Moroso 63793 - Tank, Coolant Expansion, Bmw E46 M3 01-06

Coolant Tank, Expansion, Fits BMW E46 M3 01-06 Fabricated Aluminum • Direct bolt-in replacement to stock 2 piece plastic tank • Fabricated Aluminum for strength, factory tanks fail after repeated high heat situations & age • No cutting of factory hoses is required and accepts the factory clip-on hose • Included is a Moroso Part No. 63324 racing radiator cap that operates in the same pressure range as the factory cap • The Moroso radiator cap mounts to a billet aluminum neck that will not strip out like plastic threaded necks • Easy to read slight level is included • This Aluminum tank can be polished, chromed, painted, powder coated or left as is for a race look.