Sunsong 3404640 Power Steering Return Line Hose Assembly - Cooler To Reservoir

OE-Style Return Hose for Nissan Altima

The Sunsong 3404640 power steering return line hose assembly is built for low-pressure, high-temperature return-side service. It is a direct-fit replacement for select 2008-2012 Nissan Altima models with cooler-to-reservoir routing, making it a practical choice when the original hose shows wear, seepage, or corrosion.

Engineered to restore the return path in the power steering system, this hose assembly follows the original routing and fitment for the Nissan Altima. The 3404640 part number is a direct reference for buyers searching for a replacement power steering return line hose assembly with OE-style fit.

Key Features

• Fits 2008-2012 Nissan Altima, cooler to reservoir
• Max working pressure rated at 250 psi for return-side operation
• Built for low-pressure, high-temperature steering fluid flow
• Steel tubing with zinc electroplating for corrosion and rust resistance
• Precision-engineered to exact fit for original routing
• Includes required brackets, grommets, heat shields, bushings, and protective sleeves as needed

Detailed Description

Sunsong 3404640 is a power steering return line hose assembly made for the return circuit between the cooler and reservoir on the Nissan Altima. It uses high-grade steel tubing with zinc coating to resist damage from humidity, road salt, water, and grime, helping maintain durability in demanding underbody conditions. The assembly is shaped to match the original layout and restore worn wearable components to original condition where applicable.

This part cross-references Nissan OE numbers 49721JA015 and 49721JA02B for the same application. Buyers looking for a 2008-2012 Nissan Altima power steering return hose, cooler to reservoir, will find 3404640 listed for direct replacement use.

Common Problems This Part Can Address

• Power steering fluid seepage from a worn return hose
• Corrosion on the original steel line
• Cracked or deteriorated hose sections from heat exposure
• Incorrect routing or fit after prior repair work
• Noise or steering performance issues caused by fluid loss

Installation Notes and Tips

Verify the vehicle routing before installation and confirm the cooler-to-reservoir configuration on the Nissan Altima. Inspect adjacent brackets, bushings, and protective sleeves during service so the replacement line seats correctly and follows the factory path.

Quality Assurance

Sunsong manufactures this return hose assembly to exceed original equipment performance standards for return-side steering service. The zinc-plated steel construction and exact-fit engineering support consistent fitment and corrosion resistance in everyday driving conditions.