Mack Trucks, Inc. 421GC1175 Exhaust Manifold Screw is a fastener designed to secure the exhaust manifold in Mack engine assemblies. The part is identified by the number 421GC1175, ensuring correct replacement for this specific application. Designed for use with Mack Trucks' exhaust manifold hardware, this screw helps maintain proper mounting of the manifold in the exhaust system.
