{"product_id":"docs-diesel-fuel-water-separator-for-6-7l-cummins-ram-2500-3500-2025-2026-oe-fit-3-micron-water-particle-protection","title":"Doc's Diesel Fuel Water Separator for 6.7L Cummins RAM 2500\/3500 (2025–2026) — OE-fit, 3-micron water \u0026 particle protection","description":"\u003cp\u003e\u003cstrong\u003eDoc's Diesel Fuel Water Separator DGF431 is a direct-fit replacement for RAM 6.7L Cummins 2500\/3500\/4500\/5500 (2025–2026) that separates water and captures contaminants to protect your fuel system.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen you're maintaining a late-model RAM with the 6.7L Cummins, choosing the correct fuel\/water separator matters for fuel system longevity and reliable performance. Doc's Diesel engineered the DGF431 assembly to match OE form and function while providing proven contaminant removal. Independent tests show the DGF430 and DGF401 family members achieve high particulate and water separation efficiency down to 3 microns, and this DGF431 unit ships as a complete service kit so you replace every matched component at once.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this separator protect my diesel engine on the road?\u003c\/h3\u003e\n\u003cp\u003eThe separator removes free water and filters out dirt, rust, and other particulates before fuel reaches the high-pressure system. By keeping contaminants out of injectors and fuel pumps, it reduces wear and helps maintain consistent combustion and power delivery.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSeparates water from fuel to prevent corrosion in fuel components\u003c\/li\u003e\n  \u003cli\u003eCaptures particles down to 3 microns per independent testing of related Doc's components\u003c\/li\u003e\n  \u003cli\u003eReduces risk of clogged filters and injector damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this unit fit my RAM 2500\/3500\/4500\/5500 6.7L Cummins (2025–2026)?\u003c\/h3\u003e\n\u003cp\u003eYes — the DGF431 is manufactured specifically for 6.7L Cummins engines in RAM 2500, 3500, 4500, and 5500 models for model years 2025–2026. Use the fitment card on the product page to verify your exact year and truck configuration before ordering to ensure a perfect match.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngine compatibility: 6.7L Cummins (diesel)\u003c\/li\u003e\n  \u003cli\u003eModel years: 2025 and 2026 for RAM 2500\/3500\/4500\/5500\u003c\/li\u003e\n  \u003cli\u003eConfirm fit via the online fitment card prior to purchase\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the box and how easy is installation?\u003c\/h3\u003e\n\u003cp\u003eThe DGF431 kit ships as a matched assembly so you replace every required component during service, minimizing part mismatch and installation time. Installation follows standard fuel\/water separator service procedures; some owners can complete the swap with basic tools, while others may prefer a professional service for torqueing and leak checks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes the DGF431 fuel\/water separator assembly\u003c\/li\u003e\n  \u003cli\u003eAll parts matched to the application for a single-order service\u003c\/li\u003e\n  \u003cli\u003eFits OE mounting points — typical DIY swap for experienced owners\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow often should I change this fuel\/water separator?\u003c\/h3\u003e\n\u003cp\u003eService intervals vary with driving conditions and manufacturer recommendations, but routine replacement preserves filtration efficiency. Doc's guidance and general best practice suggest changing the separator between 5,000 and 10,000 miles, with 15,000 miles as an upper limit before replacement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRecommended: every 5,000–10,000 miles for best protection\u003c\/li\u003e\n  \u003cli\u003eMaximum interval: 15,000 miles unless manufacturer advises otherwise\u003c\/li\u003e\n  \u003cli\u003eShorten interval under harsh conditions: off-road, frequent short trips, or poor fuel quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The DGF431 from Doc's Diesel is aimed at RAM owners with the 6.7L Cummins who want an exact-fit replacement that restores proper water separation and filtration. It's well suited to owner-mechanics who perform routine fuel-system service, fleet managers seeking reliable maintenance parts, and anyone who prefers a matched-component kit to reduce installation guesswork while protecting expensive fuel-system components.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this separator fit my 2025 RAM 2500 with the 6.7L Cummins?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the DGF431 is made for 6.7L Cummins RAM 2500 (2025–2026); confirm your exact configuration with the fitment card.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I replace the Doc's Diesel fuel\/water separator?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Replace every 5,000–10,000 miles for best protection; do not exceed 15,000 miles without inspection.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Doc's Diesel","offers":[{"title":"Default Title","offer_id":48080830005406,"sku":"B0GGY9BBVV","price":171.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/docs-diesel-dgf431-front-assembly.jpg?v=1785789371","url":"https:\/\/northtrailauto.ca\/products\/docs-diesel-fuel-water-separator-for-6-7l-cummins-ram-2500-3500-2025-2026-oe-fit-3-micron-water-particle-protection","provider":"North Trail Auto","version":"1.0","type":"link"}