{"product_id":"fass-drop-in-series-3-0l-duramax-lm2-lz0","title":"FASS Drop-In Series Diesel Fuel System - 3.0L Duramax LM2\/LZ0","description":"\u003cp\u003e\u003cstrong\u003eThis is not a lift pump.\u003c\/strong\u003e The Drop-In Series is an air separation and filtration system that retains and works with your factory in-tank lift pump.\u003c\/p\u003e\n\u003cp\u003eIt replaces the plastic OEM single-filter housing with a CNC-machined 6061-T6 billet aluminum dual-filter housing, designed and built in-house. The system runs the OEM water separator element in series with the FASS XWS3002 Extreme Water Separator.\u003c\/p\u003e\n\u003cp\u003eKeeping the OEM element is the point: it lets the factory water-in-fuel sensor stay on the dirty side, so the WIF light warns you \u003cem\u003ebefore\u003c\/em\u003e water reaches clean fuel. Systems that use a spin-on separator put the sensor on the clean side — by the time the light comes on, it's already too late.\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\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2019-2026\u003c\/td\u003e\n\u003ctd\u003eChevrolet Silverado 1500 \/ GMC Sierra 1500\u003c\/td\u003e\n\u003ctd\u003e3.0L Duramax LM2 (2019-2022) \/ LZ0 (2023-2026)\u003c\/td\u003e\n\u003ctd\u003eDIFSLZ01001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021-2026\u003c\/td\u003e\n\u003ctd\u003eChevrolet Tahoe \/ Suburban, GMC Yukon \/ Yukon XL\u003c\/td\u003e\n\u003ctd\u003e3.0L Duramax LM2 (2021-2024) \/ LZ0 (2025-2026)\u003c\/td\u003e\n\u003ctd\u003eDIFSLZ02001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021-2024\u003c\/td\u003e\n\u003ctd\u003eCadillac Escalade \/ Escalade ESV\u003c\/td\u003e\n\u003ctd\u003e3.0L Duramax LM2\u003c\/td\u003e\n\u003ctd\u003eDIFSLZ02001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eAll cab, box and SUV configurations covered. Drop-In systems are plug-and-play filtration upgrades and are not compatible with fuel sump kits.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eAlready Own a Drop-In Module?\u003c\/h3\u003e\n\u003cp\u003eEach kit here is the \u003ca href=\"\/products\/fass-drop-in-series-duramax-l5p\"\u003eDIFSL5P2001 Drop-In module\u003c\/a\u003e paired with an application-specific LZ0 adapter. If you already have the module, buy the adapter on its own:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/fass-drop-in-series-adapter-kit-lz0adpt1001\"\u003e\u003cstrong\u003eLZ0ADPT1001\u003c\/strong\u003e — Adapter Kit for Silverado 1500 \/ Sierra 1500\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/fass-drop-in-series-adapter-kit-lz0adpt2001\"\u003e\u003cstrong\u003eLZ0ADPT2001\u003c\/strong\u003e — Adapter Kit for Tahoe, Suburban, Yukon \u0026amp; Escalade\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReliability, Simplicity, Protection\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless integration.\u003c\/strong\u003e Works with the factory fuel system on GMC, Chevrolet and Cadillac applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInjector protection.\u003c\/strong\u003e Can triple the life of your injectors and injection pump — no small thing on an engine running a Denso HP5 at up to 36,260 psi.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFASS filtration.\u003c\/strong\u003e Optimizes combustion, restores horsepower, maximizes MPG. Results vary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimited lifetime warranty.\u003c\/strong\u003e Register your FASS system for coverage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdvanced Filtration Technology\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 micron absolute microglass filtration.\u003c\/strong\u003e Catches debris the 5 micron OEM filter passes straight through to your injection system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtreme Water Separator.\u003c\/strong\u003e Third-party verified to remove over 99% of free and emulsified water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAir and vapour removal.\u003c\/strong\u003e FASS's patented process strips the entrained air and vapour that damage injection systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproves reliability.\u003c\/strong\u003e Potentially triples injection system life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximized horsepower.\u003c\/strong\u003e Improved fuel atomization and restored timing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized MPG.\u003c\/strong\u003e More efficient combustion. Results vary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeace of mind.\u003c\/strong\u003e The Extreme Water Separator is a genuine fail-safe if you ever pull a bad tank of fuel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold weather confidence.\u003c\/strong\u003e Dependable starts in extreme cold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCleaner operation.\u003c\/strong\u003e Fewer DPF regens and less soot.\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\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe only drop-in 3.0L Duramax filtration system that retains the OEM water-in-fuel light\u003c\/li\u003e\n\u003cli\u003eThe only drop-in 3.0L Duramax filtration system with air separation\u003c\/li\u003e\n\u003cli\u003e100% drop-in installation — no drilling, no modifications\u003c\/li\u003e\n\u003cli\u003eRetains the factory in-tank lift pump\u003c\/li\u003e\n\u003cli\u003eCNC-machined 6061-T6 billet aluminum dual filter housing\u003c\/li\u003e\n\u003cli\u003ePerformance Radius Cuts (PRC) for smoother internal fuel flow\u003c\/li\u003e\n\u003cli\u003eHeater options available for cold weather\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\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e(1) FASS Drop-In Series air separation \/ filtration system\u003c\/li\u003e\n\u003cli\u003e(1) FASS XWS3002 Extreme Water Separator\u003c\/li\u003e\n\u003cli\u003e(1) Installation kit with all necessary hoses, fittings, bracketry and hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRecommended Add-Ons\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFASS Billet Fuel Filter Cap — upgrade the OEM plastic filter housing cap\u003c\/li\u003e\n\u003cli\u003eFASS Connect — monitor filter life and system status\u003c\/li\u003e\n\u003cli\u003eFASS Filter Pack — get ahead of your next service interval\u003c\/li\u003e\n\u003cli\u003eFASS Heater Elements — defy cold-weather gelling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy FASS\u003c\/h3\u003e\n\u003cp\u003eFASS designs fuel systems around longevity, real-world performance, and ease of installation and service. The Drop-In Series delivers proven filtration and injector protection without altering the OEM configuration — the right call for daily drivers and work trucks alike.\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":"2019-2026 Silverado 1500 \/ Sierra 1500","offer_id":44756318945322,"sku":"FAS-DIFSL5P2001+LZ0ADPT1001","price":548.99,"currency_code":"USD","in_stock":true},{"title":"2021-2026 Tahoe \/ Suburban \/ Yukon \/ Yukon XL \/ Escalade","offer_id":44756318978090,"sku":"FAS-DIFSL5P2001+LZ0ADPT2001","price":503.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0584\/8305\/files\/FASS-DIFSL5P2001.jpg?v=1787835226","url":"https:\/\/fassmotorsports.com\/products\/fass-drop-in-series-3-0l-duramax-lm2-lz0","provider":"FASS Motorsports","version":"1.0","type":"link"}