Sunsong 3403637 Power Steering Return Line Hose Assembly - To Pump

Overview of Sunsong Power Steering Return Line Hose Assembly

The Sunsong 3403637 power steering return line hose assembly is designed for precise fitment on select BMW models including the 318i, 318is, 318ti, 323is, and Z3. Engineered with durable CPE hose material and standardized 15mm ID hose fittings, this 10.6-inch (270mm) hose ensures reliable fluid return in your vehicle's power steering system.

• Compatible with BMW 318i, 318is, 318ti, 323is, and Z3 models
• Part number 3403637 for accurate identification
• End 1 and End 2 fitting size: 15mm ID hose
• Hose length: 10.6 inches (270 mm)
• Constructed from durable CPE hose material
• Includes technical tip TT1000 for installation guidance

Detailed Product Description

This Sunsong power steering return line hose assembly (part number 3403637) is manufactured to meet OEM specifications for BMW vehicles such as the 318i, 318is, 318ti, 323is, and Z3. The hose features 15mm internal diameter hose fittings on both ends, ensuring a secure and leak-free connection within the power steering system. Made from chlorinated polyethylene (CPE), the hose material offers resistance to heat, pressure, and fluid degradation, contributing to the longevity and performance of the power steering return line. With a length of 10.6 inches (270 mm), this hose assembly fits precisely in the designated routing paths of the compatible BMW models.

Common Applications and Issues Addressed

• Replacement of worn or cracked power steering return hoses
• Resolving power steering fluid leaks causing steering difficulty
• Eliminating noise or whining from air entering the return line
• Preventing power steering system pressure loss due to hose failure
• Maintaining proper fluid flow for consistent steering response

Installation Notes and Tips

When installing the Sunsong 3403637 power steering return line hose assembly, ensure the vehicle is safely lifted and the power steering system is depressurized. Use the technical tip TT1000 as a reference for proper hose routing and fitting connection. Verify that both 15mm ID hose fittings are securely seated to prevent leaks. Inspect adjacent components for wear or damage during installation to maintain overall system integrity.

Quality Assurance and Warranty

Sunsong power steering components are manufactured to meet industry standards for durability and performance. The 3403637 hose assembly undergoes quality control inspections to ensure fitment accuracy and material integrity. While specific warranty details may vary, Sunsong products typically include coverage against manufacturing defects to provide confidence in replacement parts for BMW 318i, 318is, 318ti, 323is, and Z3 models.