{"product_id":"fass-drop-in-series-heavy-duty","title":"FASS Drop-In Series Diesel Fuel System - Heavy Duty","description":"\u003cp\u003eThe Drop-In Series is the fastest way onto FASS filtration. It mounts in the factory location and uses your OEM fuel lines — no cutting, no drilling, and typically one to three hours in the driveway.\u003c\/p\u003e\n\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eMake \u0026amp; Model\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003eCaterpillar 3406E, C10, C11, C12, C13, C15, C16, C18\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003eDetroit Series 60\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003eCummins ISX \u0026amp; X15\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003ctd\u003eUniversal heavy duty\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;margin:1.5em 0;\"\u003e\u003ciframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/6-u4CuHAHUg\" title=\"NEW: Universal Drop-In Series Fuel System for Commercial Diesels\" loading=\"lazy\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\u003cp style=\"text-align:center;\"\u003e\u003cem\u003eNEW: Universal Drop-In Series Fuel System for Commercial Diesels\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eFlow Ratings, Part Numbers \u0026amp; Install Manuals\u003c\/h3\u003e\u003cp\u003eFASS rates flow on diesel at operational pressure, not on thin fluid at zero psi. The number below is what the system actually delivers.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFlow\u003c\/th\u003e\n\u003cth\u003eSupports\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eInstall Manual\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e0 GPH\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eDIFSCAT1001\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0584\/8305\/files\/DIFSCAT1001.pdf?v=1781793977\" target=\"_blank\" rel=\"noopener\"\u003eDownload PDF\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0 GPH\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eDIFSDET1001\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0584\/8305\/files\/DIFSDET1001.pdf?v=1781793970\" target=\"_blank\" rel=\"noopener\"\u003eDownload PDF\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0 GPH\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eDIFSHD3001\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0584\/8305\/files\/DIFSHD3001.pdf?v=1781793977\" target=\"_blank\" rel=\"noopener\"\u003eDownload PDF\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0 GPH\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eDIFSHD4001\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0584\/8305\/files\/DIFSHD4001.pdf?v=1781793974\" target=\"_blank\" rel=\"noopener\"\u003eDownload PDF\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0 GPH\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eDIFSHD5001\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eManuals are hosted PDFs and run 5–6 MB. Download over wi-fi before you head out to the truck.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat It Does For Your Truck\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriples injection system life.\u003c\/strong\u003e Clean, air-free, water-free fuel is the single cheapest thing you can do for a set of injectors and a pump.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestores power and throttle response.\u003c\/strong\u003e Better atomisation and stable supply pressure let the injection system do what it was designed to do.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproves fuel economy.\u003c\/strong\u003e More complete combustion, though results vary by truck and right foot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStarts in the cold.\u003c\/strong\u003e Dependable operation in hard winter climates, especially paired with a FASS heater.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRuns cleaner.\u003c\/strong\u003e Better combustion means less soot and fewer DPF regens.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eImproves fuel lubricity by at least 10%.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdvanced Filtration Technology\u003c\/h3\u003e\n\u003cp\u003eFASS doesn't just move fuel — it conditions it before your injection system ever sees it.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 micron absolute filtration.\u003c\/strong\u003e Microglass media catches debris far smaller than an OEM filter will stop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtreme Water Separator.\u003c\/strong\u003e Third-party verified to remove over 99% of water, and a genuine fail-safe if you ever pull a bad tank of fuel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir and vapour removal.\u003c\/strong\u003e FASS's patented separation process strips the entrained air that causes hard starts, pressure drop, cavitation and injector wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMass Flow Return (MFR).\u003c\/strong\u003e Unused fuel is sent back through the filters instead of straight to the tank, so the diesel in your tank gets cleaner the longer you drive.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;margin:1.5em 0;\"\u003e\u003ciframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/_lcHO9VHRb4\" title=\"Installing the Universal Drop-In Series Fuel System\" loading=\"lazy\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\u003cp style=\"text-align:center;\"\u003e\u003cem\u003eInstalling the Universal Drop-In Series Fuel System\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhisper Technology — the quietest motor in the category\u003c\/li\u003e\n\u003cli\u003ePerformance Radius Cuts for smoother internal flow with no sharp restrictions\u003c\/li\u003e\n\u003cli\u003eHeavy-duty bolt-on steel mounting brackets\u003c\/li\u003e\n\u003cli\u003e1,000,000+ mile motor life expectancy\u003c\/li\u003e\n\u003cli\u003e30,000 mile filter life expectancy\u003c\/li\u003e\n\u003cli\u003eOptional electric fuel heater ports for cold-climate operation\u003c\/li\u003e\n\u003cli\u003eUnder a 0.5% failure rate across the product line\u003c\/li\u003e\n\u003cli\u003eLimited lifetime warranty with registration\u003c\/li\u003e\n\u003cli\u003eEngineered, manufactured and assembled in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;margin:1.5em 0;\"\u003e\u003ciframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/slubDV01GLk\" title=\"Watch BEFORE buying: Drop-In vs. Titanium Signature Series\" loading=\"lazy\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\u003cp style=\"text-align:center;\"\u003e\u003cem\u003eWatch BEFORE buying: Drop-In vs. Titanium Signature Series\u003c\/em\u003e\u003c\/p\u003e\n\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;margin:1.5em 0;\"\u003e\u003ciframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/UoC893TPYXk\" title=\"NEW for Detroit Diesel Series 60: Drop-In Fuel Systems!\" loading=\"lazy\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\u003cp style=\"text-align:center;\"\u003e\u003cem\u003eNEW for Detroit Diesel Series 60: Drop-In Fuel Systems!\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhy FASS\u003c\/h3\u003e\n\u003cp\u003eFASS doesn't rush product to market. The company line is “strive for perfection, settle for excellence,” and the sub-0.5% failure rate is what that discipline buys you. Every system is engineered, built and assembled in the United States.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eRegister your system with FASS to activate the limited lifetime warranty.\u003c\/em\u003e\u003c\/p\u003e","brand":"FASS Fuel Systems","offers":[{"title":"Caterpillar 3406E \/ C10-C18","offer_id":44642552021034,"sku":"FAS-DIFSCAT1001","price":249.0,"currency_code":"USD","in_stock":true},{"title":"Detroit Series 60","offer_id":44642552053802,"sku":"FAS-DIFSDET1001","price":249.0,"currency_code":"USD","in_stock":true},{"title":"Universal Heavy Duty","offer_id":44642552086570,"sku":"FAS-DIFSHD3001","price":379.0,"currency_code":"USD","in_stock":true},{"title":"Cummins ISX \u0026 X15","offer_id":44642552119338,"sku":"FAS-DIFSHD4001","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0584\/8305\/files\/DIFSIND_ProductImage_V21_73079fee-3676-4c20-bb8a-24d3beab3a2e.png?v=1785508203","url":"https:\/\/fassmotorsports.com\/products\/fass-drop-in-series-heavy-duty","provider":"FASS Motorsports","version":"1.0","type":"link"}