{"id":14710,"date":"2026-06-23T19:54:52","date_gmt":"2026-06-23T19:54:52","guid":{"rendered":"https:\/\/www.xtremediesel.com\/blog\/?p=14710"},"modified":"2026-06-25T13:18:28","modified_gmt":"2026-06-25T13:18:28","slug":"how-fleece-performance-solves-grid-heater-issues-on-the-6-7l-dodge-ram","status":"publish","type":"post","link":"https:\/\/www.xtremediesel.com\/blog\/2026\/06\/23\/how-fleece-performance-solves-grid-heater-issues-on-the-6-7l-dodge-ram\/","title":{"rendered":"How Fleece Performance Solves Grid Heater Issues on The 6.7L Dodge\/RAM"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Title-10.jpg\" alt=\"\" class=\"wp-image-14711\" srcset=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Title-10.jpg 1024w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Title-10-300x200.jpg 300w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Title-10-768x512.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">If you own a&nbsp;Dodge\/RAM&nbsp;truck equipped&nbsp;with the 6.7L Cummins engine,&nbsp;you\u2019ve&nbsp;likely&nbsp;heard&nbsp;about the factory grid heater issue. What was originally designed to improve&nbsp;cold-weather&nbsp;starting has become one of the most discussed reliability concerns among&nbsp;RAM 6.7L&nbsp;diesel owners. In some cases,&nbsp;the factory grid heater bolt can&nbsp;loosen, overheat, and even partially melt before&nbsp;breaking&nbsp;free. If this happens, it can allow debris to enter a cylinder and cause extensive damage. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To address this concern, Fleece Performance Engineering developed its<strong> <a href=\"https:\/\/www.xtremediesel.com\/fleece-intake-manifold-grid-heater-upgrade-fpe-cumm-ihk-0724\" type=\"link\" id=\"https:\/\/www.xtremediesel.com\/fleece-intake-manifold-grid-heater-upgrade-fpe-cumm-ihk-0724\">Intake Manifold and Grid Heater upgrade\u00a0FPE-CUMM-IHK-0724<\/a><\/strong>.\u00a0This innovative system\u00a0eliminates\u00a0the factory failure point while\u00a0maintaining\u00a0cold start functionality and maximizing airflow through the intake system.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Take a look at our quick overview of the Fleece Performance Intake Manifold and Grid Heater Upgrade and how it solves this issue. <\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Fleece Intake Manifold &amp; Grid Heater Upgrade | XDP Unboxed\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/i7BqmiPbJn4?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What&nbsp;Is&nbsp;the Grid Heater Issue on 6.7L Diesel Trucks with the Cummins&nbsp;Engine?<\/strong>&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The factory grid heater is mounted in the intake path and helps warm incoming air while starting.&nbsp;Though effective for cold-weather operation, the&nbsp;factory design uses a&nbsp;bolted connection&nbsp;(holds&nbsp;the bus bar to the manifold plate)&nbsp;that&nbsp;can become a failure point over time.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When the&nbsp;connection fails,&nbsp;the steel nut or portions of the mounting hardware can be drawn into the engine, potentially causing catastrophic internal damage. For many owners, this risk alone makes upgrading the&nbsp;factory&nbsp;setup&nbsp;a worthwhile investment.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Because of this issue, the grid heater upgrade has&nbsp;become&nbsp;a widely discussed preventative maintenance and&nbsp;reliability modification&nbsp;for RAM trucks with&nbsp;the 6.7L&nbsp;Cummins engine.&nbsp;&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"550\" src=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Fleece-vs-Stock_2.jpg\" alt=\"\" class=\"wp-image-14725\" srcset=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Fleece-vs-Stock_2.jpg 1000w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Fleece-vs-Stock_2-300x165.jpg 300w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Fleece-vs-Stock_2-768x422.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>How Does the Fleece Intake Manifold &amp; Grid Heater Upgrade Work?<\/strong>&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Rather than&nbsp;simply&nbsp;deleting&nbsp;the factory grid heater,&nbsp;Fleece redesigned the entire intake&nbsp;assembly&nbsp;to reduce restriction and improve airflow while&nbsp;maintaining&nbsp;cold-start&nbsp;functionality.&nbsp;Their&nbsp;system combines a&nbsp;cast aluminum intake&nbsp;assembly, upgraded intake plate,&nbsp;a 700-watt coil heating element, wiring harnesses, hardware,&nbsp;and all required gaskets&nbsp;into&nbsp;a complete installation package.<sup>1,2&nbsp;<\/sup><sup>&nbsp;<\/sup>&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This design allows owners to address a known weak point&nbsp;without&nbsp;sacrificing&nbsp;reliable starts&nbsp;in colder climates.&nbsp;&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"551\" src=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Open-Box_1-1.jpg\" alt=\"\" class=\"wp-image-14732\" srcset=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Open-Box_1-1.jpg 1000w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Open-Box_1-1-300x165.jpg 300w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Open-Box_1-1-768x423.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Heavy-Duty Construction Built for Long-Term Reliability<\/strong>&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">One of the first things that stands out about the Fleece intake manifold is&nbsp;its&nbsp;construction.&nbsp;Made&nbsp;from&nbsp;precision-machined&nbsp;cast aluminum, the manifold&nbsp;delivers a durable, factory-style appearance&nbsp;while offering the strength expected from a premium diesel performance&nbsp;component.&nbsp;&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"737\" src=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Manifold_3-1.jpg\" alt=\"\" class=\"wp-image-14733\" srcset=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Manifold_3-1.jpg 1000w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Manifold_3-1-300x221.jpg 300w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Manifold_3-1-768x566.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The&nbsp;smooth&nbsp;casting and&nbsp;precision&nbsp;machining provide a professional fit and finish that blends seamlessly into the engine bay. Fleece also incorporates a threaded port for an&nbsp;optional&nbsp;secondary heater assembly, providing flexibility for trucks&nbsp;operating&nbsp;in extreme cold-weather environments.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For owners not using the optional heater, the supplied plug features a pre-drilled 1\/8-inch NPT port that can be used&nbsp;for&nbsp;sensors, injectables like water meth or nitrous,&nbsp;or auxiliary monitoring&nbsp;equipment.&nbsp;&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Does the Fleece Grid Heater Upgrade Affect Cold Starts?<\/strong>&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Many intake upgrades focus on performance, but the Fleece system takes a balanced approach.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">By&nbsp;removing the restrictive OE grid heater&nbsp;arrangement&nbsp;and redesigning the intake path, airflow through&nbsp;the&nbsp;intake system is improved while still&nbsp;retaining&nbsp;cold-start functionality. The primary heating element is positioned directly in the&nbsp;intake&nbsp;airstream for efficient operation during&nbsp;cold weather.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The system&nbsp;uses&nbsp;a 700-watt coil heater and can be configured with an optional secondary heater for&nbsp;additional&nbsp;cold-weather&nbsp;capability. According to Fleece, with the optional secondary heater installed, the system offers proven startability down to&nbsp;-31\u00b0F&nbsp;(-35\u00b0C).<sup>1<\/sup>&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For many owners, this makes the upgrade a reliability improvement first and an airflow enhancement second.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"563\" src=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Heater_Tool-Box-1.jpg\" alt=\"\" class=\"wp-image-14735\" srcset=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Heater_Tool-Box-1.jpg 1000w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Heater_Tool-Box-1-300x169.jpg 300w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Heater_Tool-Box-1-768x432.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What Comes&nbsp;With&nbsp;the Fleece Intake Manifold &amp; Grid Heater Upgrade?&nbsp;<\/strong>&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Another standout feature of the Fleece Intake Manifold &amp; Grid Heater Upgrade is the completeness of the kit.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Rather than forcing&nbsp;installers to source&nbsp;additional&nbsp;components, Fleece includes the hardware, wiring, and gaskets needed for&nbsp;full&nbsp;installation.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Components include:&nbsp;&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cast Aluminum Intake Manifold&nbsp;<\/li>\n\n\n\n<li>Upgraded Intake Plate&nbsp;<\/li>\n\n\n\n<li>700-Watt Coil Heating Element&nbsp;<\/li>\n\n\n\n<li>Wiring Harnesses&nbsp;<\/li>\n\n\n\n<li>Installation Hardware&nbsp;<\/li>\n\n\n\n<li>Intake Gaskets&nbsp;<\/li>\n\n\n\n<li>Intake Runner Gaskets&nbsp;<\/li>\n\n\n\n<li>Throttle Valve Gaskets&nbsp;<\/li>\n\n\n\n<li>EGR Valve Gaskets&nbsp;<\/li>\n\n\n\n<li>Crossover Tube Gaskets&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The kit also includes loom-protected, heat-shrunk wiring with protective boots and pre-labeled connections to simplify installation.&nbsp;&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"665\" src=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Full-Kit.jpg\" alt=\"\" class=\"wp-image-14724\" srcset=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Full-Kit.jpg 1000w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Full-Kit-300x200.jpg 300w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Full-Kit-768x511.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Additional Features Owners Will Appreciate<\/strong>&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Fleece&nbsp;designed this system with practicality in mind. The upgrade reuses the&nbsp;factory&nbsp;high-pressure&nbsp;fuel injector lines,&nbsp;eliminating&nbsp;the need for custom replacement lines. The kit also includes an intake air temperature sensor extension harness for applicable cab-and-chassis models.<sup>2<\/sup>&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">These details help streamline installation while&nbsp;maintaining&nbsp;compatibility&nbsp;with factory components.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"840\" height=\"840\" src=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Connector-2.jpg\" alt=\"\" class=\"wp-image-14728\" srcset=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Connector-2.jpg 840w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Connector-2-300x300.jpg 300w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Connector-2-150x150.jpg 150w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Connector-2-768x768.jpg 768w\" sizes=\"auto, (max-width: 840px) 100vw, 840px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Is a Grid Heater Upgrade Worth It&nbsp;for Your&nbsp;6.7L&nbsp;Truck with the&nbsp;Cummins Engine?<\/strong>&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For many diesel owners, the Fleece Intake&nbsp;Manifold&nbsp;and Grid Heater Upgrade delivers the best of both worlds.&nbsp;It removes a commonly discussed factory failure point while improving airflow and maintaining cold-weather functionality.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Benefits&nbsp;include:&nbsp;&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Eliminates&nbsp;The&nbsp;Failure-Prone Factory Grid Heater Design&nbsp;<\/li>\n\n\n\n<li>Improves Intake Airflow&nbsp;<\/li>\n\n\n\n<li>Retains Cold-Start Capability&nbsp;<\/li>\n\n\n\n<li>Heavy-Duty Cast Aluminum Construction&nbsp;<\/li>\n\n\n\n<li>Complete Installation Package&nbsp;<\/li>\n\n\n\n<li>Reuses Factory Fuel Injector Lines&nbsp;<\/li>\n\n\n\n<li>Supports Optional Secondary Heater Installation&nbsp;&nbsp;<\/li>\n\n\n\n<li>Provides&nbsp;Peace&nbsp;Of Mind For Long-Term Ownership&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Whether your truck is a daily driver, tow rig, work truck, or performance build, this upgrade helps address one of the most common concerns&nbsp;associated&nbsp;with the 6.7L platform.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"563\" src=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Full-Kit_Tool-Box.jpg\" alt=\"\" class=\"wp-image-14736\" srcset=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Full-Kit_Tool-Box.jpg 1000w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Full-Kit_Tool-Box-300x169.jpg 300w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/Full-Kit_Tool-Box-768x432.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What is The Best Solution for the 6.7L RAM Grid Heater Problem?<\/strong>&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The factory grid heater has become&nbsp;one&nbsp;of the most discussed reliability concerns for&nbsp;Dodge RAM 2500\/3500\/4500\/5500&nbsp;trucks with the 6.7L Cummins engine. As a result, manufacturers have developed&nbsp;a&nbsp;solution that&nbsp;addresses&nbsp;the&nbsp;issue while preserving the cold-start&nbsp;performance&nbsp;that&nbsp;diesel owners&nbsp;rely on. The Fleece Intake Manifold and Grid&nbsp;Heater Upgrade&nbsp;represents&nbsp;one of the more comprehensive approaches,&nbsp;combining improved airflow, integrated heating technology, and&nbsp;a redesigned&nbsp;intake system to&nbsp;eliminate&nbsp;a&nbsp;common failure point without&nbsp;sacrificing functionality.&nbsp;&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.xtremediesel.com\/fleece-intake-manifold-grid-heater-upgrade-fpe-cumm-ihk-0724\"><img loading=\"lazy\" decoding=\"async\" width=\"908\" height=\"177\" src=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/CTA.jpg\" alt=\"\" class=\"wp-image-14712\" srcset=\"https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/CTA.jpg 908w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/CTA-300x58.jpg 300w, https:\/\/www.xtremediesel.com\/blog\/wp-content\/uploads\/2026\/06\/CTA-768x150.jpg 768w\" sizes=\"auto, (max-width: 908px) 100vw, 908px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sources&nbsp;<br>1&nbsp;https:\/\/www.fleeceperformance.com\/fleece-performance-intake-and-grid-heater-kit.html&nbsp;&nbsp;<br>2&nbsp;https:\/\/www.fleeceperformance.com\/media\/wysiwyg\/FPE-2026-160_FPE-CUMM-IHK-0724.pdf&nbsp;&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you own a&nbsp;Dodge\/RAM&nbsp;truck equipped&nbsp;with the 6.7L Cummins engine,&nbsp;you\u2019ve&nbsp;likely&nbsp;heard&nbsp;about the factory grid heater issue. What was originally designed to improve&nbsp;cold-weather&nbsp;starting has become one of the most discussed reliability concerns among&nbsp;RAM 6.7L&nbsp;diesel owners. In some cases,&nbsp;the factory grid heater bolt can&nbsp;loosen, overheat, and even partially melt before&nbsp;breaking&nbsp;free. If this happens, it can allow debris to enter [&hellip;]<\/p>\n","protected":false},"author":27,"featured_media":14711,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3],"tags":[],"class_list":["post-14710","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dodge-ram","the-post-small"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How Fleece Performance Solves Grid Heater Issues on The 6.7L Dodge\/RAM - XDP Blog<\/title>\n<meta name=\"description\" content=\"Learn how the Fleece Intake Manifold and grid heater upgrade helps solve common grid heater issues for your Dodge\/Ram 6.7L engine.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.xtremediesel.com\/blog\/2026\/06\/23\/how-fleece-performance-solves-grid-heater-issues-on-the-6-7l-dodge-ram\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How Fleece Performance Solves Grid Heater Issues on The 6.7L Dodge\/RAM - 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