FIT FOR: 1999-2010 GMC Buick Cadillac Pontiac. Cars Trucks Vans Suv's With 4.8 5.3 6.0 Liter LS Engines. OE/INTERCHANGE PART NUMBER: B31822, 12589016, B32270 SPECIFICS: LIMICAR Head Gasket prevents liquids and gases from escaping into adjacent cylinders and the surrounding oil and coolant galleries.The purpose is to seal the cylinders to ensure maximum compression and avoid leakage of coolant or engine oil into the cylinders.They are designed without a metal core, to allow engine builders to trim the gasket for exact fit on modified ports. FUNCTION: LIMICAR Head Gasket Set are designed to save money by giving the technician the exact gaskets needed for installing an already reconditioned or fully assembled head. LIMICAR Head Gasket systems can withstand high pressures, high temperatures and aggressive media of a car.LIMICAR give technicians not only the gaskets the project requires, but the very best technology available. Package Included: 1 X Engine Camshaft Gasket.