Sunsong 3402150 Power Steering Pressure Line Hose Assembly

Power Steering Pressure Line for Mazda RX-7

This Sunsong power steering pressure line hose assembly is built for 1986-1991 Mazda RX-7 applications with 16mm end fittings. Sunsong 3402150 is engineered as an OE-style replacement for restoring steering system pressure and dependable fluid transfer.

Key Features

• Fits 1986-1991 Mazda RX-7, N/A, with 16mm end fittings
• Male inverted flare fittings on both ends, 16 mm each side
• 31.9 in. (810 mm) hose length for direct replacement use
• CSM hose material for durability in power steering service
• High-grade steel tubing with zinc electroplating for corrosion resistance
• Pressure-tested before leaving the factory for installation confidence
• Part number: 3402150

Detailed Description

Sunsong 3402150 is a power steering pressure line hose assembly for the Mazda RX-7, covering 1986-1991 model years with 16mm end fittings. It is built to meet original equipment performance standards, 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 plated to help resist rust and corrosion from humidity, road salt, water, and grime. This part number, 3402150, is a direct-fit pressure hose solution for RX-7 steering service.

This part cross-references Gates 358890 and Dayco 71437 for the same application.

Common Repair Symptoms

• Power steering fluid leaking from the pressure line
• Steering assist loss caused by hose damage or internal wear
• Cracked, rusted, or corroded pressure tubing
• Noise or stiffness in the steering system from restricted fluid flow
• Failed hose fittings at the pump or steering gear connection

Installation Notes and Tips

Verify the vehicle uses 16mm male inverted flare end fittings before installation. Inspect the routing path, mounting points, and surrounding components for wear or damage, and replace any compromised lines or seals as needed. Confirm the hose length and fitting orientation match the original layout on the Mazda RX-7 to support proper installation.

Quality Assurance

Each Sunsong pressure hose is high-pressure tested before it leaves the factory. The assembly is precision engineered for exact fit and built to restore worn wearable parts to original condition on the steering system.