{"product_id":"tgk-motorsport-audi-4-0t-ultimate-billet-coolant-kit","title":"TGK Motorsport Audi 4.0T Ultimate Billet Coolant Kit","description":"\u003cdiv class=\"tgk\"\u003e\n\u003cdiv class=\"tgk-section\"\u003e\n\u003cdiv class=\"tgk-sh\"\u003e\n\u003cdiv class=\"tgk-ic\"\u003e\u003csvg viewbox=\"0 0 24 24\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M7 2h2v2h6V2h2v2h1a2 2 0 012 2v1h-2v1h2v4h-2v1h2v1a2 2 0 01-2 2h-1v2h-6v2H9v-2H7v2H5v-2H4a2 2 0 01-2-2v-1h2v-1H2V9h2V8H2V7a2 2 0 012-2h1V3h2V2zm1 4a1 1 0 00-1 1v8a1 1 0 001 1h8a1 1 0 001-1V7a1 1 0 00-1-1H8zm2 2h4v6h-4V8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"tgk-sh-title\"\u003eOverview\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-p\"\u003eAddress all three of the front coolant components in the Audi 4.0T cooling system with the TGK Motorsport Ultimate Coolant Reliability Bundle — featuring our Billet Front Thermostat Piping Kit, Coolant Shutoff Valve Delete Kit, and Billet Coolant Flange. This comprehensive upgrade replaces all factory plastic fittings with 6061-T6 billet aluminum components and introduces critical sealing improvements to eliminate coolant leaks and overheating risks once and for all.\u003c\/div\u003e\n\u003cdiv class=\"tgk-p\"\u003eThe Audi 4.0T engine's cooling system is plagued by multiple weak points that commonly result in hard-to-diagnose coolant leaks, vacuum-related failures, and even engine-threatening overheating. Each of these components is vulnerable due to the OEM use of plastic housings and minimal sealing — and all three are known to fail, often at the worst time. This all-in-one kit provides a permanent solution by replacing the front thermostat elbow, coolant shutoff valve, and main coolant flange with precision-machined billet aluminum parts designed for performance, reliability, and peace of mind.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-section\"\u003e\n\u003cdiv class=\"tgk-sh\"\u003e\n\u003cdiv class=\"tgk-ic\"\u003e\u003csvg viewbox=\"0 0 24 24\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M3 3h18v2H3V3zm0 4h12v2H3V7zm0 4h18v2H3v-2zm0 4h12v2H3v-2zm0 4h18v2H3v-2z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"tgk-sh-title\"\u003eSpecifications\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable class=\"tgk-specs\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e6061-T6 Billet Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eCNC Machined\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit Contents\u003c\/td\u003e\n\u003ctd\u003eFront Thermostat Piping Kit, Coolant Shutoff Valve Delete Kit, Billet Coolant Flange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSealing System\u003c\/td\u003e\n\u003ctd\u003eDual-Gasket Design (Thermostat Piping)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eDirect OEM Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003ePDF Instructions Included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-section\"\u003e\n\u003cdiv class=\"tgk-sh\"\u003e\n\u003cdiv class=\"tgk-ic\"\u003e\u003csvg viewbox=\"0 0 24 24\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M13 2L3 14h9l-1 8 10-12h-9l1-8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"tgk-sh-title\"\u003eFeatures \u0026amp; Benefits\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-feats\"\u003e\n\u003cdiv class=\"tgk-feat\"\u003e\n\u003cdiv class=\"tgk-feat-chk\"\u003e✓\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat-txt\"\u003e\n\u003cb\u003eComplete Front Coolant System Upgrade\u003c\/b\u003eAddresses all three known failure points in one comprehensive kit for total peace of mind.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat\"\u003e\n\u003cdiv class=\"tgk-feat-chk\"\u003e✓\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat-txt\"\u003e\n\u003cb\u003eDual-Gasket Sealing System\u003c\/b\u003eEnhanced redundancy and leak prevention on the thermostat piping for superior reliability.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat\"\u003e\n\u003cdiv class=\"tgk-feat-chk\"\u003e✓\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat-txt\"\u003e\n\u003cb\u003eDangerous Shutoff Valve Elimination\u003c\/b\u003eRemoves the vacuum-actuated valve that commonly fails closed, preventing overheating risks.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat\"\u003e\n\u003cdiv class=\"tgk-feat-chk\"\u003e✓\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat-txt\"\u003e\n\u003cb\u003e6061-T6 Billet Construction\u003c\/b\u003ePrecision-machined aluminum components replace weak plastic fittings for motorsport-grade durability.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat\"\u003e\n\u003cdiv class=\"tgk-feat-chk\"\u003e✓\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat-txt\"\u003e\n\u003cb\u003eDirect OEM+ Fitment\u003c\/b\u003eDrop-in replacement with superior materials and engineering for enhanced performance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat\"\u003e\n\u003cdiv class=\"tgk-feat-chk\"\u003e✓\u003c\/div\u003e\n\u003cdiv class=\"tgk-feat-txt\"\u003e\n\u003cb\u003eEliminates Hidden Coolant Loss\u003c\/b\u003ePrevents hard-to-diagnose leaks and system degradation from failing plastic components.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-section\"\u003e\n\u003cdiv class=\"tgk-sh\"\u003e\n\u003cdiv class=\"tgk-ic\"\u003e\u003csvg viewbox=\"0 0 24 24\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M22.7 19l-9.1-9.1c.9-2.3.4-5-1.5-6.9-2-2-5-2.4-7.4-1.3L9 6 6 9 1.6 4.7C.4 7.1.9 10.1 2.9 12.1c1.9 1.9 4.6 2.4 6.9 1.5l9.1 9.1c.4.4 1 .4 1.4 0l2.3-2.3c.5-.4.5-1.1.1-1.4z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"tgk-sh-title\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eWhy bundle all three coolant components together?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eEach component is a known failure point on the 4.0T, and they often fail silently. By upgrading all three at once, you get a complete permanent solution whether chasing down mystery leaks or proactively upgrading for reliability.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eWhat makes the shutoff valve so dangerous when it fails?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eThe vacuum-actuated shutoff valve commonly fails in the closed position, completely blocking coolant circulation and creating severe overheating risk that can damage the engine.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eHow does the dual-gasket sealing system work?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eUnlike the OEM single O-ring design, our billet thermostat piping uses two gaskets for enhanced redundancy and leak prevention, especially during cold starts and high-pressure conditions.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eWill this kit work on tuned 4.0T engines?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eYes, the billet aluminum construction and enhanced sealing make this kit ideal for tuned vehicles that put additional stress on the cooling system components.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eAre installation instructions included?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eYes, detailed PDF installation instructions are provided. Click \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0579\/6259\/4453\/files\/ENG-10_11_Install_Instructions.pdf?v=1750435790\"\u003eHERE\u003c\/a\u003e for the installation guide.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TGK Motorsport","offers":[{"title":"S6\/S7","offer_id":47340216516757,"sku":"TGK-ENG-10","price":879.99,"currency_code":"USD","in_stock":true},{"title":"RS6\/RS7\/A8\/S8","offer_id":47340216549525,"sku":"TGK-ENG-11","price":879.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0776\/6510\/8117\/files\/ENG-10Web1.jpg?v=1778267801","url":"https:\/\/autobahnsupplyco.com\/products\/tgk-motorsport-audi-4-0t-ultimate-billet-coolant-kit","provider":"Autobahn supply co","version":"1.0","type":"link"}