{"title":"Blow-Off Valves Parts","description":"\u003cp\u003eEngine › Blow-Off Valves - TGK Motorsport\u003c\/p\u003e","products":[{"product_id":"tgk-motorsport-audi-4-0t-blow-off-valve-conversion-kit","title":"TGK Motorsport Audi 4.0T Blow-Off Valve Conversion 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\u003cp class=\"tgk-p\"\u003eTired of dealing with boost leaks caused by factory or aftermarket electronic diverter valves? The TGK Motorsport BOV Conversion Kit is the solution you've been looking for. By switching from electronic diverter valves to a mechanical blow-off valve (BOV), you can eliminate the common issues associated with electronic valves.\u003c\/p\u003e\n\u003cp class=\"tgk-p\"\u003eOur BOV kit uses the factory vacuum and boost reference port to ensure the valve stays fully closed during boost, eliminating any potential for leaks. With no leaks, your engine can perform at its best, and your turbos will run more efficiently. Not only does this upgrade enhance performance, but it also removes the recirculation noise from the diverter valves, allowing you to enjoy the signature sound of a blow-off valve.\u003c\/p\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\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eAudi 4.0T Engine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValve Type\u003c\/td\u003e\n\u003ctd\u003eMechanical Blow-Off Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference System\u003c\/td\u003e\n\u003ctd\u003eFactory Vacuum\/Boost Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003ePlug \u0026amp; Play\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware Included\u003c\/td\u003e\n\u003ctd\u003eComplete Kit\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\u003eEliminates Boost Leaks\u003c\/b\u003eMechanical design prevents common electronic valve failure modes.\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\u003eFactory Reference Integration\u003c\/b\u003eUses OEM vacuum and boost ports for reliable operation.\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\u003eEnhanced Turbo Efficiency\u003c\/b\u003eLeak-free operation allows turbos to run at optimal 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\u003eClassic BOV Sound\u003c\/b\u003eRemoves recirculation noise for authentic blow-off valve acoustics.\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\u003eComplete Conversion Kit\u003c\/b\u003eIncludes all necessary components and delete emulators.\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\u003eError-Free Installation\u003c\/b\u003eDiverter valve emulators prevent CEL codes and ensure clean setup.\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\"\u003eWill this kit throw any error codes?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eNo, the included diverter valve delete emulators ensure a clean, error-free installation without CEL codes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eHow does this improve performance over stock diverter valves?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eThe mechanical BOV eliminates boost leaks common with electronic valves, allowing your turbos to run more efficiently and your engine to perform at its best.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eWhat's included in the conversion kit?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eThe kit includes TGK Motorsport conversion elbow, Turbosmart GenV Raceport BOV, all necessary hoses, and diverter valve delete emulators.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eIs installation difficult?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eNo, the kit is designed for an effortless installation process using factory vacuum and boost reference ports.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eWill I hear the blow-off valve sound?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eYes, this upgrade removes the recirculation noise from diverter valves, allowing you to enjoy the signature BOV sound.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TGK Motorsport","offers":[{"title":"Default Title","offer_id":45392240476309,"sku":"TGK-0302-01","price":699.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0579\/6259\/4453\/files\/Main_a1b3feeb-2e82-4439-9fbd-942b1efaf299.jpg?v=1745710093"},{"product_id":"tgk-motorsport-audi-4-0t-bov-spacer-kit","title":"TGK Motorsport Audi 4.0T BOV Spacer 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\u003cp class=\"tgk-p\"\u003eThe Audi 4.0T TFSI — found in the S6, S7, S8, A8, RS6, RS7, and related VW Group platforms — is one of the most pressure-intensive twin-turbocharged engines in production. When enthusiasts upgrade to a Wagner Tuning charge cooler for improved intercooling efficiency, they immediately run into a frustrating dimensional mismatch: the stock blow-off valve port geometry does not align with the Wagner unit's charge pipe outlet, making it impossible to run an upgraded BOV without a precision adapter solution. Band-aided fixes using off-the-shelf hardware introduce boost leaks, charge pressure drop, and potential compressor surge — all of which kill consistency on high-horsepower 4.0T builds.\u003c\/p\u003e\n\u003cp class=\"tgk-p\"\u003eThe TGK Motorsport Audi 4.0T BOV Spacer Kit eliminates that mismatch entirely. Machined from aerospace-grade 6061 billet aluminum, these precision spacers bridge the TGK BOV directly to the Wagner Tuning charge cooler with zero compromise in sealing integrity. Each kit ships complete with a purpose-cut gasket and all required hardware, so installation is clean, permanent, and boost-proof — no improvised adapters, no leaks, no excuses.\u003c\/p\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\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003eTGK-0302-02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible vehicles\u003c\/td\u003e\n\u003ctd\u003eAudi S6, S7, S8, A8, RS6, RS7, RS6 Avant, A6, A7 \u0026amp; related VW Group platforms equipped with the 4.0T TFSI (CEU, CES, CVU, CVK, CTGE engines) paired with Wagner Tuning charge cooler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e6061 Billet Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardware included\u003c\/td\u003e\n\u003ctd\u003eYes — spacers, gasket \u0026amp; mounting hardware\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eLifetime structural warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\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\u003ePrecision Billet Machining\u003c\/b\u003eCNC-machined from 6061 billet aluminum to exact tolerances, ensuring a flush, rattle-free fit between the TGK BOV and Wagner Tuning charge cooler on every Audi 4.0T application.\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\u003eLeak-Free Sealing\u003c\/b\u003ePurpose-cut gasket included in the kit creates a dead-seal interface at boost, eliminating charge pressure loss and compressor surge events that plague generic adapter solutions.\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\u003eComplete Hardware Kit\u003c\/b\u003eEvery bolt, spacer, and gasket needed for a full installation ships in the box — no hardware store runs, no sourcing headaches, no missing pieces.\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\u003eWagner Cooler Compatible\u003c\/b\u003eEngineered specifically around the Wagner Tuning charge cooler outlet geometry for Audi S6, S7, S8, RS6, and RS7 platforms — no modifications to the cooler or charge pipes required.\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\u003eCorrosion-Resistant Finish\u003c\/b\u003e6061 aluminum naturally resists heat cycling, oil contamination, and under-hood corrosion, keeping the spacer structurally sound across the life of the build.\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\u003eLifetime Structural Warranty\u003c\/b\u003eTGK backs this kit with a lifetime structural warranty — because a machined billet adapter should never be a point of failure on a high-horsepower 4.0T build.\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\"\u003eWhich Wagner Tuning charge cooler is this BOV spacer kit designed for?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eThis kit is engineered specifically to work with the Wagner Tuning competition charge cooler designed for Audi 4.0T TFSI platforms including the S6, S7, S8, RS6, RS7, and A8. If you are running a different intercooler brand or a stock cooler, fitment cannot be guaranteed — contact TGK Motorsport before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eDo I need to modify the Wagner charge cooler or charge pipes to install this kit?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eNo. The TGK 4.0T BOV Spacer Kit is designed as a bolt-on solution. The billet spacers and included gasket bridge the gap between the TGK BOV and the Wagner cooler outlet without requiring any drilling, cutting, or modification to your existing intercooler or charge pipe routing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eIs all mounting hardware included in the kit?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eYes. Each TGK BOV Spacer Kit ships complete with the billet 6061 aluminum spacers, a purpose-cut sealing gasket, and all mounting hardware required for installation. Everything you need to complete the job is in the box.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eWill this spacer kit work with other BOV brands, or only the TGK BOV?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eThis kit is dimensionally matched to the TGK Motorsport blow-off valve and the Wagner Tuning charge cooler. It is not intended for use with third-party BOVs such as Turbosmart, HKS, or Forge units, as bolt patterns and port diameters will differ. For the best results, pair this spacer kit with the TGK Motorsport Audi 4.0T BOV.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-item\"\u003e\n\u003cdiv class=\"tgk-faq-q\"\u003eWhat warranty does the TGK Motorsport BOV Spacer Kit carry?\u003c\/div\u003e\n\u003cdiv class=\"tgk-faq-a\"\u003eThe TGK Motorsport Audi 4.0T BOV Spacer Kit is backed by a lifetime structural warranty. TGK stands behind the integrity of every billet component we manufacture. If a spacer fails due to a material or machining defect at any point, we will make it right.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"TGK Motorsport","offers":[{"title":"Default Title","offer_id":67619334160533,"sku":"TGK-0302-02","price":0.0,"currency_code":"USD","in_stock":false}]}],"url":"https:\/\/tgkmotorsport.com\/collections\/cat-engine-blow-off-valves-parts.oembed","provider":"TGK Motorsport","version":"1.0","type":"link"}