Rocker Arm Screw Screws are important components of rocker arms, which open and close valves to allow fuel and air in and exhaust out of the combustion chamber Cat parts are manufactured to precise specifications and are built for durability, reliability, productivity, less environmental impact, and reuse SPECIFICATIONS Height (in): 0.6 Length (in): 3.75 COMPATIBLE MODELS Engine - Generator Set D379B D398B D399 Wheel Dozer 834 Pipelayer 594H 583K 583H 594 Engine - Industrial G379 D342 D353C D353D G342C D399 G399 D398B D398 D379B G353D D353E G398 G379A D379 D342C Marine Products D342C D337 D379B D342 D375D D353E D379A D364 D398A D399 D353C D397D D398B D353D Track-Type Tractor D9H 8S D8H D8K D9G D9E 183B 8D