Click to enlarge

This line of Melling oil pumps has a larger inlet hole and hardened steel gears, which are about 25% longer, supplying additional oil flow for wider bearing clearances. The driveshaft and idler shaft have been extended into the cover to provide extra support and eliminate any shaft deflection. The pressure relief spring plug is threaded for easy replacement, and some pumps have a heavy-duty driveshaft with a steel sleeve and extra spring where noted. Pickup specs & applications are below.