BMW E46 3 Series Upper Coolant Radiator Hose / Water Pipe Line – Replaces OE 17127510952 - Fits 320i, 323i, 325i, 328i & 330i Models

Restore proper coolant flow and cooling system reliability with this replacement Upper Coolant Radiator Hose / Water Pipe Line for the BMW E46 3 Series. Designed to replace OE part number 17127510952, this hose plays an important role in routing coolant between key cooling system components and helping your engine maintain proper operating temperature under daily driving and more demanding conditions.

As E46 cooling systems age, rubber hoses can begin to harden, swell, crack, or weaken from years of heat cycling and coolant exposure. Once that happens, even a small split or weak point can quickly turn into a coolant leak, pressure loss, or overheating issue. Replacing aging radiator hoses before they fail is one of the smartest preventative maintenance steps you can take on an E46.

This replacement hose is designed to match the original fit and routing of the factory upper coolant line, making it a dependable solution for restoring cooling system integrity. Whether you are addressing a leak, refreshing the entire cooling system, or replacing old original hoses as preventative maintenance, this part helps keep your engine bay more reliable and your cooling system functioning the way it should.

Key Features:

• Direct Replacement for OE 17127510952: Designed to replace the factory upper coolant radiator hose / water pipe line on compatible E46 models.
• Restores Proper Coolant Flow: Helps maintain correct coolant circulation between the radiator and engine cooling system.
• Ideal for Cooling System Refreshes: A smart replacement when servicing aging hoses, radiator components, or the full E46 cooling system.
• Helps Prevent Leaks and Overheating: Replacing worn hoses can help reduce the risk of coolant loss and temperature-related engine problems.
• OEM-Style Fitment: Built to match the original hose routing and installation layout for compatible BMW applications.

FITMENT: BMW 3 Series – E46 Sedan, Coupe, Touring, Convertible

Fits compatible BMW E46 3 Series models including 320i, 323i, 325i, 328i, and 330i applications using OE part number 17127510952. If you’re unsure whether this hose matches your specific vehicle, please contact us with your VIN and we’ll be happy to verify compatibility before you order.

REPLACES OE PART NUMBER:
17127510952

Please refer to the “Fitment” section in the product description for compatibility details.