{"product_id":"newhow-outboard-ignition-coil-cdm-modules-3-pack-827509a10-4-pin-replacement-for-mercury-force-epoxy-sealed-coils","title":"NEWHOW Outboard Ignition Coil CDM Modules 3-Pack 827509A10 — 4‑Pin Replacement for Mercury\/Force, Epoxy‑Sealed Coils","description":"\u003cstrong\u003eNEWHOW 3-Pack Outboard Ignition Coil CDM Module 827509A10 is a set of three direct-replacement 4-pin capacitor-discharge ignition modules with integral coils designed for compatible Mercury\/Force outboard 2-stroke engines.\u003c\/strong\u003e\n\nThis three-pack supplies replacement 4-pin CDM units that match stamp 827509A10 and cross to common part numbers such as 827509A1\/A3\/A4\/A7\/A8\/A9\/T7 and CDI 114-7509. Each module contains an epoxy-sealed high-tension coil and one spark boot; the kit is intended to restore reliable spark across multiple cylinders on compatible 2-stroke engines and to prevent the cascade failure seen when aging CDMs begin to misfire.\n\n\u003ch3\u003eHow will these CDM modules restore multi-cylinder ignition performance?\u003c\/h3\u003e\n\nReplacing failing CDMs at once eliminates mixed-aged modules that cause staggered misfire symptoms and sudden stalls. New modules restore the capacitor-discharge output so each cylinder receives consistent high-voltage pulses and reduces intermittent dead-bank failures.\n\n\u003cul\u003e\n\u003cli\u003eReplaces faulty 4-pin CDMs that leak charge capacitors or have open SCR switches.\u003c\/li\u003e\n\u003cli\u003eRestores 35–40 kV spark potential across cylinders when properly grounded.\u003c\/li\u003e\n\u003cli\u003eStops intermittent misfires and sudden stalls above 3000 rpm linked to CDM failure.\u003c\/li\u003e\n\u003cli\u003eInclude three modules—enough for a 3-cylinder looper or as a partial set for 4-cylinder engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich engines and applications fit these 827509A10 modules?\u003c\/h3\u003e\n\nThese units are engineered for legacy 2-stroke Mercury\/Mariner and Force\/Chrysler outboards that use one CDM per cylinder. They fit a wide range of 30–300 HP two-stroke installations, especially 75\/90HP 3-cylinder loopers and many 100\/115HP 4-cylinder multi-CDM engines when ordered accordingly.\n\n\u003cul\u003e\n\u003cli\u003eCommonly used on Mercury\/Mariner 30–300 HP two-stroke engines.\u003c\/li\u003e\n\u003cli\u003eSuitable for Force\/Chrysler 40–120 HP with CDM per cylinder architecture.\u003c\/li\u003e\n\u003cli\u003eWorks with OptiMax 90–225 DFI and Sport Jet 90\/120\/175 where 4-pin CDMs are present.\u003c\/li\u003e\n\u003cli\u003eMatch old module stamp 827509A10 and confirm a 4-pin connector before purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat steps and precautions are critical when installing these CDMs?\u003c\/h3\u003e\n\nProper ground and correct mounting are essential: CDMs rely on the engine block for grounding, so paint or corrosion under the mounting pads will weaken spark. Remove the battery, sand mounting pads to bare metal, torque bolts to specification, and label boots to preserve cylinder order.\n\n\u003cul\u003e\n\u003cli\u003eDisconnect battery before starting; remove old modules (two 1\/4\" bolts each).\u003c\/li\u003e\n\u003cli\u003eSand all three mounting pads to bare metal for a clean ground path.\u003c\/li\u003e\n\u003cli\u003eTighten module bolts to about 35 in-lb and plug in the 4-pin connectors.\u003c\/li\u003e\n\u003cli\u003eReuse stop wires and stator leads; label spark boots to avoid cross-firing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I confirm these are the correct modules for my outboard?\u003c\/h3\u003e\n\nThis 3-Pack is the 4-pin epoxy-sealed CDM with an integral coil and single spark boot per module. It will not fit early 3-pin trigger units, later 6-pin EFI\/SmartCraft modules, stators, or trigger plates—verify pin count, epoxy block, and the 827509A10 stamp on your old unit.\n\n\u003cul\u003e\n\u003cli\u003ePhoto-check: stamp 827509A10, 4-pin connector, epoxy-sealed block with one boot.\u003c\/li\u003e\n\u003cli\u003eDo not install on 3-pin or 6-pin systems; incompatible with 4-stroke EFI electronics.\u003c\/li\u003e\n\u003cli\u003eBench test continuity: stop-wire should be open key-off, closed key-on if functional.\u003c\/li\u003e\n\u003c\/ul\u003e\n\nWho is this for?\n\nThis NEWHOW 3-Pack is aimed at marine technicians, DIY boat owners, and fleet mechanics who maintain two-stroke Mercury\/Force outboards that use one CDM per cylinder. Choose this kit if you need to replace multiple worn CDMs at once—especially for 75\/90HP 3-cylinder loopers—or if you want spare modules to prevent a return of progressive ignition failures. Confirm the 4-pin CDM configuration and the 827509A10 marking before ordering to ensure fit and compatibility.\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will these CDMs fit my 4-stroke EFI outboard?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. These are 4-pin CDMs for 2-stroke Mercury\/Force engines and are not compatible with 4-stroke EFI or 6-pin SmartCraft modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many cylinders does this 3-pack cover?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This pack covers a 3-cylinder looper. For 4-cylinder engines you may need an additional module or a separate 1-pack.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NEWHOW","offers":[{"title":"Default Title","offer_id":55170674721111,"sku":"B0C2P2R2TG","price":96.48,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/newhow-cdm-pack-front.jpg?v=1790432820","url":"https:\/\/britishgarage.co.uk\/products\/newhow-outboard-ignition-coil-cdm-modules-3-pack-827509a10-4-pin-replacement-for-mercury-force-epoxy-sealed-coils","provider":"British Garage","version":"1.0","type":"link"}