Abstract: A dual cam cover has a molded housing made, preferably, of a thermoset polyester composite material replacing an aluminum casting. An integral stiffening bar added between raised cam chamber walls includes retaining slots for holding associated spark plug wires. Peripheral mounting bosses include cylinder like angled ribs for sturdy support with a pleasant appearance. Isolated mounting screws combine with resilient gaskets in the peripheral flange and around central spark plug and fastener openings to provide sealing and mounting isolation. Improved oil separators include one piece metal baffles with formed drain openings. A bushing and a threaded insert are molded in for mounting a vent tube and an accessory.