{"product_id":"power-driven-3k-4k-governor-springs","title":"Power Driven 3K\/4K Governor Springs","description":"\u003ch3\u003ePower Driven 3K\/4K Governor Springs — 1994–1998 5.9L 12v Cummins (P7100)\u003c\/h3\u003e\u003cp\u003eGovernor springs are widely considered the best bang-for-buck first mod on a 12v Cummins. The stock P7100 injection pump is governed to cut fuel well before the engine reaches its potential — these springs raise that RPM ceiling, unlocking more power, sharper throttle response, and a noticeably different driving experience. One kit, one afternoon, immediate results.\u003c\/p\u003e\u003ch3\u003eKit Includes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFull set of 3K\/4K governor springs\u003c\/li\u003e\n\u003cli\u003eSpring bases (retainers) included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e3K or 4K — Which Do You Need?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3K (remove the center spring)\u003c\/strong\u003e — Raises the fuel cutoff to ~3,000 RPM. Safe for stock and mildly built engines. The right choice for most street and tow trucks. Better throttle response and power without pushing the engine beyond its limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4K (leave the center spring in)\u003c\/strong\u003e — Raises the fuel cutoff to ~4,000 RPM. More aggressive, best suited for built engines with supporting mods (upgraded valve springs, head studs, turbo). Not recommended for stock motors.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003e⚠️ We strongly recommend installing heavy-duty 60lb valve springs if you plan on revving to 3,250 RPM or higher.\u003c\/strong\u003e Without them, stock valve springs can float at higher RPM and cause engine damage.\u003c\/p\u003e\u003ch3\u003eFits\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1994–1998 Dodge Ram 2500 \/ 3500 5.9L 12v Cummins with P7100 injection pump\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e*May not work for all builds due to other engine\/vehicle modifications.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat do governor springs do on a 12-valve Cummins?\u003c\/h3\u003e\u003cp\u003eThey raise the RPM limit of the mechanical P7100 injection pump, allowing the engine to rev higher and produce more power. It’s one of the most cost-effective performance modifications available for a 12-valve Cummins.\u003c\/p\u003e\u003ch3\u003eWill governor springs hurt my engine?\u003c\/h3\u003e\u003cp\u003eOn a stock engine, 4K springs can accelerate wear. 3K springs are generally safe for stock or mildly built motors. We strongly recommend installing heavy-duty 60lb valve springs if you plan on revving to 3,250 RPM or higher.\u003c\/p\u003e\u003ch3\u003eDo I need any special tools?\u003c\/h3\u003e\u003cp\u003eBasic hand tools and mechanical knowledge are sufficient. Installation is straightforward — watch the install video below. Our optional Governor Spring Adjustment Tool makes the job easier if you plan to do it more than once.\u003c\/p\u003e\u003cp\u003e\u003ciframe style=\"position:relative;width:100%;aspect-ratio:16\/9;\" title=\"3K\/4K Governor Spring Install\" src=\"https:\/\/www.youtube.com\/embed\/fpI5UwpkvOU?mute=1\u0026amp;playsinline=1\u0026amp;rel=0\u0026amp;modestbranding=1\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"Power Driven Diesel","offers":[{"title":"Default Title","offer_id":52940423201043,"sku":"67071911001","price":170.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0721\/0218\/3187\/files\/Power-Driven_3K-4K-Governor-Springs_01_0625.jpg?v=1777606129","url":"https:\/\/urban3dllc.com\/products\/power-driven-3k-4k-governor-springs","provider":"Urban 3D","version":"1.0","type":"link"}