Kit includes oil pump cover, rotor assembly, pressure relief valve and spring, pressure relief plug, pressure relief gasket, (15) 8 x 12mm assembly screws. From Melling’s first M-10 oil pump built with remarkable care and detail for a 1937 six cylinder Chevrolet – Melling’s business has steadily expanded. In 1948 Melling issued its first catalog containing 14 part numbers. Today Melling offers over 350 oil pumps, 80 repair kits and 170 oil pump screens along with an expanded internal engine parts line. From setting the bar for cutting edge oil pump technology with high volume and high pressure oil pumps to being the first nationally recognized aftermarket supplier of new replacement camshafts Melling’s reputation continues to grow.