{"product_id":"caterpillar-399-0171-exhaust-gas-recirculation-egr-valve-kit","title":"Caterpillar 399-0171 Exhaust Gas Recirculation (EGR) Valve Kit","description":"\u003cdiv class=\"position-relative\"\u003e\n\u003cdiv id=\"compatibilityExpander\" class=\"transition-expand\"\u003e\n\u003cdiv class=\"mt-3\"\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003eThe genuine \u003cspan class=\"\"\u003e\u003ca class=\"H23r4e\" rel=\"noopener\" href=\"https:\/\/www.google.com\/goto?url=CAESaQHrOzAVKn7OXETn0QfBDuKaLiOWyyp2W4UI3yZ12uP426eGPXqc4D5kUKaFGebx_8-z8CwGc6-FBrr7PzeNupv95WQB6AzHyqnO9QmPBqz-zgtzcHuthDQhqm5qilX-V0zi8TJkx6NzcQ\" target=\"_blank\"\u003eCat 399-0171\u003c\/a\u003e\u003c!--TgQPHd|||[[\u0026quot;https:\/\/parts.cat.com\/en\/catcorp\/product\/399-0171\u0026quot;,null,null,[null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,[{\u0026quot;1218\u0026quot;:[16,null,null,null,[1]]}]],16,null,\u0026quot;399-0171: Exhaust Gas Recirculation Valve Kit - Cat® Parts\u0026quot;,\u0026quot;The Exhaust Gas Recirculation Valve Kit is a set of components to control emissions. It redirects a portion of exhaust gases back into the engine\u0026#39;s combustion chamber, lowering peak temperatures during combustion. This process reduces nitrogen oxide emissions, contributing to environmental compliance. The Valve Kit enhances engine efficiency by optimizing the air-fuel mixture, leading to improved fuel economy and performance. Attributes:• Optimizes the air-fuel mixture for improved engine efficiency.• Reduces nitrogen oxide emissions by redirecting a portion of exhaust gases.• Contributes to better fuel economy by enhancing combustion processes.Applications: The Exhaust Gas Recirculation Valve Kit is used ...\u0026quot;,null,null,\u0026quot;https:\/\/encrypted-tbn2.gstatic.com\/faviconV2?url\\u003dhttps:\/\/parts.cat.com\\u0026client\\u003dAIM\\u0026size\\u003d128\\u0026type\\u003dFAVICON\\u0026fallback_opts\\u003dTYPE,SIZE,URL\u0026quot;,[[1789677302140497,90872123,2147683186],null,null,null,null,[[0,10]]],null,\u0026quot;bf675be2-e8a9-4971-acdb-76a37031a7ca\u0026quot;]]--\u003e\u003c\/span\u003e Exhaust Gas Recirculation (EGR) Valve Kit is \u003cmark class=\"MAeH\"\u003ea complete set of critical components designed to govern emissions and enhance heavy engine combustion efficiency\u003c!--TgQPHd|||[[[null,null,null,null,null,null,null,null,null,null,null,null,[247864,null,0]]]]--\u003e\u003c\/mark\u003e\n\u003cdiv tabindex=\"0\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv tabindex=\"0\"\u003e\u003cbr\u003e\u003c\/div\u003e\n. By redirecting a metered portion of spent exhaust gases back into the engine's combustion chamber, this valve kit successfully lowers peak combustion temperatures. This process drastically reduces harmful nitrogen oxide (NOx) emissions, ensuring your industrial machinery remains fully compliant with strict environmental standards. Additionally, installing this genuine factory kit optimizes the air-fuel mixture, resulting in sharper engine response, better fuel economy, and reduced internal engine knocking.\u003cspan\u003e [\u003ca href=\"https:\/\/www.google.com\/goto?url=CAESaQHrOzAVjypa65TmQmW24Es79esEFgmyi2VIPkx928UmUc1ctlqFzI6kdImeA2EXp3WyHsqLvrlqyUvCl5J-ItmTY37S5LKKBEW9wU9tCM0uQ9GSrnBW1l-qeHxxgBop4Ha_kWwWJX_uUw\"\u003e1\u003c\/a\u003e, \u003ca href=\"https:\/\/www.google.com\/goto?url=CAESaQHrOzAVKn7OXETn0QfBDuKaLiOWyyp2W4UI3yZ12uP426eGPXqc4D5kUKaFGebx_8-z8CwGc6-FBrr7PzeNupv95WQB6AzHyqnO9QmPBqz-zgtzcHuthDQhqm5qilX-V0zi8TJkx6NzcQ\"\u003e2\u003c\/a\u003e]\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003e⭐ Key Features \u0026amp; Benefits\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eAdvanced NOx Reduction\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e — Efficiently channels exhaust gases to lower combustion chamber temperatures, ensuring environmental compliance on tight jobsites.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/www.google.com\/goto?url=CAESaQHrOzAVKn7OXETn0QfBDuKaLiOWyyp2W4UI3yZ12uP426eGPXqc4D5kUKaFGebx_8-z8CwGc6-FBrr7PzeNupv95WQB6AzHyqnO9QmPBqz-zgtzcHuthDQhqm5qilX-V0zi8TJkx6NzcQ\"\u003e1\u003c\/a\u003e]\u003c\/span\u003e\u003cspan\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eOptimized Air-Fuel Mix\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e — Delivers precise metering to fine-tune the internal air-to-fuel ratio, boosting overall engine performance and fuel savings.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/www.google.com\/goto?url=CAESaQHrOzAVKn7OXETn0QfBDuKaLiOWyyp2W4UI3yZ12uP426eGPXqc4D5kUKaFGebx_8-z8CwGc6-FBrr7PzeNupv95WQB6AzHyqnO9QmPBqz-zgtzcHuthDQhqm5qilX-V0zi8TJkx6NzcQ\"\u003e1\u003c\/a\u003e]\u003c\/span\u003e\u003cspan\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eComplete System Hardware\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e — Packaged as a comprehensive kit to give technicians the necessary matching seals, gaskets, or adapters required for a leak-free repair.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003ePrevents Engine Knocking\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e — Keeps combustion metrics stable under heavy operational loads, actively shielding pistons and cylinders from pre-detonation stress.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e [\u003ca href=\"https:\/\/www.google.com\/goto?url=CAESaQHrOzAVjypa65TmQmW24Es79esEFgmyi2VIPkx928UmUc1ctlqFzI6kdImeA2EXp3WyHsqLvrlqyUvCl5J-ItmTY37S5LKKBEW9wU9tCM0uQ9GSrnBW1l-qeHxxgBop4Ha_kWwWJX_uUw\"\u003e1\u003c\/a\u003e]\u003c\/span\u003e\u003cspan\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eGenuine OEM Durability\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e — Built to Caterpillar's exact engineering standards, outlasting generic aftermarket replacements under high-heat, high-vibration conditions.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003e🔧 Uses \/ Applications\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eEmissions System Overhauls\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e — Replaces jammed, carbon-fouled, or failing factory EGR valves to clear check-engine codes and restore full engine power.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eHeavy Fleet Compliance Maintenance\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e — Upkeeps active earthmoving, material handling, or power generation equipment to pass mandatory environmental field inspections.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eCombustion Temperature Control\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e — Regulates critical internal thermal thresholds during prolonged, severe-duty machine cycles or high-ambient-heat operations.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003ePreventative Tier 4 Final Care\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e — Installed during major engine service intervals to prevent poor fuel economy or exhaust blockages before they cause severe downtime.\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003e📊 Technical Specifications\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003cdiv class=\"Fv6NCb\"\u003e\n\u003ctable class=\"NRefec\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"cZCYO\"\u003e\n\u003cth class=\"iry6k\" colspan=\"undefined\"\u003eSpecification\u003c!--TgQPHd|||[]--\u003e\n\u003c\/th\u003e\n\u003cth class=\"iry6k\" colspan=\"undefined\"\u003eDetail\u003c!--TgQPHd|||[]--\u003e\n\u003c\/th\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003e\n\u003cstrong class=\"rQesXe MPyX\"\u003ePart Type\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003eExhaust Gas Recirculation (EGR) Valve Kit\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003e\n\u003cstrong class=\"rQesXe MPyX\"\u003ePosition\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003eEngine Exhaust-to-Intake Manifold Junction\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003e\n\u003cstrong class=\"rQesXe MPyX\"\u003ePart Number\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003e399-0171 \/ 3990171\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003e\n\u003cstrong class=\"rQesXe MPyX\"\u003eMaterial\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003eHigh-Grade Thermal Alloy \/ Corrosion Resistant Components\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003e\n\u003cstrong class=\"rQesXe MPyX\"\u003eFitment\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003eCaterpillar Tier 4 \/ NRS Equipped Diesel Engines\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003e\n\u003cstrong class=\"rQesXe MPyX\"\u003eCondition\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003eBrand New (Surplus Stock)\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003e\n\u003cstrong class=\"rQesXe MPyX\"\u003eInstallation\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003eDirect-Fit Replacement Kit\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!--TgQPHd|||[[1,0,0,2,null,\u0026quot;\u0026quot;]]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003e🔄 Cross-Reference \/ Interchange Table\u003cspan\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/div\u003e\n\u003cdiv class=\"Fv6NCb\"\u003e\n\u003ctable class=\"NRefec\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"cZCYO\"\u003e\n\u003cth class=\"iry6k\" colspan=\"undefined\"\u003eManufacturer\u003c!--TgQPHd|||[]--\u003e\n\u003c\/th\u003e\n\u003cth class=\"iry6k\" colspan=\"undefined\"\u003eEquivalent Part Number\u003c!--TgQPHd|||[]--\u003e\n\u003c\/th\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003e\n\u003cstrong class=\"rQesXe MPyX\"\u003eCaterpillar (OEM)\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003e399-0171\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003e\n\u003cstrong class=\"rQesXe MPyX\"\u003eCaterpillar (Alt)\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003e3990171\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003e\n\u003cstrong class=\"rQesXe MPyX\"\u003eRelated Cat Groups\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003eSupports NOx Reduction Systems (NRS) alongside 579-9317 or similar cooling lines.\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003e\n\u003cstrong class=\"rQesXe MPyX\"\u003eAdditional Notes\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\"\u003eAlways use the included premium seals during installation to prevent pressurized exhaust bypass leaks.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003eExternal packaging has been subjected to external smoke damage\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"C082 - Caterpillar","offers":[{"title":"Default Title","offer_id":48869420957915,"sku":"WALL - NNII2 - 399-0171","price":799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0504\/9578\/3088\/files\/Photoroom_002_20240328_091707.jpg?v=1711653067","url":"https:\/\/freemanliquidators.com\/products\/caterpillar-399-0171-exhaust-gas-recirculation-egr-valve-kit","provider":"Freeman Liquidators","version":"1.0","type":"link"}