Sunsong 3401689 Power Steering Pressure Line Hose Assembly

Power Steering Pressure Line Hose Assembly Overview

The Sunsong 3401689 power steering pressure line hose assembly is designed for reliable hydraulic fluid transfer in select GM trucks and SUVs. Engineered to meet the demands of Cadillac, Chevrolet, and GMC vehicles, this hose assembly ensures consistent steering performance for models like the Escalade, Tahoe, and Yukon XL 1500.

• Compatible with Cadillac Escalade, Chevrolet Avalanche 1500, Suburban 1500, Tahoe, GMC Yukon, and Yukon XL 1500
• Length: 39 inches (990 mm) for precise fitment
• End 1 fitting: 16 mm male o-ring
• End 2 fitting: 18 mm male o-ring
• Constructed with durable CSM hose material for heat and abrasion resistance
• No bracket included, designed for direct replacement
• Part number 3401689 for accurate identification

Detailed Product Description

The Sunsong 3401689 power steering pressure line hose assembly is manufactured using chlorosulfonated polyethylene (CSM) material, known for its resistance to heat, oil, and abrasion. This 39-inch (990 mm) hose features male o-ring fittings on both ends—16 mm on one end and 18 mm on the other—ensuring a secure, leak-free connection within the power steering system. The absence of a bracket simplifies installation and replacement, making it a direct fit for the specified GM models. This hose assembly is engineered to maintain hydraulic pressure and fluid flow, critical for smooth and responsive steering in heavy-duty vehicles such as the Chevrolet Suburban 1500 and GMC Yukon.

Common Applications and Problem Resolution

• Replaces worn or cracked power steering pressure hoses causing fluid leaks
• Restores proper hydraulic pressure for improved steering response
• Eliminates steering noise or whining related to hose failure
• Prevents power steering fluid contamination from damaged hose material
• Addresses hose swelling or bulging under high pressure conditions

Installation Notes and Tips

Before installation, verify the hose length and fitting sizes match your vehicle’s specifications. The Sunsong 3401689 does not include a bracket, so retain the original mounting hardware if applicable. Use proper tools to avoid damaging the male o-ring fittings during removal and installation. Bleed the power steering system after replacement to remove air and ensure optimal performance. Refer to technical tips TT1000 and TT1001 for additional guidance on installation and maintenance.

Quality Assurance and Warranty

Sunsong power steering hoses are manufactured to meet or exceed OEM standards for durability and performance. The 3401689 hose assembly undergoes rigorous quality control to ensure resistance to heat, pressure, and abrasion. While specific warranty details may vary, Sunsong products typically include a limited warranty against defects in materials and workmanship. Consult product documentation or your supplier for exact warranty terms.