{"product_id":"twin-turbocharger-r2s-for-international-4300-4400-7300-7400-2010-2017-7-6l","title":"Twin Turbocharger R2S for International 4300 4400 7300 7400 (2010-2017) 7.6L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Replacement R2S Twin Turbocharger Assembly for 2010-2017 International 4300, 4400, 7300, 7400 (DuraStar \/ WorkStar)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The R2S twin turbocharger assembly replaces the complete dual-stage forced induction system on 2010-2017 International medium-duty trucks to restore factory manifold boost pressure, resolve soot-induced actuator binding, and eliminate power loss under heavy payload conditions.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock International 4300, 4400, 7300, 7400 Turbocharger Failure Modes\u003c\/h3\u003e\n\u003cp\u003eThe EPA10 \u003cstrong\u003eMaxxForce DT (I334)\u003c\/strong\u003e 7.6L inline-six relies on a regulated two-stage (R2S) system subjected to extreme exhaust gas recirculation (EGR) heat and heavy cycling. The factory high-pressure (HP) and low-pressure (LP) layout commonly experiences severe carbon fouling across the interstage bypass valve, causing the internal wastegate and flapper assembly to stick. Concurrently, excessive heat soak degrades the journal and thrust bearings inside the center housing rotating assemblies (CHRA), causing axial shaft play, oil seal deterioration, blow-by through the intercooler piping, and diagnostic fault codes such as low boost or EGR delta-P errors.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement assembly delivers a factory-calibrated, complete two-stage drop-in solution. Manufactured with high-nickel ductile iron turbine housings to withstand sustained EGTs without micro-fracturing, each CHRA is dynamic VSR balanced to prevent high-RPM harmonic vibration. The internal bypass actuator and ducting arrive pre-indexed and synchronized, restoring instantaneous spool response from the high-pressure unit while ensuring full exhaust gas flow to the low-pressure turbine during sustained heavy-duty highway pulling.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x Complete R2S Two-Stage Twin Turbocharger Assembly (High-Pressure Turbo, Low-Pressure Turbo, Interstage Connection Duct, and Pre-Installed Bypass Actuator)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100% style=\" border-collapse: collapse border: solid font-size: min-width:\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2010-2017 International 4300, 4400, 7300, 7400\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003eMaxxForce DT 7.6L (I334)\u003c\/strong\u003e \/ \u003cstrong\u003eDuraStar \u0026amp; WorkStar\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e215-300 hp \/ 560-860 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003e1899898C91\u003c\/strong\u003e, \u003cstrong\u003e1899898C92\u003c\/strong\u003e, \u003cstrong\u003e7081879C91\u003c\/strong\u003e, \u003cstrong\u003e1891335C91\u003c\/strong\u003e, \u003cstrong\u003e179360\u003c\/strong\u003e, \u003cstrong\u003e179322\u003c\/strong\u003e, 1882868C91, 1889486C92, 1891557C93, 5010930C91, 5010930R91, 5010934R9, 11559900047, 14031480-101\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2010-2017 International 4300 (MaxxForce DT 7.6L Diesel)\u003c\/li\u003e\n  \u003cli\u003e2010-2017 International 4400 (MaxxForce DT 7.6L Diesel)\u003c\/li\u003e\n  \u003cli\u003e2010-2017 International 7300 (MaxxForce DT 7.6L Diesel)\u003c\/li\u003e\n  \u003cli\u003e2010-2017 International 7400 (MaxxForce DT 7.6L Diesel)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the DuraStar \/ WorkStar 4300, 4400, 7300, 7400?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for 2010-2017 models equipped with the EPA10 \u003cstrong\u003eMaxxForce DT 7.6L (I334)\u003c\/strong\u003e engine. It does not fit pre-2010 EPA07 single-turbo setups or MaxxForce 9\/10 engines with differing turbine housing flanges.\u003c\/p\u003e\n\n\u003ch4\u003eWhat pre-installation steps are mandatory before initial startup?\u003c\/h4\u003e\n\u003cp\u003eYou must change engine oil and filters, flush or replace oil feed and drain lines, inspect the charge air cooler for trapped oil debris, and manually prime both turbo center housings with clean oil prior to cranking.\u003c\/p\u003e\n\n\u003ch3\u003eThe International Commercial Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt for rigorous commercial cycles, severe duty towing, and high-hour municipal use, this complete turbocharger assembly maintains consistent thermal stability and boost performance without core return requirements.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67610988282104,"sku":"DS-EYS91JMD1","price":1089.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/twin-turbocharger-r2s-for-international-4300-4400-7300-7400-2010-2017-7-6l-1.jpg?v=1791568227","url":"https:\/\/performancechiptuning.com\/products\/twin-turbocharger-r2s-for-international-4300-4400-7300-7400-2010-2017-7-6l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}