Sunsong 3401705 Power Steering Pressure Line Hose Assembly

Sunsong 3401705 Power Steering Pressure Hose

Sunsong 3401705 is a power steering pressure line hose assembly built for select Pontiac and Buick applications from the 1973-1976 model years. It is engineered to meet demanding pressure requirements while maintaining an exact-fit layout for direct replacement service.

Key Features

• Max working pressure rated at 1,500 psi
• 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-engineered hose assembly for OE-style fitment
• Pressure-tested before shipment for quality verification
• End fittings: 11/16 in. male inverted flare and 5/8 in. male inverted flare
• Hose length: 36.8 in. (934 mm)
• Hose material: CSM

Detailed Description

This Sunsong power steering pressure line hose assembly is designed for direct replacement on select Pontiac Bonneville, Catalina, Grand Prix, Grand Am, LeMans, Grand LeMans, GTO, Laurentian, and Buick LeSabre applications. The 3401705 hose uses high-grade steel tubing with a zinc coating to resist rust, road salt, moisture, and grime, helping maintain dependable steering system performance in harsh driving conditions. Its OE-style dimensions and inverted flare fittings support a precise connection at the pump and steering gear.

This part cross-references Gates 353750 and FEL-PRO 70272 for the same application. It is a strong match for drivers searching for a 1973-1976 Pontiac Bonneville power steering pressure hose, a 1973-1976 Pontiac Grand Prix pressure line hose assembly, or a 1975 Buick LeSabre power steering hose replacement. The Sunsong 3401705 part number is also commonly referenced in steering system repair searches for these vehicles.

What It Helps Fix

• Power steering fluid leaks at the pressure line
• Loss of steering assist from a damaged hose
• Cracked, corroded, or fatigued original hose assemblies
• Hard steering caused by pressure loss in the hydraulic system
• Noise or fluid seepage from worn hose connections

Installation Notes and Tips

Verify end fitting sizes and hose routing before installation. This assembly uses 11/16 in. and 5/8 in. male inverted flare connections and measures 36.8 in. in length. Confirm vehicle-specific routing on Pontiac and Buick models, including 1976 Pontiac Grand LeMans and 1976 Pontiac LeMans applications noted without air pump equipment. Inspect mating components for wear, contamination, or corrosion before connecting the new hose.

Quality Assurance

Each Sunsong 3401705 hose is pressure-tested at the factory before it leaves production. The assembly is built to exceed original equipment performance standards for pressure capacity and durability, with corrosion-resistant tubing intended to support long service life in demanding steering system use.