JACOBS 3803907 MICRO CLUTCH SWITCH KIT JAKE BRAKE CUMMINS DIESEL ENGINE EX3116. We would love to answer every question, but we do run into very specific questions that should be directed to your mechanic. We sell parts and you (or a mechanic) will install them. Please verify with the person installing it if it will fit or do what you need it to do, before purchasing. Will call you when your order is ready to go. We will try to resolve any issues, but we can’t rectify a problem if we are not aware of it. Thanks for looking and purchasing with confidence – having been in business since 1951, we are happy to provide all of your military parts.