Sunsong 3401466 Power Steering Pressure Line Hose Assembly - Pump To Hydroboost

Power Steering Pressure Line for Astro and Safari

Sunsong 3401466 is a power steering pressure line hose assembly built for pump-to-hydroboost applications on select Chevrolet Astro and GMC Safari vans. It is engineered to meet demanding steering system pressure requirements while supporting a precise OE-style fit for service replacement.

• Fits 1990-1994 Chevrolet Astro, pump to hydroboost
• Fits 1990-1994 GMC Safari, pump to hydroboost
• 16 mm male O-ring end 1 fitting
• 18 mm male O-ring end 2 fitting
• 43 in. hose length for the listed application
• CSM hose material for fluid resistance and durability
• High-grade steel tubing with zinc coating for corrosion resistance
• Pressure-rated construction with a 1,500 psi max working pressure

Built for Pressure and Corrosion Resistance

This Sunsong power steering pressure line hose assembly is made to replace the pressure side hose between the pump and hydroboost unit on the specified Chevrolet Astro and GMC Safari models. The hose construction is rated for high pressure service, with a burst rating of 8,700 psi and tensile strength of 1,600 lb, while the steel tubing uses zinc plating to help resist rust from humidity, road salt, water, and grime. Sunsong 3401466 is precision engineered to match the listed fitment and restore the steering hydraulic circuit to original operating condition.

This part cross-references Gates 34941 and 364820 for the same application.

Common Problems This Hose Can Address

• Power steering fluid leaks at the pressure line
• Cracked, corroded, or fatigued hose tubing
• Loss of steering assist from pressure-side hose failure
• Hydroboost pressure line seepage on Astro and Safari vans
• Noise or inconsistent steering response caused by restricted hose flow

Installation Notes and Tips

Verify the 16 mm and 18 mm male O-ring connections before installation and confirm the hose routing matches the pump-to-hydroboost layout on your vehicle. Inspect mating seals, brackets, and nearby components for wear or damage before reassembly. After installation, refill the system with the correct fluid and bleed air from the power steering circuit according to the vehicle service procedure.

Quality Assurance

Each Sunsong pressure hose is high-pressure tested before it leaves the factory to help ensure proper sealing and dependable operation. The hose is built to exceed original equipment performance standards for the listed application.