{"product_id":"ppe-117000363-upper-down-pipe-flange-gasket","title":"PPE 117000363 Upper Down Pipe Flange Gasket | 2017-2026 GM Sierra\/Silverado 2500HD\/3500HD 6.6L Duramax","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits 2017-2026 Silverado and Sierra HD\u003c\/li\u003e\n\u003cli\u003eDesigned for 6.6L Duramax engines\u003c\/li\u003e\n\u003cli\u003eConstructed from 301 stainless steel\u003c\/li\u003e\n\u003cli\u003eHandles high exhaust temperatures\u003c\/li\u003e\n\u003cli\u003eEnsures secure exhaust flange seal\u003c\/li\u003e\n\u003cli\u003eHelps prevent exhaust leaks\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM down pipes\u003c\/li\u003e\n\u003cli\u003eWorks with PPE down pipe 117000800\u003c\/li\u003e\n\u003cli\u003eDirect-fit replacement gasket design\u003c\/li\u003e\n\u003cli\u003eBuilt for long-lasting durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSeal In Performance And Keep Exhaust Flow Right Where It Belongs\u003c\/h4\u003e\n\u003cp\u003eWhen you are working on your Duramax, even the smallest sealing components can make a big difference, and this PPE upper down pipe flange gasket is a perfect example. Built for 2017-2026 Silverado and Sierra 2500HD and 3500HD trucks, it helps ensure your exhaust system stays sealed tight under real world driving conditions. A proper seal at the flange keeps exhaust flow consistent, which is especially important when your truck is under load or running higher boost levels. Additionally, this gasket helps prevent annoying exhaust leaks that can lead to noise, reduced efficiency, or even long term wear on surrounding components. Whether you are replacing a worn gasket or installing a new down pipe, this is one of those parts you do not want to overlook. It fits both OEM and PPE down pipes, so you have flexibility depending on your setup. If you are already in there working on your exhaust, this is a simple upgrade that helps everything perform the way it should.\u003c\/p\u003e\n\u003ch4\u003eEngineered Stainless Steel Construction For High Heat Duramax Applications\u003c\/h4\u003e\n\u003cp\u003eThis PPE 117000363 gasket is constructed from 301 stainless steel, giving it the strength and heat resistance needed for demanding diesel exhaust environments. It is specifically designed for the upper down pipe flange connection on 6.6L Duramax engines, where temperatures and pressure can quickly break down lower quality materials. Additionally, stainless steel construction helps maintain a consistent seal over time, even through repeated heat cycles and heavy use. The gasket is precision cut for proper fitment, ensuring it aligns correctly with both factory and PPE down pipes, including PPE part number 117000800. This tight fit helps prevent leaks while maintaining proper exhaust flow and system efficiency. What’s more, using the correct gasket during installation helps protect surrounding components from excess heat and escaping gases. For anyone maintaining or upgrading their exhaust system, this gasket delivers the durability and reliability your setup demands.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e Fitment: \u003c\/strong\u003e 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 GM Sierra\/Silverado 2500HD\/3500HD 6.6L Duramax\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits 2017-2026 GM 6.6L Duramax only\u003c\/li\u003e\n\u003cli\u003eDesigned for 2500HD and 3500HD models\u003c\/li\u003e\n\u003cli\u003eUsed at upper down pipe flange\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM down pipe systems\u003c\/li\u003e\n\u003cli\u003eCompatible with PPE down pipe 117000800\u003c\/li\u003e\n\u003cli\u003eConstructed from 301 stainless steel\u003c\/li\u003e\n\u003cli\u003eDesigned for high heat exhaust environments\u003c\/li\u003e\n\u003cli\u003eEnsure proper sealing during installation\u003c\/li\u003e\n\u003cli\u003eRecommended replacement during exhaust service\u003c\/li\u003e\n\u003cli\u003eVerify fitment before installation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PPE","offers":[{"title":"Default Title","offer_id":53993025011996,"sku":"PPE117000363","price":17.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/files\/17000363_Gasket_for_Upper_Down_Pipe_Flange.webp?v=1774029844","url":"https:\/\/www.alligatorperformance.com\/products\/ppe-117000363-upper-down-pipe-flange-gasket","provider":"Alligator Performance","version":"1.0","type":"link"}