{"product_id":"fuel-injector-clinic-1650cc-high-z-injector-set-1999-2006-gm-4-8l-5-3l-6-0l-truck","title":"Fuel Injector Clinic 1650cc High-Z Injector Set — 1999–2006 GM 4.8L \/ 5.3L \/ 6.0L Truck","description":"\u003cp\u003e\u003cstrong\u003eFuel Injector Clinic 1650cc High-Z Injector Set — 1999–2006 GM 4.8L \/ 5.3L \/ 6.0L Truck\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Numbers: IS304-1650H \u0026amp; \u003cspan\u003ePGTJETR8Q\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Fuel Injector Clinic IS304-1650H is an application-specific set of eight high-impedance injectors for 1999–2006 GM 4.8L, 5.3L, and 6.0L truck engines. FIC rates each injector at 1650 cc\/min and 160 lb\/hr at its standard 3-bar test pressure of 43.5 psi. At the OE 4-bar \/ 58 psi fuel pressure used for this application, FIC rates each injector at approximately 1900 cc\/min and 180 lb\/hr.\u003c\/p\u003e\n\u003cp\u003eThis injector set uses Fuel Injector Clinic’s 1650cc high-impedance injector in the correct physical configuration for the listed GM truck application. The injectors use Jetronic\/EV1 electrical connections rather than the original GM\/Delphi harness connector used on the vehicle. FIC supplies solder-in Jetronic pigtails as the standard wiring option and offers an optional plug-and-play Jetronic\/EV1-to-GM\/Delphi adapter set for installations where cutting and soldering the factory harness is not desired.\u003c\/p\u003e\n\u003cp\u003eFIC’s 1650cc high-impedance injector combines substantial fuel capacity with the short-pulse-width control required for stable idle and street drivability when the ECU is configured with the correct injector characterization data. The injector uses stainless-alloy valve construction and is compatible with pump gasoline, E85, Q16, VP Import, FTW, and other MTBE oxygenated racing fuels.\u003c\/p\u003e\n\u003cp\u003eEach injector is individually serial numbered and matched using Fuel Injector Clinic’s Data Match Technology. The supplied Data Match Sheet provides measured flow-matching and latency information, and FIC provides plug-and-play GM ECU injector data through its technical-data library.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSet of eight Fuel Injector Clinic high-impedance injectors\u003c\/li\u003e\n\u003cli\u003eApplication-specific fitment for 1999–2006 GM 4.8L, 5.3L, and 6.0L truck engines\u003c\/li\u003e\n\u003cli\u003e1650 cc\/min per injector at 43.5 psi \/ 3 bar\u003c\/li\u003e\n\u003cli\u003e160 lb\/hr per injector at 43.5 psi \/ 3 bar\u003c\/li\u003e\n\u003cli\u003eApproximately 1900 cc\/min per injector at OE 58 psi \/ 4 bar fuel pressure\u003c\/li\u003e\n\u003cli\u003e180 lb\/hr per injector at OE 58 psi \/ 4 bar fuel pressure\u003c\/li\u003e\n\u003cli\u003eSaturated \/ high-impedance electrical design\u003c\/li\u003e\n\u003cli\u003eJetronic\/EV1 injector electrical connection\u003c\/li\u003e\n\u003cli\u003eSolder-in Jetronic pigtails supplied with the standard configuration\u003c\/li\u003e\n\u003cli\u003eOptional plug-and-play Jetronic\/EV1-to-GM\/Delphi harness adapters available\u003c\/li\u003e\n\u003cli\u003eStainless-alloy valve construction\u003c\/li\u003e\n\u003cli\u003eCompatible with pump gasoline, E85, Q16, VP Import, FTW, and other MTBE oxygenated race fuels\u003c\/li\u003e\n\u003cli\u003eFuel Injector Clinic Data Match Technology\u003c\/li\u003e\n\u003cli\u003eEach injector individually serial numbered\u003c\/li\u003e\n\u003cli\u003eMatched flow and latency information supplied on the Data Match Sheet\u003c\/li\u003e\n\u003cli\u003ePlug-and-play GM ECU injector data available from Fuel Injector Clinic\u003c\/li\u003e\n\u003cli\u003eShort-pulse-width control intended to support stable idle and street drivability with correct ECU data\u003c\/li\u003e\n\u003cli\u003eAll O-rings required for the listed factory application included\u003c\/li\u003e\n\u003cli\u003eFuel Injector Clinic lifetime warranty against defects in original manufacture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eKit Includes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEight Fuel Injector Clinic 1650cc high-impedance injectors\u003c\/li\u003e\n\u003cli\u003eApplication-specific upper and lower O-rings for the listed factory installation\u003c\/li\u003e\n\u003cli\u003eEight Jetronic quick-release solder-in pigtails when the standard PGTJETR8Q wiring option is selected\u003c\/li\u003e\n\u003cli\u003eOptional set of eight Jetronic\/EV1-female to GM\/Delphi-male plug-and-play adapters when PADPJtoGM8 is selected instead\u003c\/li\u003e\n\u003cli\u003eIndividual injector serial numbers\u003c\/li\u003e\n\u003cli\u003eFuel Injector Clinic Data Match Sheet with measured matching and latency information\u003c\/li\u003e\n\u003cli\u003eAccess to applicable Fuel Injector Clinic GM ECU injector data\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFlow and Test Conditions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNominal injector size: 1650 cc\/min\u003c\/li\u003e\n\u003cli\u003eFlow at 43.5 psi \/ 3 bar: 1650 cc\/min per injector\u003c\/li\u003e\n\u003cli\u003eMass flow at 43.5 psi \/ 3 bar: 160 lb\/hr per injector\u003c\/li\u003e\n\u003cli\u003eFlow at OE 58 psi \/ 4 bar: approximately 1900 cc\/min per injector\u003c\/li\u003e\n\u003cli\u003eMass flow at OE 58 psi \/ 4 bar: 180 lb\/hr per injector\u003c\/li\u003e\n\u003cli\u003eFIC rating test temperature: 90°F fuel temperature\u003c\/li\u003e\n\u003cli\u003eFIC calibration fluid: CF-16B\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical and Mechanical Configuration\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInjector type: saturated \/ high impedance\u003c\/li\u003e\n\u003cli\u003eQuantity: eight injectors\u003c\/li\u003e\n\u003cli\u003eInjector connector: Jetronic\/EV1\u003c\/li\u003e\n\u003cli\u003eFactory harness connector: GM\/Delphi\u003c\/li\u003e\n\u003cli\u003eStandard wiring option: eight solder-in Jetronic quick-release pigtails, FIC part number PGTJETR8Q\u003c\/li\u003e\n\u003cli\u003eOptional wiring option: eight Jetronic\/EV1-female to GM\/Delphi-male plug-and-play adapters, FIC part number PADPJtoGM8\u003c\/li\u003e\n\u003cli\u003eValve construction: stainless alloy\u003c\/li\u003e\n\u003cli\u003eFitment: application-specific drop-in mechanical configuration for the listed 1999–2006 GM truck engines\u003c\/li\u003e\n\u003cli\u003eApplication-specific O-rings are included\u003c\/li\u003e\n\u003cli\u003eExact injector body length is not published on FIC’s current product page\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFuel Compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePump gasoline\u003c\/li\u003e\n\u003cli\u003eE85\u003c\/li\u003e\n\u003cli\u003eQ16\u003c\/li\u003e\n\u003cli\u003eVP Import\u003c\/li\u003e\n\u003cli\u003eFTW\u003c\/li\u003e\n\u003cli\u003eOther MTBE oxygenated racing fuels identified as compatible by Fuel Injector Clinic\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInjector Matching and ECU Data\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMatched using Fuel Injector Clinic Data Match Technology\u003c\/li\u003e\n\u003cli\u003eEach injector individually serial numbered\u003c\/li\u003e\n\u003cli\u003eData Match Sheet supplied with measured matching results and latency information\u003c\/li\u003e\n\u003cli\u003ePlug-and-play GM ECU injector data available from Fuel Injector Clinic\u003c\/li\u003e\n\u003cli\u003eCorrect injector characterization must be entered into the ECU for proper fueling, idle quality, transient response, and drivability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable Wiring Configurations\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolder-In Pigtails — PGTJETR8Q:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eset of eight Jetronic quick-release injector plugs with pigtails. This is FIC’s standard wiring selection for IS304-1650H and requires replacing the original injector connectors on the vehicle harness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Harness Adapters — PADPJtoGM8:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eset of eight Jetronic\/EV1-female to GM\/Delphi-male adapters. This option connects the injectors to the original GM\/Delphi harness without cutting or soldering the vehicle wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFuel Injector Clinic lists IS304-1650H specifically for 1999–2006 GM 4.8L, 5.3L, and 6.0L truck motors. Confirm the intake manifold, fuel rail, and injector configuration before ordering when the engine uses aftermarket induction components.\u003c\/li\u003e\n\u003cli\u003eThe 1650cc rating is measured at 43.5 psi \/ 3 bar. The same injector flows approximately 1900 cc\/min and 180 lb\/hr at the application’s OE 58 psi \/ 4 bar fuel pressure.\u003c\/li\u003e\n\u003cli\u003eInjector flow changes with differential fuel pressure. Fuel-system sizing should be based on the actual regulated differential pressure and fuel type rather than the nominal 1650cc designation alone.\u003c\/li\u003e\n\u003cli\u003eThese injectors use Jetronic\/EV1 electrical connections. Select either the supplied solder-in pigtails or the optional plug-and-play GM\/Delphi harness adapters according to the desired wiring approach.\u003c\/li\u003e\n\u003cli\u003eThese injectors require appropriate ECU characterization. Use the FIC-supplied flow, latency, and characterization data rather than generic injector values.\u003c\/li\u003e\n\u003cli\u003eFuel pumps, fuel-pressure regulator, fuel rails, filters, feed and return lines, ECU configuration, and other fuel-system components are not included.\u003c\/li\u003e\n\u003cli\u003eFIC supplies the O-rings required for the listed factory application. Aftermarket rails, intake manifolds, or unusual injector mounting arrangements may require different seals, spacers, or fitment hardware.\u003c\/li\u003e\n\u003cli\u003eThis product is a port-fuel-injector set and is not a direct-injection injector replacement.\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\u003ePerformance fuel-system modifications may affect vehicle emissions compliance and road-use legality. The purchaser and installer are responsible for determining that the completed vehicle complies with all applicable emissions, registration, fuel-system, and competition-use requirements.\u003c\/em\u003e\u003c\/p\u003e","brand":"Fuel Injector Clinic","offers":[{"title":"Solder in Pigtails (PGTJETR8Q) ($1623.00)","offer_id":46289757831225,"sku":null,"price":1623.0,"currency_code":"USD","in_stock":true},{"title":"Plug And Play Adapter to Stock Harness (PADPJtoGM8) ($1713.00)","offer_id":46289757863993,"sku":null,"price":1623.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/8512\/9017\/files\/IS304-1650H.webp?v=1786209090","url":"https:\/\/rad-power.com\/products\/fuel-injector-clinic-1650cc-high-z-injector-set-1999-2006-gm-4-8l-5-3l-6-0l-truck","provider":"RAD","version":"1.0","type":"link"}