Sunsong 3404840 Power Steering Return Line Hose Assembly - Gear To Reservoir

Power Steering Return Hose Overview

Sunsong 3404840 is a power steering return line hose assembly built for low-pressure, high-temperature return-side service. It is engineered for direct replacement on select Buick, Chevrolet, and Pontiac applications, including Buick Allure, Buick LaCrosse, Chevrolet Impala, Pontiac Grand Prix, and Chevrolet Monte Carlo.

For shoppers searching for a power steering return hose for 2006-2009 Chevrolet Impala or a return line hose assembly for 2005-2008 Pontiac Grand Prix, this part number 3404840 provides an OE-style fit with application-specific construction.

Key Features

• Return line hose assembly for steering system fluid return routing
• Rated for a maximum working pressure of 250 psi
• Suitable for low-pressure, high-temperature operation
• 16 mm male end fitting
• CSM hose material for fluid-handling durability
• Precision-engineered to exact fit for the listed applications
• Cross-reference: Dayco 85047 and Gates 366344 for the same application

Detailed Description

Sunsong 3404840 is manufactured as a replacement power steering return line hose assembly for vehicles that use a return-to-reservoir or gear-to-reservoir steering hose layout. The hose is built to exceed original equipment performance standards in return-side service, with tubing made from high-grade steel and zinc electroplating for added resistance to corrosion and rust from humidity, road salt, water, and grime. This makes it a practical choice for restoring steering fluid routing on a 2006-2009 Chevrolet Impala, 2005-2008 Pontiac Grand Prix, 2006-2007 Chevrolet Monte Carlo, and the listed Buick applications.

Part number 3404840 is also referenced by 92890, 10341918, 15291017, 15876378, and 19177771.

Vehicle Fitment

• Fits 2008-2009 Buick Allure, N/A
• Fits 2008-2009 Buick LaCrosse, N/A; part comes equipped with integrated finned cooler
• Fits 2006-2009 Chevrolet Impala, N/A
• Fits 2005-2008 Pontiac Grand Prix, N/A
• Fits 2006-2007 Chevrolet Monte Carlo, Gear To Reservoir

Common Problems This Part Can Address

• Leaking or cracked power steering return hose
• Corrosion on the original return line tubing
• Restricted steering fluid return flow
• Noise or steering performance issues caused by a damaged hose assembly
• Failure of the original hose at the fitting or along the line

Installation Notes and Tips

Verify the end fitting size, routing, and position before installation. This assembly uses a 16 mm male end fitting and is listed for N/A and gear-to-reservoir configurations, so matching the original hose path is important. Inspect surrounding brackets, grommets, heat shields, bushings, and sleeves on the vehicle and replace worn components as needed to restore the steering system to original condition.

Quality Assurance

Sunsong manufactures this return hose assembly with corrosion-resistant zinc-coated steel tubing and application-specific engineering to support reliable steering system service on the listed Buick, Chevrolet, and Pontiac models.