This valve cover kit from Dorman - OE Solutions fits Blue Bird, Freightliner, and Cummins diesel engines. It comes with connectors and a wiring harness for easy installation. The valve cover gasket is made of silicone material and has a thickness of 11.5mm. The kit includes 10 or more bolt holes and has an uncoated (unfinished) finish. It is not a vintage part and has a manufacturer warranty of 1 year. This valve cover gasket has interchange part numbers of SK615204 and VS50668R, as well as OE/OEM part numbers of 5179091AD, 5179091AB, and 5367847. This product is not a universal fitment and is manufactured in China.