exposure. Sunsong 3402099 is pressure-tested before it leaves the factory, and its construction is intended to restore worn steering lines to proper operating condition on the specified Chevrolet G10 and GMC G1500 platform vehicles.

This part cross-references Gates 357670 and Dayco 71097 for the same application.

What It Helps Fix

• Power steering fluid leaks from a worn or corroded pressure line
• Steering assist loss caused by hose cracking or line failure
• Noise or erratic steering response related to pressure-side hose damage
• Corrosion-related deterioration on older Chevrolet and GMC van steering lines
• Fitment issues from an incorrect replacement hose on listed G-series applications

Installation Notes and Tips

Verify the end fitting sizes and styles before installation: 16 mm male O-ring on one end and 18 mm male O-ring on the other. Confirm vehicle configuration against the fitment notes, especially hydroboost exclusions on certain Chevrolet and GMC models. Inspect mating ports, seals, and surrounding steering components for wear before installing the new hose.

Quality Assurance

Sunsong pressure hoses are built to exceed original equipment performance standards in pressure capacity and durability. Each hose is high-pressure tested at the factory before shipment to support trouble-free installation and operation.