{"product_id":"fuel-injector-clinic-1200cc-high-z-injector-set-1999-2006-gm-4-8l-5-3l-6-0l-truck","title":"Fuel Injector Clinic 1200cc High-Z Injector Set — 1999–2006 GM 4.8L \/ 5.3L \/ 6.0L Truck","description":"\u003cp\u003e\u003cstrong\u003eFuel Injector Clinic 1200cc 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: IS304-1200H \u0026amp; PGTJETR8Q\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Fuel Injector Clinic IS304-1200H is an application-specific set of eight high-impedance injectors for 1999–2006 GM 4.8L, 5.3L, and 6.0L truck engines. FIC’s standard product configuration is IS304-1200H \u0026amp; PGTJETR8Q, which includes eight Jetronic quick-release solder-in pigtails. For installations where cutting and soldering the original injector harness is not desired, FIC also offers the PADPJtoGM8 plug-and-play adapter set.\u003c\/p\u003e\n\u003cp\u003eEach injector is rated at 1200 cc\/min and 110 lb\/hr at FIC’s standard 43.5 psi \/ 3 bar test pressure. At the OE 58 psi \/ 4 bar fuel pressure used for this application, FIC rates each injector at approximately 1350 cc\/min and 130 lb\/hr.\u003c\/p\u003e\n\u003cp\u003eThe injectors use a saturated \/ high-impedance design and are engineered for strong linearity and short-pulse-width repeatability. FIC provides plug-and-play GM ECU injector data and matches each set using its Data Match Technology to support accurate fueling, stable idle, and predictable drivability when the ECU is configured with the correct injector characterization.\u003c\/p\u003e\n\u003cp\u003eEach injector is individually serial numbered, and the supplied Data Match Sheet provides measured flow-matching and latency information. FIC flow-tests and rates the injectors at 43.5 psi \/ 3 bar with fuel at 90°F using CF-16B calibration fluid.\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\u003eStandard FIC product configuration: IS304-1200H \u0026amp; PGTJETR8Q\u003c\/li\u003e\n\u003cli\u003e1200 cc\/min \/ 110 lb\/hr per injector at 43.5 psi \/ 3 bar\u003c\/li\u003e\n\u003cli\u003eApproximately 1350 cc\/min \/ 130 lb\/hr per injector at OE 58 psi \/ 4 bar\u003c\/li\u003e\n\u003cli\u003eSaturated \/ high-impedance electrical design\u003c\/li\u003e\n\u003cli\u003eStandard configuration includes eight Jetronic quick-release solder-in pigtails, PGTJETR8Q\u003c\/li\u003e\n\u003cli\u003eOptional PADPJtoGM8 plug-and-play stock-harness adapter set available\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\u003eData Match Sheet with flow-matching and latency information included\u003c\/li\u003e\n\u003cli\u003ePlug-and-play GM ECU injector data available from Fuel Injector Clinic\u003c\/li\u003e\n\u003cli\u003eStrong linearity and short-pulse-width repeatability for accurate low-pulse fueling\u003c\/li\u003e\n\u003cli\u003eAll O-rings required for the listed factory application included\u003c\/li\u003e\n\u003cli\u003eCompatible with gasoline and E85\u003c\/li\u003e\n\u003cli\u003eFuel Injector Clinic lifetime warranty against defects in original manufacture\u003c\/li\u003e\n\u003cli\u003ePreviously sold as IS304-1100H\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 1200cc high-impedance injectors, IS304-1200H\u003c\/li\u003e\n\u003cli\u003eEight Jetronic quick-release solder-in pigtails, PGTJETR8Q, with the standard configuration\u003c\/li\u003e\n\u003cli\u003eApplication-specific injector O-rings\u003c\/li\u003e\n\u003cli\u003eIndividual injector serial numbers\u003c\/li\u003e\n\u003cli\u003eFuel Injector Clinic Data Match Sheet with flow-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: 1200 cc\/min\u003c\/li\u003e\n\u003cli\u003eFlow at 43.5 psi \/ 3 bar: 1200 cc\/min per injector\u003c\/li\u003e\n\u003cli\u003eMass flow at 43.5 psi \/ 3 bar: 110 lb\/hr per injector\u003c\/li\u003e\n\u003cli\u003eFlow at OE 58 psi \/ 4 bar: approximately 1350 cc\/min per injector\u003c\/li\u003e\n\u003cli\u003eMass flow at OE 58 psi \/ 4 bar: 130 lb\/hr per injector\u003c\/li\u003e\n\u003cli\u003eFIC test pressure: 43.5 psi \/ 3 bar\u003c\/li\u003e\n\u003cli\u003eFIC test fuel temperature: 90°F\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\u003eStandard wiring configuration: IS304-1200H \u0026amp; PGTJETR8Q\u003c\/li\u003e\n\u003cli\u003eIncluded standard pigtails: eight Jetronic quick-release connectors with solder-in leads\u003c\/li\u003e\n\u003cli\u003eOptional plug-and-play configuration: IS304-1200H \u0026amp; PADPJtoGM8\u003c\/li\u003e\n\u003cli\u003ePADPJtoGM8 adapter interface: Jetronic \/ EV1 female to GM \/ Delphi male\u003c\/li\u003e\n\u003cli\u003eApplication-specific O-rings included\u003c\/li\u003e\n\u003cli\u003eExact injector body length is not published on FIC’s current IS304-1200H 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\u003eGasoline\u003c\/li\u003e\n\u003cli\u003eE85\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 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 — IS304-1200H \u0026amp; PGTJETR8Q:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFIC’s standard configuration. Includes eight Jetronic quick-release pigtails for replacing the existing injector connectors on the vehicle harness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Stock-Harness Adapters — IS304-1200H \u0026amp; PADPJtoGM8:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003euses eight Jetronic \/ EV1-female to GM \/ Delphi-male adapters, allowing connection to the factory-style harness without cutting or soldering the original injector 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 IS304-1200H specifically for 1999–2006 GM 4.8L, 5.3L, and 6.0L truck motors.\u003c\/li\u003e\n\u003cli\u003eThe 1200cc rating is measured at 43.5 psi \/ 3 bar. At the OE 58 psi \/ 4 bar fuel pressure, FIC rates the same injector at approximately 1350 cc\/min and 130 lb\/hr.\u003c\/li\u003e\n\u003cli\u003eInjector flow changes with differential fuel pressure. Fuel-system sizing should be based on actual regulated differential pressure, fuel type, target power, and injector duty cycle rather than the nominal 1200cc designation alone.\u003c\/li\u003e\n\u003cli\u003eThe standard IS304-1200H \u0026amp; PGTJETR8Q configuration requires replacing the existing injector connectors with the included solder-in pigtails.\u003c\/li\u003e\n\u003cli\u003eThe optional IS304-1200H \u0026amp; PADPJtoGM8 configuration retains the factory-style harness connectors by using plug-and-play adapters.\u003c\/li\u003e\n\u003cli\u003eThis injector set was previously sold by FIC as IS304-1100H.\u003c\/li\u003e\n\u003cli\u003eUse FIC-supplied injector characterization and latency data rather than generic 1200cc injector values.\u003c\/li\u003e\n\u003cli\u003eFuel pumps, fuel-pressure regulator, fuel rails, filters, feed and return plumbing, ECU, ECU configuration, and tuning are not included.\u003c\/li\u003e\n\u003cli\u003eFIC supplies the O-rings required for the listed factory application. Aftermarket or unusual rail and manifold combinations should be checked for injector fitment before ordering.\u003c\/li\u003e\n\u003cli\u003eThis 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) ($1077.00)","offer_id":46291697467449,"sku":null,"price":1077.0,"currency_code":"USD","in_stock":true},{"title":"Plug And Play Adapter to Stock Harness (PADPJtoGM8) ($1167.00)","offer_id":46291697500217,"sku":null,"price":1167.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/8512\/9017\/files\/IS304-1200h.webp?v=1786293576","url":"https:\/\/rad-power.com\/products\/fuel-injector-clinic-1200cc-high-z-injector-set-1999-2006-gm-4-8l-5-3l-6-0l-truck","provider":"RAD","version":"1.0","type":"link"}