This Valve Cover Kit with SOHC Cylinder Head is a reliable and durable solution for your vehicle. Made with cast aluminum construction material, it is designed to withstand extreme temperatures and resist leaking. With a direct replacement feature, it matches the original equipment part for a perfect fit and function. Quality tested through try-on and materials testing, this valve cover ensures reliable service. It fits most Blue Bird, Chevrolet, Crane Carrier, GMC, Peterbilt, and Western Star models from 1998-2004. Practical and efficient, this valve cover is a direct OE replacement for Caterpillar 1291131.