Sunsong 3404409 Power Steering Pressure Line Hose Assembly - Intermediate Hose

Power Steering Pressure Line for XTS and LaCrosse

Sunsong 3404409 is a power steering pressure line hose assembly built for select Cadillac XTS and Buick LaCrosse applications. It is engineered to meet demanding steering system pressure requirements while maintaining a precise OE-style fit for the intermediate upper hose position.

Key Features

• Fits 2013-2019 Cadillac XTS, intermediate hose, upper
• Fits 2010-2016 Buick LaCrosse, intermediate hose, upper
• 16 mm male O-ring fittings on both ends
• 37.5 in. (952 mm) hose length
• CSM hose material for steering system fluid resistance
• High-pressure design rated for 1,500 psi working pressure and 8,700 psi burst pressure
• Steel tubing with zinc electroplating for added corrosion resistance
• Part number 3404409 for direct reference and ordering

Detailed Description

This Sunsong pressure hose assembly is built for steering systems that require a direct replacement in the intermediate upper hose location. The hose uses 16 mm male O-ring fittings at both ends and a 37.5-inch overall length to match the specified application. Sunsong 3404409 is manufactured with high-grade steel tubing and a zinc coating to help resist rust and corrosion from humidity, road salt, water, and grime. It is also pressure tested before shipment to support consistent operation after installation. This part cross-references Gates 352913 for the same application.

Common Steering Issues This Part May Address

• Power steering fluid leaks at the pressure line
• Cracked, worn, or corroded steering hose tubing
• Loss of steering assist caused by pressure loss
• Noise or stiffness related to a failing pressure hose
• Fitment problems from an incorrect intermediate upper hose

Installation Notes and Tips

Confirm the vehicle year, make, model, and intermediate upper hose position before installation. Verify both end fittings are 16 mm male O-ring and compare the original hose routing, length, and connection points to the replacement part. Inspect nearby steering components, seals, and fluid condition during service so the new hose can be installed into a clean, leak-free system.

Quality Assurance

Each hose is high-pressure tested at the factory before leaving production. Sunsong builds this assembly to exceed original equipment performance standards for pressure capacity, durability, and corrosion resistance.