BMW 2/3/4 Series Expansion Tank Hose (2017–2021)

This Original BMW Expansion Tank Hose is listed for BMW 2/3/4 Series from 2017–2021. It stores expanding coolant and provides the system’s fill and recovery point. Applications include 230i, 330i, and 430i. BMW backs Original BMW Parts in the U.S. with a two-year, unlimited-mileage limited warranty.

Technical Details

• Manufacturer: BMW
• Manufacturer part number: 17-12-8-623-572
• Component: Expansion Tank Hose
• Vehicle applications: BMW 2/3/4 Series
• Production range: 2017–2021
• Primary function: stores expanding coolant and provides the system’s fill and recovery point
• Listed models: 230i, 330i, and 430i

Fitment & Compatibility

Confirm the application in the table below, including production year, model designation, and submodel notes. Match the engine, hose or connection layout, cooling-system equipment, and production date. Need a second fitment check? Send PMB Performance the VIN. Our team has more than 20 years of experience identifying European vehicle applications.