OE 03974 — coolant expansion tank, drive belt

What is OE number 03974?

OE (Original Equipment) number 03974 is a manufacturer's reference code for coolant expansion tank used to identify the exact specification of a part fitted during vehicle production. By cross-referencing this OE number, you can find 6 compatible aftermarket brands that match the same specification — often at a lower price than the original. All parts listed above are verified to match OE 03974.