【Application】 For JDG John Deere engines with Stanadyne Fuel Pumps, cross reference: JDG1559, 40610 【Functionality】 Use for static lock pin timing during installation of the injection pump 【Premium Quality】 Made of high-quality steel, blackened finish. High strength and corrosion-resistant. Use our premium lawn care parts to keep your lawn equipment running smoothly, ensuring longevity and optimal performance 【Easy Installation】 1.Before installing injection pump on engine, install JDG1559 injection Pump Timing Pin into pump , timing pin bore. .