{"product_id":"0g6454-stepper-motor-assembly-for-generac-guardian-990-992-999-generator-gth990","title":"0G6454 Stepper Motor Assembly for Generac Guardian 990 992 999 Generator GTH990","description":"\u003cstrong\u003eThis Stepper Motor Assembly is an OEM-style replacement part compatible with Generac Guardian 990, 992, and 999 series generators and matches OEM part numbers 0G6454, GTH990.\u003c\/strong\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003eThe stepper motor assembly controls idle air control on Generac Guardian generator engines, ensuring stable RPM under load. This stepper motor replaces faulty units on 990, 992, and 999 models powered by GTH990 engines. Essential for maintaining generator reliability during standby and prime power applications.\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePrecision-stepped motor for accurate idle air bypass regulation\u003c\/li\u003e\n\u003cli\u003ePlug-and-play connector matches factory wiring harness—no splicing\u003c\/li\u003e\n\u003cli\u003eDurable construction resists vibration and harsh generator environments\u003c\/li\u003e\n\u003cli\u003eRestores smooth startup and consistent idle speed on Guardian series generators\u003c\/li\u003e\n\u003cli\u003eIncludes mounting hardware and gasket for direct installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGenerac Guardian 990 (GTH990 engine)\u003c\/li\u003e\n\u003cli\u003eGenerac Guardian 992 (GTH990 engine)\u003c\/li\u003e\n\u003cli\u003eGenerac Guardian 999 (GTH990 engine)\u003c\/li\u003e\n\u003cli\u003eOther Generac models with GTH990 engine requiring stepper motor 0G6454\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Uses\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReplacement stepper motor for Generac home standby generator service\u003c\/li\u003e\n\u003cli\u003eRestoring idle control after stepper motor failure or hunting idle\u003c\/li\u003e\n\u003cli\u003ePreventive maintenance on high-hour Guardian 990\/992\/999 generators\u003c\/li\u003e\n\u003cli\u003eGenerator engine overhaul and fuel system refurbishment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e 0G6454, GTH990\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Type:\u003c\/strong\u003e Stepper motor, idle air control valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Generac Guardian 990, 992, 999 series generators\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How do I know if my stepper motor needs replacement?\u003cstrong\u003e A:\u003c\/strong\u003e Symptoms include erratic idle, engine hunting, or failure to start; disconnect the stepper motor and check for debris or sticking plunger.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this assembly require calibration after installation?\u003cstrong\u003e A:\u003c\/strong\u003e No manual calibration is needed; the generator's controller will automatically relearn stepper motor positions after a few start cycles.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eProduct appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"DURAFORCE","offers":[{"title":"Default Title","offer_id":53679678095633,"sku":"ZZ3A00572","price":81.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/57_e3608251-f833-410f-848c-bd20dbfb74ec.jpg?v=1781652728","url":"https:\/\/www.duraforce.com\/products\/0g6454-stepper-motor-assembly-for-generac-guardian-990-992-999-generator-gth990","provider":"DURAFORCE","version":"1.0","type":"link"}