Sunsong 3403750 Power Steering Return Line Hose Assembly

Power Steering Return Hose for Mini Cooper

Sunsong 3403750 is a power steering return line hose assembly built for low-pressure, high-temperature return-side service. It is a direct-fit replacement for 2002-2008 Mini Cooper models with hydraulic steering, with tubing and hose materials selected to restore the original routing and connection points.

For Mini Cooper owners searching for a power steering return hose assembly, Sunsong 3403750 provides the correct banjo-to-ID hose configuration and OE-style fitment for the hydraulic steering system.

Key Features

• Fits 2002-2008 Mini Cooper, hydraulic steering
• Part number: 3403750
• End 1 fitting: 16 mm banjo
• End 2 fitting: 16 mm ID hose
• 26.4 in. (670 mm) overall length
• NBR hose material for return-line service
• Max working pressure: 250 psi
• Steel tubing with zinc electroplating for corrosion resistance

Detailed Description

This Sunsong power steering return line hose assembly is engineered for the return side of the hydraulic steering system on the 2002-2008 Mini Cooper. The 3403750 uses a 16 mm banjo fitting on one end and a 16 mm ID hose connection on the other, with a 26.4-inch overall length to match the original routing. The steel tubing is zinc plated to help resist rust and corrosion from humidity, road salt, water, and grime.

Built to exceed original equipment performance standards for return-hose service, this assembly is suited for low-pressure, high-temperature operation. It is a practical replacement when servicing a Mini Cooper power steering return line hose assembly and restoring proper fluid return flow in the hydraulic steering circuit.

This part cross-references Dorman HELP 81227 for the same application.

Common Problems This Part Can Address

• Power steering fluid seepage from a worn return hose
• Cracked or hardened hose material from heat and age
• Corrosion on the original steel line section
• Improper hose routing or fitment after prior repairs
• Loss of steering assist caused by return-line leakage

Installation Notes and Tips

Verify hydraulic steering configuration before ordering, since this hose is specified for 2002-2008 Mini Cooper models with hydraulic steering. Compare the banjo and ID hose ends, overall length, and routing against the original line before installation. Inspect nearby brackets, grommets, heat shields, bushings, and protective sleeves during service and replace worn components as needed to restore the system to original condition.

Quality Assurance

Sunsong manufactures this return hose assembly with high-grade steel tubing and zinc electroplating for added corrosion resistance. The hose is precision engineered for exact fit and built for return-line duty at up to 250 psi working pressure.