{"product_id":"wetenex-ignition-coil-for-mtd-troy-bilt-craftsman-4p90-engines-951-12220-direct-fit-replacement","title":"Wetenex Ignition Coil for MTD Troy-Bilt Craftsman 4P90 Engines — 951-12220 Direct-Fit Replacement","description":"\u003cp\u003e\u003cstrong\u003eWetenex 951-12220 ignition coil is a direct-fit replacement that restores spark generation for compatible MTD, Troy-Bilt and Craftsman 4P90-series engines and several rear-engine riding mowers.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis replacement coil is engineered to match the mounting footprint and electrical outputs of the original unit so you can quickly return your mower to service. It covers common part numbers used across MTD, Troy-Bilt, Cub Cadet and related lawn tractor families, providing a cost-effective option when the factory coil fails or weakens.\u003c\/p\u003e\n\n\u003ch3\u003eWhich engines and models will this coil work with?\u003c\/h3\u003e\n\u003cp\u003eThe Wetenex 951-12220 is made to fit many 4P90-series engines and a selection of 420cc and 452cc units used by MTD, Troy-Bilt and Cub Cadet. It is also compatible with specific rear-engine riding mower models and several LT-series garden tractor part lists.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 4P90HU \/ 4P90HUA \/ 4P90JHA \/ 4P90JT \/ 4P90JU and related 4P90 variants.\u003c\/li\u003e\n  \u003cli\u003eCompatible with certain 420cc and 452cc engine designations (e.g., 8P92ZU family).\u003c\/li\u003e\n  \u003cli\u003eDirect-fit replacement for part numbers like 751-12220 and 951-12220.\u003c\/li\u003e\n  \u003cli\u003eUsed on select Troy-Bilt, Cub Cadet, Yard-Machines, and MTD riding tractors and LT-series mowers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what tools are needed?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for someone comfortable with small engine maintenance. The coil uses the original mounting holes and electrical connections, so you typically remove the engine cover, unhook the plug wire and mounting screws, and reverse the steps to install the new unit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBasic socket or nut driver set for mounting fasteners.\u003c\/li\u003e\n  \u003cli\u003eScrewdriver for any cover panels and a spark plug boot puller if available.\u003c\/li\u003e\n  \u003cli\u003eGap feeler gauge to check the coil-to-flywheel air gap per engine specs.\u003c\/li\u003e\n  \u003cli\u003eSafety: disconnect spark plug lead and battery (if applicable) before working.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance and reliability can I expect after replacing the coil?\u003c\/h3\u003e\n\u003cp\u003eReplacing a failing coil with this Wetenex unit should restore consistent spark timing and strong ignition, improving starting and engine idle stability. It’s built to meet the electrical and thermal demands of small engine operation under normal lawn-care use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for steady spark delivery across typical RPM ranges.\u003c\/li\u003e\n  \u003cli\u003eDurable encapsulation to resist vibration and moderate heat exposure.\u003c\/li\u003e\n  \u003cli\u003eMeets or replicates OEM mounting and electrical characteristics.\u003c\/li\u003e\n  \u003cli\u003eSold individually — package includes one ignition coil ready for installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I confirm this is the correct replacement for my mower?\u003c\/h3\u003e\n\u003cp\u003eCross-check your engine code and the existing coil part number prior to purchase; compare mounting points and connector types visually. If your OEM part is listed among the compatible numbers (for example 751-12220 or 951-12220) or your engine matches the 4P90 family, this unit is likely correct.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify engine model stamp or service manual engine code.\u003c\/li\u003e\n  \u003cli\u003eCompare the old coil’s shape, mounting hole spacing and plug lead location.\u003c\/li\u003e\n  \u003cli\u003eCheck compatibility lists for your mower make\/model before ordering.\u003c\/li\u003e\n  \u003cli\u003eContact a dealer or technician for uncertain fitment questions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This Wetenex ignition coil is for homeowners, landscapers and small-engine repair shops needing a dependable, affordable replacement for worn or failed ignition coils on compatible MTD, Troy-Bilt, Cub Cadet and Craftsman lawn tractors and rear-engine mowers. It suits DIY mechanics who want a direct-fit part that restores ignition performance without a full engine rebuild.\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 751-12220?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the Wetenex 951-12220 is a compatible replacement for 751-12220 and similar OEM numbers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will I need to adjust the air gap after installing?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: You should check and set the coil-to-flywheel air gap per your engine manual for reliable ignition.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Wetenex","offers":[{"title":"Default Title","offer_id":48084568211614,"sku":"B0DSVM4WG1","price":30.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/wetenex-ignition-coil-front-view.jpg?v=1785859874","url":"https:\/\/northtrailauto.ca\/products\/wetenex-ignition-coil-for-mtd-troy-bilt-craftsman-4p90-engines-951-12220-direct-fit-replacement","provider":"North Trail Auto","version":"1.0","type":"link"}