There’s no need for customisation! We carry a range of sizes and thread patterns, including UNF, UNC, NPT, BSP, and Metric. Oil Vac’s Femco plugs are manufactured with the correct thread length to precisely fit engine oil pans, including Cat 3126, 3116, Cummins Dodge 5.9L, Allison World Transmission, Deutz 10 cylinder engines, and others. Reach out with your requirements, and we’ll happily provide you with a precision fit Femco drain plug.