{"product_id":"uf106-def-urea-filter-kit-for-dd13-dd15-replaces-4388378-a0001421089","title":"UF106 DEF Urea Filter Kit for DD13 DD15 – Replaces 4388378 A0001421089","description":"\u003ch1\u003eWhy Your Truck Needs This DEF Filter?\u003c\/h1\u003e\n\u003cp\u003e\u003cstrong\u003e  \u003c\/strong\u003eThe DEF (Diesel Exhaust Fluid) filter is a small but critical part of your SCR emissions system. It sits between the DEF tank and the dosing pump, trapping debris, crystallized urea and contaminants before they can reach — and destroy — your injector and dosing pump. A clogged DEF filter starves the SCR system of clean fluid, which triggers fault codes, forces the engine into derate (limp mode), and can eventually take your rig off the road. This direct-fit replacement kit restores proper DEF flow and protects the most expensive parts of your aftertreatment system.\u003c\/p\u003e\n\u003ch3\u003eDirect OEM Replacement, Fraction of the Dealer Price\u003c\/h3\u003e\n\u003cp\u003eThis filter kit is engineered to the exact fit and filtration spec of the factory part. It drops into your existing DEF filter housing with no modifications, no special tools, and no dealer programming — a true 15-minute driveway fix. Replaces OEM part numbers 4388378 · A0001421089 · 2122909PE. Filter reference: UF106. Type: DEF (urea) pump \/ dosing filter, exhaust aftertreatment.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/6bcbbfed-54fd-44c7-bdb8-f7ae27807e6b.__CR0,0,1940,1200_PT0_SX970_V1___.jpg\" alt=\"1\"\u003e\u003c\/p\u003e\n\u003ch1\u003eKey Features\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eDirect fit for Detroit DD13 \u0026amp; DD15 — no cutting, splicing, or fabrication\u003c\/li\u003e\n\u003cli\u003eProtects the DEF dosing pump \u0026amp; injector from debris and urea crystallization\u003c\/li\u003e\n\u003cli\u003eRestores lost power — clears low DEF-pressure and derate fault codes \u003c\/li\u003e\n\u003cli\u003eOEM-spec filtration media — traps contaminants without restricting flow\u003c\/li\u003e\n\u003cli\u003eComplete kit — everything needed for a clean, leak-free service\u003c\/li\u003e\n\u003cli\u003eHeavy-duty construction — built for heat, vibration and urea chemistry\u003c\/li\u003e\n\u003cli\u003eFraction of dealer cost — same fit and function, far lower price\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1\u003eSpecifications\u003c\/h1\u003e\n\u003ctable width=\"100%\" style=\"width: 100%; height: 191.078px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 50.9219px;\"\u003e\n\u003ctd style=\"width: 26.8004%; text-align: center; height: 50.9219px;\"\u003e\n\u003cblockquote\u003e\n\u003ch3 style=\"text-align: center;\"\u003e Item\u003c\/h3\u003e\n\u003c\/blockquote\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 72.8511%; text-align: center; height: 50.9219px;\"\u003e\n\u003cblockquote\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/h3\u003e\n\u003c\/blockquote\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 26.8004%; text-align: center; height: 19.5938px;\"\u003e\n\u003cp style=\"text-align: center;\"\u003eProduct Type\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 72.8511%; text-align: center; height: 19.5938px;\"\u003e\n\u003cp\u003eDEF \/ Diesel Exhaust Fluid Urea Filter (Kit)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 30.1406px;\"\u003e\n\u003ctd style=\"width: 26.8004%; text-align: center; height: 30.1406px;\"\u003e\n\u003cp style=\"text-align: center;\"\u003eFilter Reference\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 72.8511%; text-align: center; height: 30.1406px;\"\u003e\n\u003cp\u003eUF106\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.8004%; text-align: center;\"\u003e\n\u003cp style=\"text-align: center;\"\u003eOEM Cross-Reference\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 72.8511%; text-align: center;\"\u003e\n\u003cp\u003e4388378 · A0001421089 · 2122909PE\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.8004%; text-align: center;\"\u003e\n\u003cp style=\"text-align: center;\"\u003eFiltration Media\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 72.8511%; text-align: center;\"\u003e\n\u003cp\u003eHigh-efficiency pleated synthetic media\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.8004%; text-align: center;\"\u003e\n\u003cp style=\"text-align: center;\"\u003eFunction\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 72.8511%; text-align: center;\"\u003e\n\u003cp\u003eProtects SCR dosing pump \u0026amp; injector\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.8004%; text-align: center;\"\u003e\n\u003cp style=\"text-align: center;\"\u003eSystem\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 72.8511%; text-align: center;\"\u003e\n\u003cp\u003eSCR \/ Aftertreatment (exhaust)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.8004%; text-align: center;\"\u003e\n\u003cp style=\"text-align: center;\"\u003eCondition\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 72.8511%; text-align: center;\"\u003e\n\u003cp\u003e100% New, Aftermarket\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.8004%; text-align: center;\"\u003e\n\u003cp style=\"text-align: center;\"\u003eInstallation\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 72.8511%; text-align: center;\"\u003e\n\u003cp\u003eDirect replacement, no special tools\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/c69003a4-70d7-4245-aa7d-c8b5f938a8a1.__CR0,0,1940,1200_PT0_SX970_V1___.jpg\" alt=\"7\"\u003e\u003c\/p\u003e\n\u003ch1\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/dd39b7d0-bc9a-473c-bfad-2f02faac3e5a.__CR0,0,1940,1200_PT0_SX970_V1___.jpg\" alt=\"2\"\u003eCompatibility\u003c\/h1\u003e\n\u003ch3\u003eDetroit Diesel (DD-Series)\u003c\/h3\u003e\n\u003cp\u003eDetroit DD13 :\u003c\/p\u003e\n\u003cp\u003eFreightliner Cascadia, Western Star 5700XE \/ 4900\u003c\/p\u003e\n\u003cp\u003eFreightliner Cascadia、Western Star 5700XE \/ 4900\u003c\/p\u003e\n\u003cp\u003eDetroit DD15 :\u003c\/p\u003e\n\u003cp\u003eFreightliner Cascadia, Western Star 5700XE \/ 4900\u003c\/p\u003e\n\u003cp\u003eFreightliner Cascadia、Western Star 5700XE \/ 4900\u003c\/p\u003e\n\u003ch3\u003eCummins (select engines, DEF filter compatible)\u003c\/h3\u003e\n\u003cp\u003eCummins X15 \/ ISX\u003c\/p\u003e\n\u003cp\u003eQSK19 \/ QSK23 \/ QSK60 \/ QSK78 \/ QSK95 \/ QST30\u003c\/p\u003e\n\u003ch3\u003eMercedes-Benz \/ DAF (select EU trucks, compatible)\u003c\/h3\u003e\n\u003cp\u003eMercedes-Benz OM471 \/ OM472 \/ OM473\u003c\/p\u003e\n\u003cp\u003eDAF MX Series\u003c\/p\u003e\n\u003ch3\u003e⚠️Please verify before ordering:\u003c\/h3\u003e\n\u003cp\u003eDEF filter housing styles vary slightly by model year \/ emission standard (EPA10 \/ GHG14 \/ GHG17). Please verify against the part number on your existing filter (4388378 \/ A0001421089 \/ 2122909PE) or contact us.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch1\u003eCross-Reference Numbers\u003c\/h1\u003e\n\u003cp\u003e4388378 (Fleetguard · Cummins)\u003c\/p\u003e\n\u003cp\u003eA0001421089 (Mercedes-Benz \/ Detroit Diesel)\u003c\/p\u003e\n\u003cp\u003e2122909PE\u003c\/p\u003e\n\u003cp\u003eUF106\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/e2faedb3-ebce-445e-8339-e3da19066fb1.__CR0,0,1940,1200_PT0_SX970_V1___.jpg\" alt=\"3\"\u003e\u003c\/p\u003e\n\u003ch1\u003eWhat's in the Box?\u003c\/h1\u003e\n\u003cp\u003e1 × DEF urea filter (UF106 cartridge)\u003c\/p\u003e\n\u003cp\u003eReplacement O-ring seals (as included)\u003c\/p\u003e\n\u003cp\u003eNote: Package contents are as per the actual product.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cimg src=\"https:\/\/m.media-amazon.com\/images\/S\/aplus-media-library-service-media\/b0d90c7e-7cbd-4549-9d9d-ecfb77892dcf.__CR0,0,1940,1200_PT0_SX970_V1___.jpg\" alt=\"6\"\u003e\u003c\/p\u003e\n\u003ch1\u003eFAQ\u003c\/h1\u003e\n\u003ch3\u003eQ1: Will this fix my DD15 DEF low-pressure \/ derate fault codes?\u003c\/h3\u003e\n\u003cp\u003eA1: If the codes point to low DEF pressure \/ restricted flow and the fluid level is normal, a clogged filter is the most common cause. Replacing it restores DEF flow and, in most cases, clears the derate and returns full power. If the code persists after replacement, inspect the DEF pump, injector, or crystallized urea lines.\u003c\/p\u003e\n\u003ch3\u003eQ2: How do I confirm this filter fits my truck?\u003c\/h3\u003e\n\u003cp\u003eA2: The most reliable way is to check the part number on your existing filter — if it matches 4388378, A0001421089 or 2122909PE, it's a direct swap. You can also send us your truck model, engine (DD13 \/ DD15 \/ X15, etc.) and year, and we'll confirm for you.\u003c\/p\u003e\n\u003ch3\u003eQ3: Does installation require a dealer or computer programming?\u003c\/h3\u003e\n\u003cp\u003eA3: No. This is a purely mechanical drop-in replacement — swap the cartridge and install the seals. No ECU flashing or programming needed; a skilled mechanic can finish in about 15 minutes.\u003c\/p\u003e\n\u003ch3\u003eQ4: How often should I replace the DEF filter?\u003c\/h3\u003e\n\u003cp\u003eA4: Follow the OEM service interval, or inspect every 100,000 miles \/ 160,000 km. If you frequently use lower-quality DEF fluid or have already seen DEF pressure warnings, replace it sooner.\u003c\/p\u003e\n\u003ch3\u003eQ5: Why does regular DEF fluid clog the filter?\u003c\/h3\u003e\n\u003cp\u003eA5: Low-quality or improperly stored DEF fluid crystallizes and sheds impurities, which build up on the filter and cause reduced flow, pressure warnings, and even pump damage. Use ISO 22241-compliant DEF and keep the system sealed.\u003c\/p\u003e\n\u003ch3\u003eQ6: Is this a genuine OEM or aftermarket part?\u003c\/h3\u003e\n\u003cp\u003eA6: This is a high-quality aftermarket part, manufactured to OEM specifications and dimensions. It fits and functions identically to the factory part at a much lower price — ideal for cost-conscious owner-operators, fleets, and repair shops.\u003c\/p\u003e\n\u003ch3\u003eQ7: Who is WAL?\u003c\/h3\u003e\n\u003cp\u003eA7: \u003cmeta charset=\"utf-8\"\u003e\u003cspan class=\"a-text-bold\"\u003eWAL\u003c\/span\u003e\u003cspan\u003e Technology manufactures original equipment components for major heavy-duty truck fleets and engine builders globally, ensuring exact fitment and heavy-haul reliability.Engineered to meet demanding emission regulations worldwide (EPA \/ Euro VI), our filtration solutions are co-developed across 3 Global R\u0026amp;D Centers in Detroit (USA), London (UK), and Asia.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cspan\u003eQ8: \u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003eWhy choose our UF106 filter kit?\u003c\/h3\u003e\n\u003cp\u003eA8: \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003ePrevents common fleet failures: USA Metal Vent Valve stops warping \u0026amp; leaks across extreme temperatures; Swiss Media delivers 99.1% efficiency @ 20µm \u0026amp; +15% dust capacity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"WAL","offers":[{"title":"Default Title","offer_id":51471732998390,"sku":"WAL-NSL01","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0606\/3836\/3894\/files\/image_1_0e54cd86-62b6-4989-838e-3ca1a0450446.jpg?v=1786944240","url":"https:\/\/ifjf.net\/products\/uf106-def-urea-filter-kit-for-dd13-dd15-replaces-4388378-a0001421089","provider":"iFJF Direct","version":"1.0","type":"link"}