These GM LS engine steam line fittings are available to upgrade the factory steam tubes of your modified LS powered cars, converting them to an AN fitting. They bolt to each corner of your cylinder heads and feature AN4 male threads, allowing you to run aftermarket hosing. O-rings and stainless steel hardware is included.

These GM LS engine steam line fittings are available to upgrade the factory steam tubes of your modified LS powered cars, converting them to an AN fitting. They bolt to each corner of your cylinder heads and feature AN4 male threads, allowing you to run aftermarket hosing. O-rings and stainless steel hardware is included.