Water Flange Block (Arrowhead) (318I M43) is listed as an auto-part option. Confirm fitment, part number and compatibility before purchase, especially where vehicle-specific matching is required.
Water Flange Block (Arrowhead) (318I, M43) is a component designed for cooling system applications, specifically linked to the BMW 318i with the M43 engine. This part typically connects sections of the cooling system, enabling coolant flow between engine parts and helping maintain proper operating temperature.
This water flange block plays a key role by securing hoses and directing coolant through the relevant engine pathways. When replacing, buyers should compare the shape, connection points, and overall design with the original unit in their vehicle to ensure compatibility. The “Arrowhead” descriptor may be useful in visually matching the part or confirming model-specific design cues. It’s associated with an unknown brand and carries the SKU BB-251958 for identification.
Ensure your vehicle requires a Water Flange Block as pictured and described on this listing before purchasing. When searching for this part, focus on the exact vehicle model and engine code (318i M43) to avoid fitment issues. Questions about fit or compatibility can be addressed through the sales desk or via a request for a part submission.
- Part type: Cooling system connector
- Vehicle: BMW 318i (M43 engine)
- SKU: BB-251958
Need help matching this item to your vehicle? Use Vehicle Parts Finder, Request a Part or Platinum Sales Desk with your VIN, engine number, part number or clear photos.





