{"title":"Throttle Bodies","description":"\u003cp\u003eShop Subaru throttle bodies at IAG Performance, an important component for engine builders looking to improve airflow and throttle response. Upgraded throttle bodies pair well with intake and intake manifold upgrades for maximum effect, and options from Cosworth and Bosch are commonly used on built STI engines chasing increased airflow\u003c\/p\u003e","products":[{"product_id":"iag-big-bore-76mm-throttle-body-adapter-for-oe-sti-cosworth-intake-manifold","title":"IAG Big Bore 76mm Throttle Body Adapter for OEM STI, Cosworth \u0026 AMS Intake Manifolds","description":"\u003cp\u003eIn the hunt for more horsepower Subaru owners can be limited by their OEM throttle body. The OEM units just aren't big enough to meet the demands of larger upgraded turbochargers. For years those who were seeking to upgrade this component were forced to use inferior aftermarket alternatives. These aftermarket throttle bodies were prone to issues like sticking, poor idle quality, and difficult installation. IAG is pleased to announce that these owners are no longer forced to compromise drivability for horsepower. With the introduction of our new adapter plates owners are able to upgrade their OEM throttle bodies with a larger OEM quality unit that is sold separately.\u003cbr\u003e\u003cbr\u003eThe Big Bore throttle body offers a 76mm bore which is nearly 25% larger over stock. Best of all, the installation is much easier than other options previously available. Simply drill out the rivets holding the motor to your OEM Subaru throttle body, remove the motor assembly, and install it to the throttle body using the supplied replacement rivets. No complicated disassembly, no springs, and the OEM connector is plug and play. \u003cbr\u003e\u003cbr\u003eThe IAG adapter plate is designed specifically to work with the OEM STI, Cosworth or AMS Intake Manifold. The plates are machined from 6061 aluminum, and feature an O-ring sealing surface. Each adapter plate includes all the necessary hardware to complete the installation. The adapter plates are available in anodized black or natural silver finish. \u003c\/p\u003e\n\u003cp\u003eFits *2004-21 Subaru STI, 2006-07 WRX, and the 2004-08 Forester XT. The 2004-2005 STI requires a riveted throttle body. Confirm that a riveted throttle body style is being used and consult with your tuner before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eFitment Notes: \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIntended for vehicles making 600+ HP with front mount intercoolers\u003c\/li\u003e\n\u003cli\u003eECU calibration is required - Consult with your Tuner before ordering.\u003c\/li\u003e\n\u003cli\u003eBig Bore Throttle Body is not included with the kit.\u003c\/li\u003e\n\u003cli\u003eInstallation requires a Subaru throttle body with rivets attaching the motor. Not compatible with clip style Subaru throttle body.\u003c\/li\u003e\n\u003cli\u003eCustom piping \/ fabrication may be required for installation\u003c\/li\u003e\n\u003cli\u003eNot compatible with OEM style MAP sensors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003eAdapter Kit Includes: \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(x1) IAG Aluminum Adapter Plate\u003c\/li\u003e\n\u003cli\u003e(x4) M6x50mm Low Profile Socket Head Cap Screws\u003c\/li\u003e\n\u003cli\u003e(x4) M6x20mm Low Profile Socket Head Cap Screws\u003c\/li\u003e\n\u003cli\u003e(x4) Small O-rings\u003c\/li\u003e\n\u003cli\u003e(x2) Large Adapter Plate O-rings\u003c\/li\u003e\n\u003cli\u003e(x7) Rivets\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IAG Performance","offers":[{"title":"Black PN# IAG-AFD-2020BK","offer_id":48058909491418,"sku":"IAG-AFD-2020BK","price":119.99,"currency_code":"USD","in_stock":true},{"title":"Silver PN# IAG-AFD-2020SL","offer_id":48058909524186,"sku":"IAG-AFD-2020SL","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/apizgva28__05344.1699369296.1280.1280.jpg?v=1781529706"},{"product_id":"iag-big-bore-76mm-throttle-body-adapter-for-process-west-intake-manifold","title":"IAG Big Bore 76mm Throttle Body Adapter for Subaru STI Process West \u0026 Corsa Veloce Intake Manifolds","description":"\u003cp\u003eIn the hunt for more than 600 horsepower Subaru owners can be limited by their OEM throttle body. The OEM units just aren't big enough to meet the demands of larger upgraded turbochargers. For years those who were seeking to upgrade this component were forced to use inferior aftermarket alternatives. These aftermarket throttle bodies were prone to issues like sticking, poor idle quality, and difficult installation. IAG is pleased to announce that these owners are no longer forced to compromise drivability for horsepower. With the introduction of our new adapter plates owners are able to upgrade their OEM throttle bodies with a larger OEM quality unit that is sold separately.\u003cbr\u003e\u003cbr\u003eThe Big Bore throttle body offers a 76mm bore which is nearly 25% larger over stock. Best of all, the installation is much easier than other options previously available. Simply drill out the rivets holding the motor to your OEM throttle body, remove the motor assembly, and install it to the Big Bore throttle body using the supplied rivets. No complicated disassembly, no springs, and the OEM connector is plug and play. \u003cbr\u003e\u003cbr\u003eThe plates are machined from 6061 aluminum, and feature an O-ring sealing surface. Each adapter plate includes all the necessary hardware to complete the installation. The adapter plates are available in anodized black or natural silver finish.  \u003c\/p\u003e\n\u003cp\u003eFits *2004-21 Subaru STI, 2006-07 WRX, and the 2004-08 Forester XT. The 2004-2005 STI requires a riveted throttle body. Confirm that a riveted throttle body style is being used and consult with your tuner before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eFitment Notes: \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIntended for vehicles making 600+ HP with front mount intercoolers\u003c\/li\u003e\n\u003cli\u003eECU calibration is required - Consult with your tuner before ordering.\u003c\/li\u003e\n\u003cli\u003eBig Bore 76mm Throttle Body is not included with the kit.\u003c\/li\u003e\n\u003cli\u003eInstallation requires a Subaru throttle body with rivets attaching the motor. Not compatible with clip style Subaru throttle body.\u003c\/li\u003e\n\u003cli\u003eCustom piping \/ fabrication may be required for installation\u003c\/li\u003e\n\u003cli\u003eNot compatible with OEM style MAP sensors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003eAdapter Kit Includes: \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(x1) IAG Aluminum Adapter Plate\u003c\/li\u003e\n\u003cli\u003e(x4) M6x50mm Low Profile Socket Head Cap Screws\u003c\/li\u003e\n\u003cli\u003e(x4) M6x20mm Low Profile Socket Head Cap Screws\u003c\/li\u003e\n\u003cli\u003e(x4) Small O-rings\u003c\/li\u003e\n\u003cli\u003e(x2) Large Adapter Plate O-Rings\u003c\/li\u003e\n\u003cli\u003e(x7) Rivets\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IAG Performance","offers":[{"title":"Black PN# IAG-AFD-2021BK","offer_id":48058909851866,"sku":"IAG-AFD-2021BK","price":119.99,"currency_code":"USD","in_stock":true},{"title":"Silver PN# IAG-AFD-2021SL","offer_id":48058909884634,"sku":"IAG-AFD-2021SL","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/apikxu74w__57573.1633558888.1280.1280.jpg?v=1781529708"},{"product_id":"iag-bosch-throttle-body-adapter-package-for-subaru-sti-process-west-intake-manifolds","title":"IAG Bosch 82mm Throttle Body \u0026 Adapter Package for Subaru STI Process West Intake Manifolds","description":"\u003cp\u003eIn the hunt for more than 600 horsepower Subaru owners can be limited by their OEM throttle body. The OEM units just aren't big enough to meet the demands of larger upgraded turbochargers. For years those who were seeking to upgrade this component were forced to use inferior aftermarket alternatives. These aftermarket throttle bodies were prone to issues like sticking, poor idle quality, and difficult installation. IAG is pleased to announce that these owners are no longer forced to compromise drivability for horsepower. With the introduction of our new adapter plates owners are able to upgrade their OEM throttle bodies with a larger quality unit.\u003c\/p\u003e\n\u003cp\u003eThe Bosch throttle body offers a 82mm bore which is over 36% larger over stock. Intended for race applications, this unit requires the use of Stand-alone Engine Management (Motec, Haltech etc). The package includes a wire harness adapter to make the installation much easier than other options previously available. Custom calibration using your stand-alone engine management is required.\u003c\/p\u003e\n\u003cp\u003eThe plate is machined from 6061 aluminum, and features an O-ring sealing surface. Each package includes a brand new Bosch 82mm Throttle Body, IAG adapter plate, and all the necessary hardware to complete the installation. The adapter plates are available in anodized black or natural silver finish.\u003c\/p\u003e\n\u003cp\u003eFits *2004-21 Subaru STI, 2006-07 WRX, and the 2004-08 Forester XT.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eFitment Notes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIntended for vehicles making 600+ HP with front mount intercoolers \u0026amp; Process West or Corsa Veloce Intake Manifolds.\u003c\/li\u003e\n\u003cli\u003eStand-alone Engine Management is required - Consult with your Tuner before ordering.\u003c\/li\u003e\n\u003cli\u003eCustom piping \/ fabrication may be required for installation\u003c\/li\u003e\n\u003cli\u003eNot compatible with OEM style MAP sensors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePackage Includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e(x1) Bosch 82mm Throttle Body (Silver Finish Only)\u003c\/li\u003e\n\u003cli\u003e(x1) IAG Aluminum Adapter Plate (Available in Black or Silver Finish)\u003c\/li\u003e\n\u003cli\u003e(x4) M6x45mm Low Profile Socket Head Cap Screws\u003c\/li\u003e\n\u003cli\u003e(x4) M6x20mm Low Profile Socket Head Cap Screws\u003c\/li\u003e\n\u003cli\u003e(x4) M6 Flat Washers\u003c\/li\u003e\n\u003cli\u003e(x4) Small O-rings\u003c\/li\u003e\n\u003cli\u003e(x2) Large Adapter Plate O-Rings\u003c\/li\u003e\n\u003cli\u003e(x1) Wire Harness for Bosch Throttle Body Assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWarranty:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e*No Returns on electronics including Bosch Throttle Body.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IAG Performance","offers":[{"title":"Black Adapter Plate PN# IAG-AFD-2025BK","offer_id":48059084570842,"sku":"IAG-AFD-2025BK","price":459.99,"currency_code":"USD","in_stock":true},{"title":"Silver Adapter Plate PN# IAG-AFD-2025SL","offer_id":48059084603610,"sku":"IAG-AFD-2025SL","price":459.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/IAG-AFD-2025SL-01__98048.1642533544.1280.1280.jpg?v=1781530120"},{"product_id":"iag-big-bore-76mm-throttle-body-w-electronics-adapter-for-oem-sti-cosworth-intake-manifolds","title":"IAG Big Bore 76mm Throttle Body w\/ Electronics \u0026 Adapter for OEM STI, Cosworth \u0026 AMS Intake Manifolds","description":"\u003ch2 style=\"text-align:center;\"\u003eIAG BIG BORE 76MM THROTTLE BODY W\/ ELECTRONICS \u0026amp; ADAPTER PACKAGEFOR SUBARU STI \/ COSWORTH \/ AMS INTAKE MANIFOLDS\u003c\/h2\u003e\n\u003chr style=\"border:none;border-top:1px solid #e0e0e0;margin:24px 0;\"\u003e\n\u003cimg alt=\"IAG Big Bore Throttle Body\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/Unknown-934.jpg\" style=\"display:block;margin:0 auto;\"\u003e\n\u003ch2 style=\"text-align:center;\"\u003eIMPROVE ENGINE AIRFLOW\u003c\/h2\u003e\n\u003cdiv class=\"product-text\"\u003e\u003cp\u003eIn the hunt for more than 600 horsepower Subaru owners can be limited by their OEM throttle body. The OEM units just aren't big enough to meet the demands of larger upgraded turbochargers. For years those who were seeking to upgrade this component were forced to use inferior aftermarket alternatives. These aftermarket throttle bodies were prone to issues like sticking, poor idle quality, and difficult installation. IAG is pleased to announce that these owners are no longer forced to compromise drivability for horsepower. With the introduction of our new adapter plates owners are able to upgrade their OEM throttle bodies with a larger OEM quality unit. The Big Bore throttle body offers a 76mm bore, which is nearly 25% larger than stock.\u003c\/p\u003e\u003c\/div\u003e\n\u003cimg alt=\"IAG SIlver Throttle Body Adapter Plate\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/Unknown-935.png\" style=\"display:block;margin:0 auto;\"\u003e\n\u003ch2 style=\"text-align:center;\"\u003eAVAILABLE WITH BLACK OR SILVER INTAKE MANIFOLD ADAPTERS\u003c\/h2\u003e\n\u003cimg alt=\"IAG Big Bore Throttle Body Installed on STI Intake manifold\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/Unknown-937.jpg\" style=\"display:block;margin:0 auto;\"\u003e\n\u003ch2 style=\"text-align:center;\"\u003eNOW EVEN EASIER TO INSTALL\u003c\/h2\u003e\n\u003cdiv class=\"product-text\"\u003e\u003cp\u003e Best of all, the installation is now much easier than other options previously available. Simply remove the OEM Subaru throttle body, install the supplied adapter and new 76mm Throttle body to the intake manifold. No complicated disassembly, no springs, and the OEM connector is plug and play. (MAP sensor relocation may be required)\u003c\/p\u003e\u003c\/div\u003e\n\u003cimg alt=\"IAG Throttle Body Adapter Plate\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/Unknown-938.jpg\" style=\"display:block;margin:0 auto;\"\u003e\n\u003ch2 style=\"text-align:center;\"\u003eCNC MACHINED ADAPTER PLATES\u003c\/h2\u003e\n\u003cdiv class=\"product-text\"\u003e\u003cp\u003eThe IAG adapter plate is designed specifically to work with the OEM STI, Cosworth or AMS Intake Manifold. The plates are machined from 6061 aluminum, and feature an O-ring sealing surface. Each package includes a brand new Big Bore 76mm Throttle Body, IAG adapter plate, and all the necessary hardware to complete the installation. The adapter plates are available in anodized black or natural silver finish. \u003c\/p\u003e\u003c\/div\u003e\n\u003cimg alt=\"CNC Machining in the USA\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/Unknown-939.jpg\" style=\"display:block;margin:0 auto;\"\u003e\n\u003ch2 style=\"text-align:center;\"\u003eMADE IN THE USA\u003c\/h2\u003e\n\u003cdiv class=\"product-text\"\u003e\u003cp\u003eWe're proud to say that our products are manufactured right here in our facility in Westminster, MD. IAG Performance was founded in 2007 as an innovator in Subaru performance products. We offer a wide variety of problem-solving aftermarket products. Our friendly, USA based, support staff is also here to help with any installation questions you might have.\u003c\/p\u003e\u003c\/div\u003e","brand":"IAG Performance","offers":[{"title":"Black Adapter PN# IAG-AFD-2027BK","offer_id":48059136835802,"sku":"IAG-AFD-2027BK","price":414.99,"currency_code":"USD","in_stock":true},{"title":"Silver Adapter PN# IAG-AFD-2027SL","offer_id":48059136868570,"sku":"IAG-AFD-2027SL","price":414.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/IAG-AFD-2027-OPT-01__66251.1699369083.1280.1280.jpg?v=1781530273"},{"product_id":"iag-big-bore-76mm-throttle-body-w-electronics-adapter-package-for-subaru-sti-process-west-intake-manifolds","title":"IAG Big Bore 76mm Throttle Body w\/ Electronics \u0026 Adapter Package for Subaru STI Process West Intake Manifolds","description":"\u003ch2 style=\"text-align:center;\"\u003eIAG BIG BORE 76MM THROTTLE BODY W\/ ELECTRONICS \u0026amp; ADAPTER PACKAGEFOR SUBARU STI PROCESS WEST INTAKE MANIFOLDS\u003c\/h2\u003e\n\u003chr style=\"border:none;border-top:1px solid #e0e0e0;margin:24px 0;\"\u003e\n\u003cimg alt=\"IAG Big Bore Throttle Body\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/Unknown-934.jpg\" style=\"display:block;margin:0 auto;\"\u003e\n\u003ch2 style=\"text-align:center;\"\u003eIMPROVE ENGINE AIRFLOW\u003c\/h2\u003e\n\u003cdiv class=\"product-text\"\u003e\u003cp\u003eIn the hunt for more than 600 horsepower Subaru owners can be limited by their OEM throttle body. The OEM units just aren't big enough to meet the demands of larger upgraded turbochargers. For years those who were seeking to upgrade this component were forced to use inferior aftermarket alternatives. These aftermarket throttle bodies were prone to issues like sticking, poor idle quality, and difficult installation. IAG is pleased to announce that these owners are no longer forced to compromise drivability for horsepower. With the introduction of our new adapter plates owners are able to upgrade their OEM throttle bodies with a larger OEM quality unit. The Big Bore throttle body offers a 76mm bore, which is nearly 25% larger than stock.\u003c\/p\u003e\u003c\/div\u003e\n\u003cimg alt=\"IAG SIlver Throttle Body Adapter Plate\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/Unknown-935.png\" style=\"display:block;margin:0 auto;\"\u003e\n\u003ch2 style=\"text-align:center;\"\u003eAVAILABLE WITH BLACK OR SILVER INTAKE MANIFOLD ADAPTERS\u003c\/h2\u003e\n\u003cimg alt=\"IAG Throttle Body Adapter Plate Installed on Process West Intake Manifold\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/Unknown-940.jpg\" style=\"display:block;margin:0 auto;\"\u003e\n\u003ch2 style=\"text-align:center;\"\u003eNOW EVEN EASIER TO INSTALL\u003c\/h2\u003e\n\u003cdiv class=\"product-text\"\u003e\u003cp\u003eBest of all, the installation is now much easier than other options previously available. Simply remove the OEM Subaru throttle body, install the supplied adapter and new 76mm Throttle body to the intake manifold. No complicated disassembly, no springs, and the OEM connector is plug and play. (MAP sensor relocation may be required)\u003c\/p\u003e\u003c\/div\u003e\n\u003cimg alt=\"IAG Throttle Body Adapter Plate\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/Unknown-938.jpg\" style=\"display:block;margin:0 auto;\"\u003e\n\u003ch2 style=\"text-align:center;\"\u003eCNC MACHINED ADAPTER PLATES\u003c\/h2\u003e\n\u003cdiv class=\"product-text\"\u003e\u003cp\u003eThe plates are machined from 6061 aluminum, and feature an O-ring sealing surface. Each package includes a brand new Big Bore 76mm Throttle Body, IAG adapter plate, and all the necessary hardware to complete the installation. The adapter plates are available in anodized black or natural silver finish.  \u003c\/p\u003e\u003c\/div\u003e\n\u003cimg alt=\"CNC Machining in the USA\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/Unknown-939.jpg\" style=\"display:block;margin:0 auto;\"\u003e\n\u003ch2 style=\"text-align:center;\"\u003eMADE IN THE USA\u003c\/h2\u003e\n\u003cdiv class=\"product-text\"\u003e\u003cp\u003eWe're proud to say that our products are manufactured right here in our facility in Westminster, MD. IAG Performance was founded in 2007 as an innovator in Subaru performance products. We offer a wide variety of problem-solving aftermarket products. Our friendly, USA based, support staff is also here to help with any installation questions you might have.\u003c\/p\u003e\u003c\/div\u003e","brand":"IAG Performance","offers":[{"title":"Black Adapter Plate PN# IAG-AFD-2028BK","offer_id":48059137032410,"sku":"IAG-AFD-2028BK","price":414.99,"currency_code":"USD","in_stock":true},{"title":"Silver Adapter Plate PN# IAG-AFD-2028SL","offer_id":48059137065178,"sku":"IAG-AFD-2028SL","price":414.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0828\/8623\/0234\/files\/IAG-AFD-2028SL-01__82960.1662583266.1280.1280.jpg?v=1781530272"}],"url":"https:\/\/www.iagperformance.com\/collections\/iag-parts-engine-air-induction-throttle-bodies.oembed","provider":"IAG Performance","version":"1.0","type":"link"}