{"product_id":"garrett-g-series-ii-g30-725-54mm-turbocharger-1","title":"Garrett G-Series II G30-725 54mm Turbocharger","description":"\u003cp\u003e\u003cstrong\u003eGarrett G-Series II G30-725 54mm Turbocharger — Select Turbine Housing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number: 934117-5001S\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Garrett G-Series II G30-725 is a standard-rotation, dual-ceramic-ball-bearing turbocharger platform designed for high-output street, competition, and specialty-performance applications requiring substantial airflow from a compact G30 frame. Garrett rates the G30-725 for 350–725 horsepower and references engine displacements from 2.0 to 3.5 liters. Garrett horsepower ratings represent potential flywheel horsepower based on compressor-map choke flow and are not a guaranteed wheel-horsepower figure.\u003c\/p\u003e\n\u003cp\u003eThe G30-725 uses a 54mm inducer and 67mm exducer compressor wheel with a 65-trim profile and 0.70 compressor-housing A\/R. Its turbine stage uses a 60mm inducer and 55mm exducer Mar-M alloy wheel with an 84-trim profile. This larger turbine stage distinguishes the G30-725 from the smaller G25-700 while retaining the same nominal 54mm compressor inducer, providing additional exhaust-flow capacity for larger-displacement or higher-mass-flow applications. Garrett identifies a maximum allowable turbocharger speed of 160,000 rpm.\u003c\/p\u003e\n\u003cp\u003eAs part of Garrett’s G-Series II range, the G30-725 incorporates revised compressor aerodynamics that provide up to 10 percent greater compressor flow than the corresponding first-generation G-Series unit at peak pressure ratio and peak turbocharger speed. Garrett also identifies increased efficiency at high flow rates. The G-Series II supercore retains compatibility with Garrett’s first-generation G30 compressor and turbine housings, allowing an existing standard-rotation G30 installation to be upgraded without redesigning the complete turbo system when the existing housing part numbers are confirmed compatible.\u003c\/p\u003e\n\u003cp\u003eThis listing is structured as a selectable-housing product. The Garrett 934117-5001S supercore may be combined with seven verified externally wastegated turbine housings, or ordered as one of two Garrett factory-assembled and calibrated internally wastegated turbochargers. A supercore-only option is also available. The standard-rotation housing family includes open-scroll V-band and T3 inlet configurations, plus a divided T4 housing for applications designed around a true twin-scroll exhaust manifold.\u003c\/p\u003e\n\u003cp\u003eRAD recommends the Garrett 934118-5001S complete turbocharger with the 0.83 A\/R V-band inlet, V-band outlet, and internal wastegate as the general catalog default. It combines Garrett factory assembly and actuator calibration with a turbine A\/R that offers a useful response-versus-flow balance for a broad range of 2.0–3.5-liter street and track applications. Applications operating near the upper end of the G30-725 airflow range, or installations requiring greater wastegate authority, may be better served by the 1.01 A\/R internal-wastegate assembly or one of the externally wastegated configurations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGarrett G-Series II G30-725 standard-rotation turbocharger platform\u003c\/li\u003e\n\u003cli\u003eGarrett horsepower reference range: 350–725 hp\u003c\/li\u003e\n\u003cli\u003eGarrett displacement reference range: 2.0–3.5 liters\u003c\/li\u003e\n\u003cli\u003e54mm compressor inducer and 67mm compressor exducer\u003c\/li\u003e\n\u003cli\u003e60mm turbine inducer and 55mm turbine exducer\u003c\/li\u003e\n\u003cli\u003eDual ceramic ball-bearing cartridge with steel bearing cages\u003c\/li\u003e\n\u003cli\u003eG-Series II compressor aerodynamics with up to 10 percent more flow than the corresponding first-generation G-Series compressor at peak pressure ratio and peak turbo speed\u003c\/li\u003e\n\u003cli\u003eIncreased compressor efficiency at high flow rates compared with the first-generation configuration\u003c\/li\u003e\n\u003cli\u003eMaximum allowable turbocharger speed: 160,000 rpm\u003c\/li\u003e\n\u003cli\u003eOne-piece center-housing and backplate architecture\u003c\/li\u003e\n\u003cli\u003eTwin piston-ring sealing on both sides of the shaft assembly\u003c\/li\u003e\n\u003cli\u003eMar-M alloy turbine wheel rated for exhaust-gas temperatures up to 1,050°C\u003c\/li\u003e\n\u003cli\u003eStainless-steel turbine housings rated by Garrett for temperatures up to 1,050°C\u003c\/li\u003e\n\u003cli\u003eOil restrictor and water fittings included\u003c\/li\u003e\n\u003cli\u003eMachined compressor-housing port for an optional Garrett turbo-speed sensor\u003c\/li\u003e\n\u003cli\u003eSeven externally wastegated and two internally wastegated standard-rotation turbine configurations\u003c\/li\u003e\n\u003cli\u003eGarrett factory-assembled internal-wastegate turbochargers include a calibrated 0.5-bar actuator\u003c\/li\u003e\n\u003cli\u003eOpen-scroll V-band and T3 turbine-inlet options\u003c\/li\u003e\n\u003cli\u003eDivided T4 turbine-inlet option for a true twin-scroll manifold\u003c\/li\u003e\n\u003cli\u003eV-band turbine outlet on every verified standard-rotation housing\u003c\/li\u003e\n\u003cli\u003eCompatible with the verified standard-rotation Garrett G30 housing family listed below\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGarrett G-Series II G30-725 supercore, part number 934117-5001S, when an external-wastegate or supercore-only configuration is selected\u003c\/li\u003e\n\u003cli\u003eCompressor housing, compressor wheel, center housing rotating assembly, and turbine wheel\u003c\/li\u003e\n\u003cli\u003eGarrett oil restrictor\u003c\/li\u003e\n\u003cli\u003eGarrett water fittings\u003c\/li\u003e\n\u003cli\u003eSelected Garrett standard-rotation G30 turbine-housing kit when an external-wastegate housing variant is ordered\u003c\/li\u003e\n\u003cli\u003eGarrett factory-assembled and calibrated turbocharger with selected internally wastegated housing and 0.5-bar actuator when an internal-wastegate variant is ordered\u003c\/li\u003e\n\u003cli\u003eSupercore-only variant excludes the turbine housing and wastegate actuator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompressor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompressor inducer: 54mm\u003c\/li\u003e\n\u003cli\u003eCompressor exducer: 67mm\u003c\/li\u003e\n\u003cli\u003eCompressor trim: 65\u003c\/li\u003e\n\u003cli\u003eCompressor-housing A\/R: 0.70\u003c\/li\u003e\n\u003cli\u003eCompressor inlet: approximately 3.00-inch hose connection\u003c\/li\u003e\n\u003cli\u003eCompressor outlet: approximately 2.00-inch hose connection\u003c\/li\u003e\n\u003cli\u003eMaximum allowable turbocharger speed: 160,000 rpm\u003c\/li\u003e\n\u003cli\u003eOptional Garrett turbo-speed sensor kit is sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTurbine\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTurbine inducer: 60mm\u003c\/li\u003e\n\u003cli\u003eTurbine exducer: 55mm\u003c\/li\u003e\n\u003cli\u003eTurbine trim: 84\u003c\/li\u003e\n\u003cli\u003eGarrett turbo reference: 5455\u003c\/li\u003e\n\u003cli\u003eTurbine-wheel material: Mar-M high-temperature alloy\u003c\/li\u003e\n\u003cli\u003eGarrett turbine-flow comparison: 15–20 percent more flow than the referenced GTX turbine architecture\u003c\/li\u003e\n\u003cli\u003eGarrett peak turbine-efficiency reference: 74 percent\u003c\/li\u003e\n\u003cli\u003eTurbine-housing material: stainless steel\u003c\/li\u003e\n\u003cli\u003eTurbine-wheel and turbine-housing temperature rating: up to 1,050°C\u003c\/li\u003e\n\u003cli\u003eTurbine outlet: V-band on every listed standard-rotation configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCenter Housing, Bearings, Lubrication, and Coolant Connections\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBearing system: dual ceramic ball bearing with steel cages\u003c\/li\u003e\n\u003cli\u003eCenter-housing construction: one-piece center housing and backplate\u003c\/li\u003e\n\u003cli\u003eShaft sealing: twin piston rings on both compressor and turbine sides\u003c\/li\u003e\n\u003cli\u003eCooling: water cooled\u003c\/li\u003e\n\u003cli\u003eGarrett oil restrictor and water fittings are included\u003c\/li\u003e\n\u003cli\u003eOil-feed line, oil-drain hardware, coolant hoses, and engine-side connections must be selected for the application\u003c\/li\u003e\n\u003cli\u003eOil pressure, feed-line arrangement, drain sizing, and drain routing must follow Garrett’s installation requirements for the specific engine and oiling system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable Turbine Configurations\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.83 A\/R V-Band \/ V-Band, Internal Wastegate — Garrett complete turbo 934118-5001S; housing 740902-0094:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eopen-scroll V-band turbine inlet, V-band turbine outlet, internal wastegate, and Garrett-calibrated 0.5-bar actuator.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRAD recommended general catalog default.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.01 A\/R V-Band \/ V-Band, Internal Wastegate — Garrett complete turbo 934118-5002S; housing 740902-0095:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eopen-scroll V-band turbine inlet, V-band turbine outlet, internal wastegate, and Garrett-calibrated 0.5-bar actuator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.61 A\/R V-Band \/ V-Band, External Wastegate — Garrett housing 740902-0086:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eopen-scroll V-band turbine inlet, V-band turbine outlet, external wastegate required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.83 A\/R V-Band \/ V-Band, External Wastegate — Garrett housing 740902-0087:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eopen-scroll V-band turbine inlet, V-band turbine outlet, external wastegate required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.01 A\/R V-Band \/ V-Band, External Wastegate — Garrett housing 740902-0088:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eopen-scroll V-band turbine inlet, V-band turbine outlet, external wastegate required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.21 A\/R V-Band \/ V-Band, External Wastegate — Garrett housing 740902-0089:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eopen-scroll V-band turbine inlet, V-band turbine outlet, external wastegate required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.83 A\/R T3 \/ V-Band, External Wastegate — Garrett housing 740902-0090:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eopen-scroll T3 turbine inlet, V-band turbine outlet, external wastegate required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.01 A\/R T3 \/ V-Band, External Wastegate — Garrett housing 740902-0091:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eopen-scroll T3 turbine inlet, V-band turbine outlet, external wastegate required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.06 A\/R Divided T4 \/ V-Band, External Wastegate — Garrett housing 740902-0092:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edivided T4 turbine inlet, V-band turbine outlet, external wastegate required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupercore Only — Garrett 934117-5001S:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecompressor housing and complete center rotating assembly supplied without a turbine housing or wastegate actuator.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThis is a universal performance turbocharger and is not a vehicle-specific bolt-on assembly.\u003c\/li\u003e\n\u003cli\u003eGarrett’s 350–725 horsepower range is a compressor-based flywheel-horsepower reference. Actual output depends on engine airflow, fuel, charge-air temperature, exhaust-manifold design, turbine housing, boost pressure, backpressure, and tune.\u003c\/li\u003e\n\u003cli\u003eThe 0.61 A\/R V-band housing prioritizes early response and may create greater turbine-side restriction as airflow and power approach the upper end of the G30-725 range.\u003c\/li\u003e\n\u003cli\u003eThe 0.83 A\/R configurations provide the broadest general balance between boost response and turbine-flow capacity for responsive street and track applications.\u003c\/li\u003e\n\u003cli\u003eThe 1.01 A\/R configurations provide additional exhaust-flow capacity and may reduce turbine inlet pressure at high engine speed, with some reduction in low-speed boost response.\u003c\/li\u003e\n\u003cli\u003eThe 1.21 A\/R V-band housing provides the greatest exhaust-flow capacity among the open-scroll options and is best reserved for applications that can accept slower boost response.\u003c\/li\u003e\n\u003cli\u003eThe externally wastegated housings provide greater flexibility in wastegate size, placement, spring selection, and bypass-flow capacity. The external wastegate and all related plumbing are sold separately.\u003c\/li\u003e\n\u003cli\u003eThe internally wastegated variants are complete Garrett assemblies with a calibrated 0.5-bar actuator. Final boost pressure depends on actuator preload, boost-control strategy, exhaust backpressure, manifold pressure, and wastegate-flow capacity.\u003c\/li\u003e\n\u003cli\u003eGarrett identifies the internal-wastegate housings as having a large bypass port intended to improve boost control, but boost creep remains application dependent.\u003c\/li\u003e\n\u003cli\u003eThe divided 1.06 A\/R T4 housing should be used with a properly divided manifold and an external-wastegate arrangement that preserves the intended pulse separation. Installing a divided housing on an undivided manifold does not provide the same twin-scroll behavior.\u003c\/li\u003e\n\u003cli\u003eThe G30-725 supercore is compatible only with the verified standard-rotation G30 housings listed in this description. Reverse-rotation housings are not interchangeable.\u003c\/li\u003e\n\u003cli\u003eG-Series II uses the corresponding first-generation G30 compressor and turbine housing interfaces, but every existing installation should be confirmed by part number before components are reused.\u003c\/li\u003e\n\u003cli\u003eTurbine-inlet flange or clamp, turbine-outlet weld flange and clamp, external wastegate where applicable, oil-feed line, oil-drain line, coolant hoses, intake plumbing, charge piping, exhaust manifold, downpipe, boost-control hardware, and application-specific fasteners are not included unless separately stated.\u003c\/li\u003e\n\u003cli\u003eGarrett turbo-speed sensor kits, compressor-speed display hardware, and electronic boost-control components are sold separately.\u003c\/li\u003e\n\u003cli\u003eFinal turbocharger and turbine-housing selection should be based on an engine-airflow model and the intended operating range rather than displacement or peak-power target alone.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEmissions and Competition-Use Notice\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThis universal performance turbocharger is intended for racing and competition applications. Vehicle modifications must comply with all applicable emissions, registration, noise, and road-use requirements. It is the purchaser’s responsibility to determine whether the product is legal for the intended vehicle and use.\u003c\/em\u003e\u003c\/p\u003e","brand":"Garrett","offers":[{"title":"Supercore Only - No Turbine Housing (+$0)","offer_id":46279241760825,"sku":null,"price":1965.89,"currency_code":"USD","in_stock":true},{"title":"Supercore + 740902-0086 0.61 V-band Open V-band External (+$830.28)","offer_id":46279263977529,"sku":null,"price":2796.17,"currency_code":"USD","in_stock":true},{"title":"Supercore + 740902-0087 0.83 V-band Open V-band External (+$830.28)","offer_id":46279273447481,"sku":null,"price":2796.17,"currency_code":"USD","in_stock":true},{"title":"Supercore + 740902-0088 1.01 V-band Open V-band External (+$838.58)","offer_id":46279273480249,"sku":null,"price":2804.47,"currency_code":"USD","in_stock":true},{"title":"Supercore + 740902-0089 1.21 V-band Open V-band External (+$838.58)","offer_id":46279273513017,"sku":null,"price":2804.47,"currency_code":"USD","in_stock":true},{"title":"Supercore + 740902-0090 0.83 T3 Open V-band External (+$830.28)","offer_id":46279273545785,"sku":null,"price":2796.17,"currency_code":"USD","in_stock":true},{"title":"Supercore + 740902-0091 1.01 T3 Open V-band External (+$838.58)","offer_id":46279273578553,"sku":null,"price":2804.47,"currency_code":"USD","in_stock":true},{"title":"Supercore + 740902-0092 1.06 T4 Divided V-band External (+$870.33)","offer_id":46279273611321,"sku":null,"price":2836.22,"currency_code":"USD","in_stock":true},{"title":"Supercore + 740902-0094 0.83 V-band Open V-band Internal (+$1035.74)","offer_id":46279273644089,"sku":null,"price":3001.63,"currency_code":"USD","in_stock":true},{"title":"Supercore + 740902-0095 1.01 V-band Open V-band Internal (+$1035.74)","offer_id":46279273676857,"sku":null,"price":3001.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/8512\/9017\/files\/G30-725.png?v=1785963944","url":"https:\/\/rad-power.com\/products\/garrett-g-series-ii-g30-725-54mm-turbocharger-1","provider":"RAD","version":"1.0","type":"link"}