Description ROCKER GP USED FOR ENGINE PERKINS 1106E & CATERPILLAR C6.6 SUITABLE FOR M318 , 120M , D6K , D6N , 12M , M318D , 953D , 963D , M322D , AP1000E , CS76 XT CP56 , CP76 , M553C , 938H , IT38H , 613G ,BG-600D , CS74B CP74B AND CS78B , R1300G ,AP655D ,