BMW F-Series Expansion Tank Upper Coolant Hose – OEM Cooling System Replacement, Replaces 17127596831 - Fits F22 F23 F30 F31 F32 F33 F34 & F36 Models

Restore proper coolant flow and maintain dependable engine cooling performance with this OEM-style Expansion Tank Upper Coolant Hose replacement for BMW F-Series vehicles. Designed to replace the factory upper hose connecting the expansion tank to the cooling system, this component helps maintain stable coolant circulation and proper system pressure for reliable engine operation.

As BMW cooling systems age, factory hoses are constantly exposed to heat cycles, pressure fluctuations, and general wear. Over time, the original hose can become brittle, swell, crack, or develop leaks that lead to coolant loss, overheating, and reduced cooling system efficiency. Replacing worn coolant hoses before they fail is an important preventative maintenance step that helps protect both the engine and the rest of the cooling system from more costly repairs.

Manufactured from high-quality automotive-grade materials, this expansion tank upper coolant hose is built to withstand demanding cooling system temperatures and pressure. The precision-molded design helps ensure factory-style fitment and smooth integration with the original cooling system layout, making it a dependable solution for both repairs and preventative maintenance.

Whether you are fixing an active coolant leak, replacing an aging factory hose, or refreshing the cooling system as a whole, this hose helps restore cooling system integrity and long-term reliability without requiring modifications.

Key Features:

• Direct Replacement for OE 17127596831: Designed to replace the factory expansion tank upper coolant hose on compatible BMW F-Series vehicles.
• Restores Proper Coolant Circulation: Helps maintain stable coolant flow and reliable cooling system performance.
• Connects Expansion Tank to Cooling System Components: Supports proper coolant routing and pressure control within the system.
• Helps Prevent Coolant Leaks and Pressure Loss: Replacing worn hoses can help reduce the risk of coolant seepage, hose failure, and overheating.
• High-Temperature and Pressure-Resistant Construction: Built to handle demanding engine bay conditions over time.
• Precision-Molded OEM-Style Fitment: Designed to match the original hose routing and factory installation layout.
• Durable Automotive-Grade Materials: Made for dependable long service life in daily-driven and performance-oriented applications.
• Ideal for Repairs and Preventative Maintenance: A smart replacement when servicing an aging BMW cooling system.

FITMENT:

• BMW 1 Series – F20 5 Door Hatch
• BMW 1 Series – F21 3 Door Hatch
• BMW 2 Series – F22 Coupe
• BMW 2 Series – F23 Convertible
• BMW 3 Series – F30 Sedan
• BMW 3 Series – F31 Touring
• BMW 3 Series – F34 Gran Turismo
• BMW 4 Series – F32 Coupe
• BMW 4 Series – F33 Convertible
• BMW 4 Series – F36 Gran Coupe

Compatible with select BMW applications equipped with B38, B46, B48, and N13 engines, including common fitments such as:

• BMW 118i – F20 / F21
• BMW 220i – F22 / F23
  
• BMW 320i – F30 / F31 / F34
• BMW 420i – F32 / F33 / F36

OEM REFERENCE: 17127596831

Please verify your vehicle fitment and OEM part number before ordering.

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