{"product_id":"garrett-g-series-ii-g40-1000-62mm-turbocharger","title":"Garrett G-Series II G40-1000 62mm Turbocharger","description":"\u003cp\u003e\u003cstrong\u003eGarrett G-Series II G40-1000 62mm Turbocharger — Select Turbine Housing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupercore Part Number: 938272-5001S\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Garrett G-Series II G40-1000 is a standard-rotation, dual-ceramic-ball-bearing turbocharger designed for high-output street, competition, and specialty-performance applications requiring substantial airflow without moving to the larger 71mm G40 compressor. Garrett rates the G40-1000 for 500–1,000 horsepower and references engine displacements from 2.0 to 6.0 liters. Garrett horsepower ratings represent potential flywheel horsepower based on compressor capability and are not a guaranteed wheel-horsepower figure.\u003c\/p\u003e\n\u003cp\u003eThe G40-1000 uses a 62mm inducer and 88mm exducer compressor wheel with a 51-trim profile and 0.80 compressor-housing A\/R. The turbine stage uses a 77mm inducer and 70mm exducer wheel with an 84-trim profile. This combination places the G40-1000 above Garrett’s smaller G35 frame while retaining a 62mm compressor inducer, making it particularly useful where turbine flow, exhaust-side durability, and upper-range power capability are more important than minimizing overall turbocharger size.\u003c\/p\u003e\n\u003cp\u003eAs part of Garrett’s G-Series II range, the G40-1000 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 improved efficiency at high flow rates. The G-Series II supercore retains compatibility with Garrett’s first-generation G40 compressor and turbine housings, allowing an existing standard-rotation G40 installation to be upgraded without redesigning the entire turbo system, provided the current housing configuration is confirmed compatible.\u003c\/p\u003e\n\u003cp\u003eThis listing is structured as a selectable-housing product. The Garrett 938272-5001S supercore is combined with one of eight verified standard-rotation G40 turbine-housing kits, or it may be purchased as a supercore only. All available housings are externally wastegated, use a V-band turbine outlet, and are offered either with an open-scroll V-band inlet or a divided T4 inlet. Garrett does not list an internally wastegated G40-1000 assembly.\u003c\/p\u003e\n\u003cp\u003eRAD recommends the 1.06 A\/R open-scroll V-band inlet and V-band outlet housing, Garrett part number 757707-0029, as the general catalog default. It occupies the middle of the available A\/R range, avoids the manifold and wastegate-layout requirements of a divided T4 system, and provides a better balance of response and exhaust-flow capacity for typical 4.0–6.0-liter single-turbo applications than either the smallest 0.85 A\/R or largest 1.19 A\/R housing. Final housing selection should still be based on engine displacement, power target, exhaust-manifold design, intended turbine pressure ratio, and desired boost-response characteristics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGarrett G-Series II G40-1000 standard-rotation supercore\u003c\/li\u003e\n\u003cli\u003eGarrett horsepower reference range: 500–1,000 hp\u003c\/li\u003e\n\u003cli\u003eGarrett displacement reference range: 2.0–6.0 liters\u003c\/li\u003e\n\u003cli\u003e62mm compressor inducer and 88mm compressor exducer\u003c\/li\u003e\n\u003cli\u003e77mm turbine inducer and 70mm turbine exducer\u003c\/li\u003e\n\u003cli\u003eDual ceramic ball-bearing center section 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\u003eImproved high-flow compressor efficiency compared with the first-generation G-Series configuration\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\u003eMachined compressor-housing port for an optional Garrett turbo-speed sensor\u003c\/li\u003e\n\u003cli\u003eWater-cooled center housing with Garrett water fittings included with the supercore\u003c\/li\u003e\n\u003cli\u003eStainless-steel turbine housings rated by Garrett for temperatures up to 1,050°C\u003c\/li\u003e\n\u003cli\u003eEight verified external-wastegate turbine-housing options\u003c\/li\u003e\n\u003cli\u003eOpen-scroll V-band and divided T4 turbine-inlet configurations\u003c\/li\u003e\n\u003cli\u003eV-band turbine outlet on every available housing\u003c\/li\u003e\n\u003cli\u003eCenter-housing-to-turbine-housing V-band connection permits full rotational positioning with Garrett non-wastegated housings\u003c\/li\u003e\n\u003cli\u003eCompatible with the standard-rotation Garrett G40 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 G40-1000 supercore, part number 938272-5001S\u003c\/li\u003e\n\u003cli\u003eCompressor housing, compressor wheel, center housing rotating assembly, and turbine wheel\u003c\/li\u003e\n\u003cli\u003eGarrett water fittings supplied with the supercore\u003c\/li\u003e\n\u003cli\u003eSelected Garrett G40 turbine-housing kit when a complete housing variant is ordered\u003c\/li\u003e\n\u003cli\u003eGarrett gasket kit packaged with the selected turbine-housing kit\u003c\/li\u003e\n\u003cli\u003eSupercore-only variant excludes the turbine housing\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: 62mm\u003c\/li\u003e\n\u003cli\u003eCompressor exducer: 88mm\u003c\/li\u003e\n\u003cli\u003eCompressor trim: 51\u003c\/li\u003e\n\u003cli\u003eCompressor-housing A\/R: 0.80\u003c\/li\u003e\n\u003cli\u003eCompressor inlet: approximately 4.00-inch hose connection\u003c\/li\u003e\n\u003cli\u003eCompressor outlet: approximately 2.50-inch hose connection\u003c\/li\u003e\n\u003cli\u003eMaximum allowable turbocharger speed: 125,000 rpm\u003c\/li\u003e\n\u003cli\u003eOptional Garrett turbo-speed sensor kits are 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: 77mm\u003c\/li\u003e\n\u003cli\u003eTurbine exducer: 70mm\u003c\/li\u003e\n\u003cli\u003eTurbine trim: 84\u003c\/li\u003e\n\u003cli\u003eTurbine-wheel material: high-temperature nickel-based superalloy\u003c\/li\u003e\n\u003cli\u003eTurbine-housing material: stainless steel\u003c\/li\u003e\n\u003cli\u003eTurbine-housing temperature rating: up to 1,050°C\u003c\/li\u003e\n\u003cli\u003eWastegate arrangement: external wastegate required for every listed housing\u003c\/li\u003e\n\u003cli\u003eTurbine outlet: V-band on every listed housing\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\u003eCoolant connections: Garrett -6AN water fittings supplied with the supercore\u003c\/li\u003e\n\u003cli\u003eOil-feed and oil-drain plumbing must be selected and fabricated for the application\u003c\/li\u003e\n\u003cli\u003eOil pressure, feed restriction, 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\u003e0.85 A\/R V-Band \/ V-Band — Garrett 757707-0027:\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\u003e0.95 A\/R V-Band \/ V-Band — Garrett 757707-0028:\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\u003e1.06 A\/R V-Band \/ V-Band — Garrett 757707-0029:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eopen-scroll V-band turbine inlet, V-band turbine outlet, external wastegate required.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eRAD recommended general catalog default.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.19 A\/R V-Band \/ V-Band — Garrett 757707-0030:\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\u003e0.85 A\/R Divided T4 \/ V-Band — Garrett 757707-0032:\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\u003e0.95 A\/R Divided T4 \/ V-Band — Garrett 757707-0033:\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\u003e1.06 A\/R Divided T4 \/ V-Band — Garrett 757707-0034:\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\u003e1.19 A\/R Divided T4 \/ V-Band — Garrett 757707-0035:\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 938272-5001S:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecompressor housing and complete center rotating assembly supplied without a turbine housing.\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 500–1,000 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 open-scroll V-band housings are generally the simpler choice for custom single-turbo systems because they do not require a true divided manifold and paired wastegate strategy.\u003c\/li\u003e\n\u003cli\u003eThe divided T4 housings 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 0.85 and 0.95 A\/R housings prioritize earlier response and may increase turbine-side restriction as airflow and power rise. The 1.06 and 1.19 A\/R housings provide additional exhaust-flow capacity at the expense of some boost response.\u003c\/li\u003e\n\u003cli\u003eThe G40-1000 supercore is compatible only with the verified standard-rotation G40 housings listed in this description. Reverse-rotation housings and housings from other Garrett frame families are not interchangeable.\u003c\/li\u003e\n\u003cli\u003eGarrett G-Series II uses the corresponding first-generation G40 compressor and turbine housing interfaces, but every existing installation should be confirmed by part number before components are reused.\u003c\/li\u003e\n\u003cli\u003eNo internally wastegated G40-1000 configuration is listed by Garrett. An appropriately sized external wastegate system is required.\u003c\/li\u003e\n\u003cli\u003eTurbine-inlet flange or clamp, turbine-outlet weld flange and clamp, external wastegate, 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":46279050592313,"sku":null,"price":2592.6,"currency_code":"USD","in_stock":true},{"title":"Supercore + 757707-0027 0.85 V-band Open V-band External (+$862.85)","offer_id":46279148273721,"sku":null,"price":3455.45,"currency_code":"USD","in_stock":true},{"title":"Supercore + 757707-0028 0.95 V-band Open V-band External (+$862.85)","offer_id":46279148306489,"sku":null,"price":3455.45,"currency_code":"USD","in_stock":true},{"title":"Supercore + 757707-0029 1.06 V-band Open V-band External (+$862.85)","offer_id":46279148339257,"sku":null,"price":3455.45,"currency_code":"USD","in_stock":true},{"title":"Supercore + 757707-0030 1.19 V-band Open V-band External (+$862.85)","offer_id":46279148372025,"sku":null,"price":3455.45,"currency_code":"USD","in_stock":true},{"title":"Supercore + 757707-0032 0.85 T4 Divided V-band External (+$1047.75)","offer_id":46279148404793,"sku":null,"price":3640.35,"currency_code":"USD","in_stock":true},{"title":"Supercore + 757707-0033 0.95 T4 Divided V-band External (+$924.49)","offer_id":46279148437561,"sku":null,"price":3517.09,"currency_code":"USD","in_stock":true},{"title":"Supercore + 757707-0034 1.06 T4 Divided V-band External (+$924.49)","offer_id":46279148470329,"sku":null,"price":3517.09,"currency_code":"USD","in_stock":true},{"title":"Supercore + 757707-0035 1.19 T4 Divided V-band External (+$924.49)","offer_id":46279148503097,"sku":null,"price":3517.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/8512\/9017\/files\/G40-1000_e19207f9-0151-40be-b3ba-ce1dc94f6d7a.png?v=1785955263","url":"https:\/\/rad-power.com\/products\/garrett-g-series-ii-g40-1000-62mm-turbocharger","provider":"RAD","version":"1.0","type":"link"}