{"product_id":"hiyeve-ignition-coil-for-honda-gx390-gx340-4-prong-replacement-30500-z5t-003-oem-fit-for-generators","title":"Hiyeve ignition coil for Honda GX390 GX340 - 4-prong replacement 30500-Z5T-003, OEM-fit for generators","description":"\u003cp\u003e\u003cstrong\u003eHiyeve 30500-Z5T-003 is a direct-fit ignition coil with a four-prong connector designed to replace Honda OEM coils on GX340 and GX390 engines and compatible generators.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for small engines used in generators and equipment, this Hiyeve ignition coil replaces Honda part numbers 30500-Z5T-003 and 30500-Z5R-003 and fits many GX340\/GX390 families and related EM\/EB series models. It restores reliable spark delivery by storing and releasing the high-voltage pulse the engine needs to ignite the air-fuel mixture. Before ordering, verify your engine's OEM number to ensure compatibility — images can look similar while part numbers differ.\u003c\/p\u003e\n\n\u003ch3\u003eWhich Honda models and units does this coil fit?\u003c\/h3\u003e\n\u003cp\u003eThe coil is engineered to match multiple GX340 and GX390 revisions and several portable generator models. It lists compatibility with specific VIN ranges and Type codes for accurate fitment. Always cross-check the OEM number stamped on your existing coil to avoid mismatches.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits GX390T2, GX390R2, GX390K2, GX340RT2 and related GX340\/GX390 types\u003c\/li\u003e\n  \u003cli\u003eCompatible with generators EM5000SXK3, EM6500SXK2, EM3800SX and similar models\u003c\/li\u003e\n  \u003cli\u003eReplaces Honda part numbers 30500-Z5T-003 and 30500-Z5R-003\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this ignition coil improve engine performance?\u003c\/h3\u003e\n\u003cp\u003eThis coil provides the necessary high-voltage pulse for spark plugs, helping the engine fire consistently. By reliably storing and releasing electrical energy, it helps reduce misfires and unstable idling caused by a failing coil. It doesn’t change engine tuning but restores intended ignition performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDelivers stable spark pulses for smoother starts and steady idle\u003c\/li\u003e\n  \u003cli\u003eReduces missed firings that cause rough operation\u003c\/li\u003e\n  \u003cli\u003eEngineers to match OEM electrical and mounting specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should you check before replacing the coil?\u003c\/h3\u003e\n\u003cp\u003eConfirm compatibility by comparing the OEM part number on your old coil with the replacement listing; visual similarity alone can be misleading. Inspect connector type (four-prong), mounting orientation, and VIN\/type numbers in your equipment manual to ensure a correct swap. If electrical symptoms persist after installation, test related ignition components and wiring.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMatch OEM number: 30500-Z5T-003 or 30500-Z5R-003\u003c\/li\u003e\n  \u003cli\u003eVerify four-prong connector and mounting hole alignment\u003c\/li\u003e\n  \u003cli\u003eCheck wiring harness and spark plug condition during install\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do you install and maintain the replacement coil safely?\u003c\/h3\u003e\n\u003cp\u003eInstallation is a straightforward mechanical swap on most GX340\/GX390 engines: disconnect the battery, remove the old coil, mount the new unit and reconnect wiring. Use manufacturer torque specs for fasteners and keep the ignition area clean to prevent tracking and corrosion. If you’re not comfortable with ignition work, have a qualified technician install it.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDisconnect power before beginning work\u003c\/li\u003e\n  \u003cli\u003eSecure coil with correct fastener torque and alignment\u003c\/li\u003e\n  \u003cli\u003eRecheck connections and test engine under light load\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Mechanics, equipment owners and DIYers who maintain Honda GX340\/GX390 engines or compatible EM\/EB series generators seeking a reliable, OEM-equivalent ignition coil. It’s intended for anyone needing a direct replacement that restores consistent spark delivery; ideal when part number compatibility is confirmed and a dependable, budget-friendly replacement is required.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this coil replace part number 30500-Z5T-003?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This Hiyeve coil is listed as a replacement for Honda 30500-Z5T-003 and 30500-Z5R-003 when the connector and mounting match.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I install it myself on a GX390?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, if you’re comfortable with basic engine wiring and follow safety steps; otherwise have a technician install it.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Hiyeve","offers":[{"title":"Default Title","offer_id":48084875673758,"sku":"B0B8CV5WVM","price":37.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/hiyeve-ignition-coil-front-view.jpg?v=1785864843","url":"https:\/\/northtrailauto.ca\/products\/hiyeve-ignition-coil-for-honda-gx390-gx340-4-prong-replacement-30500-z5t-003-oem-fit-for-generators","provider":"North Trail Auto","version":"1.0","type":"link"}