Sunsong 3401523 Power Steering Return Line Hose Assembly

OE-Style Power Steering Return Hose

Sunsong 3401523 is a power steering return line hose assembly built for low-pressure, high-temperature return-side service. It is engineered for direct fitment on select Buick, Oldsmobile, and Pontiac applications, including 1987-1991 Buick LeSabre, 1987-1989 Oldsmobile 98, 1987-1989 Oldsmobile Delta 88, and 1987-1989 Pontiac Bonneville.

With a 3/8 in. ID hose end, a 16 mm male O-ring end, and a 191.5 in. overall length, this return hose assembly is built to restore proper steering fluid routing on the listed vehicles. Part number 3401523 also cross-references Dayco 70053 for the same application.

Key Features

• Power steering return line hose assembly for low-pressure return-side operation
• Max working pressure of 250 psi
• CSM hose material for heat and fluid resistance
• 3/8 in. ID hose end and 16 mm male O-ring end
• 191.5 in. overall length for application-specific routing
• Precision-engineered for OE-style fit on listed Buick, Oldsmobile, and Pontiac models
• Part number 3401523

Detailed Description

Sunsong 3401523 is manufactured to meet original equipment performance expectations for the steering return circuit. The hose assembly uses high-grade steel tubing with zinc electroplating for corrosion and rust resistance, helping protect against humidity, road salt, water, and grime. The return hose is built for exact fitment and is intended to restore worn steering fluid routing on 1987-1991 Buick LeSabre, 1987-1989 Oldsmobile 98, 1987-1989 Oldsmobile Delta 88, and 1987-1989 Pontiac Bonneville applications. Part number 3401523 is a direct replacement choice for service work where the original return line has deteriorated or leaked.

Common Problems This Part Can Address

• Power steering fluid leaks from a worn return hose
• Cracked, hardened, or heat-damaged hose material
• Corrosion on the original steel line section
• Restricted or unreliable steering fluid return flow
• Fitment issues caused by an incorrect replacement hose

Installation Notes and Tips

Verify the end fittings before installation: 3/8 in. ID hose on one end and a 16 mm male O-ring connection on the other. Confirm vehicle application details, including the note for Exc. Finned Cooler where listed, before ordering or installing. Inspect adjacent steering components, clamps, seals, and routing points for wear so the replacement hose can be installed without reusing damaged parts.

Quality Assurance

Sunsong builds this return hose assembly to exceed original equipment performance standards for return-side steering service. The corrosion-resistant steel tubing and application-specific engineering support consistent fit and durable operation on the listed Buick, Oldsmobile, and Pontiac vehicles.