Dorman offers a variety of engine coolant recovery tank caps for a range of applications. Engine coolant recovery tank caps are constructed of high-quality plastic. They effectively protect the cooling system by providing a tight seal against the element.Features Save time, money and labor by replacing only the Cap - instead of the entire engine coolant recovery tank Direct replacement for a proper fit every time A necessary safety item - prevents coolant from splashing and/or leaking Color/Finish - Black Installation Type - Twist On Length - 1.501 in. Material - Plastic Width - 2.570 in. Fits - Cadillac 2009-2002, Chevrolet 2010-2001, GMC 2010-2001, Hummer 2009-2003, Pontiac 2010-2003, Saturn 2010-2002 - SKU: KSAO34079