Genuine 17127583175 BMW Coolant Hose Expansion Tank to Water Pump

This Genuine BMW coolant hose (OEM part number 17127583175, also written 17-12-7-583-175) is the engine coolant supply line, also called a coolant recovery tank hose or expansion tank hose. It connects the expansion tank to the water pump. It is part of the engine cooling system, and it carries coolant from the expansion (recovery) tank to the water pump. The pump then circulates the coolant through the engine to regulate temperature.

Key Features:

• Genuine BMW OEM part number 17127583175
• Supply line running from the expansion tank to the water pump
• Original-equipment construction for a factory-correct fit
• Replaces hoses that have become brittle, cracked or leaking

Coolant hoses degrade over time from heat cycling and system pressure. Common signs that a replacement is due include coolant leaks, overheating, and dried coolant residue around the expansion tank. Replacing a worn hose with the OEM part helps restore reliable cooling system performance.