This helps lock the fuel rack in place as you install the fuel injection pump 1011 1011F - DK Engine Parts offers a variety of engine parts and kits for most Deutz applications and engine models. Please take a look at what we offer on our website and feel free to call us anytime with questions regarding items listed on our website. Also note that we offer more parts then what is currently listed on our website. If you do not see what you are looking for, please do not hesitate to call us. We have knowledgeable salesmen on standby to assist you with any questions you might have.