Power Steering Return Hose Overview

The Sunsong 3402113 power steering return line hose assembly is built for low-pressure, high-temperature return-side service and is engineered to match original equipment fitment requirements. It is a direct replacement for select Ford, Mercury, Buick, Pontiac, and Firebird applications, including 1977-1978 Ford LTD and 1967-1970 Pontiac models.

Key Features

• Power steering return line hose assembly for return-side fluid routing
• 36 in. length with a 3/8 in. ID hose end and 5/8 in. male inverted flare end
• CSM hose material for durability in steering system service
• Rated for a maximum working pressure of 250 psi
• High-grade steel tubing with zinc electroplating for corrosion and rust resistance
• Precision-engineered fit for select Ford LTD, Mercury Marquis, Buick Riviera, and Pontiac Bonneville applications
• Cross-references Gates 352680 for the same application

Detailed Description

Sunsong 3402113 is a power steering return line hose assembly made for vehicles that use a return-side hose with low-pressure fluid flow. The assembly uses high-grade steel tubing with a zinc coating to help resist corrosion from humidity, road salt, water, and grime, while the CSM hose section supports high-temperature steering system operation. This part number is a practical OE-style replacement for vehicles such as the 1977-1978 Ford LTD, 1977-1978 Mercury Grand Marquis, 1977-1978 Mercury Marquis, 1969-1970 Buick LeSabre, 1969-1970 Buick Riviera, 1970 Buick Skylark, 1967-1970 Pontiac Bonneville, 1967-1970 Pontiac Catalina, 1969-1970 Pontiac Grand Prix, and 1967 Pontiac Firebird. The Sunsong 3402113 is also referenced by several aftermarket numbers, including Gates 352680.

What It Helps Repair

• Power steering fluid seepage at the return line
• Cracked, hardened, or deteriorated hose material
• Corrosion on steel return line sections
• Improper routing or fitment from a worn original hose
• Steering system noise or fluid loss related to a damaged return hose

Installation Notes and Tips

Verify end sizes before installation: 3/8 in. ID hose on one end and 5/8 in. male inverted flare on the other. This assembly is 36 in. long and is listed with cut-to-fit or adjustable-length notes on certain applications, so confirm routing and final length against the original hose before securing the line. Use the vehicle-specific fitment notes for steering pump configuration, including Saginaw pump applications where listed.

Quality Assurance

Sunsong states that this return hose exceeds original equipment performance standards for return-side steering service and is engineered for exact fitment on the listed applications. The steel tubing is zinc electroplated to improve resistance to corrosion and rust in demanding underbody conditions.