{"product_id":"cdi-114-7452a3-339-7452a3-switch-box-for-mercury-2-cylinder-18-20-25-35-40-hp","title":"CDI 114-7452A3 339-7452A3 Switch Box For Mercury 2 Cylinder 18 20 25 35 40 Hp","description":"\u003cp\u003eThis CDI 114-7452A3 339-7452A3 Switch Box is an ignition switch box compatible with for Mercury outboards and references part number(s) 114-7452A3, 339-7452A3, 18-5776, and 9-25101. \u003c\/p\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe CDI 114-7452A3 339-7452A3 Switch Box for Mercury 2 Cylinder outboards is a critical engine component designed to restore proper ignition system operation. By controlling the exact firing sequence and providing reliable high-energy CDI switching, this module ensures smooth engine acceleration and stable performance under challenging marine conditions. Built with marine-grade sealed electronics and insulated internal circuitry, it effectively handles high thermal demands while resisting vibration and humidity.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMarine-grade sealed electronic construction protects internal circuitry\u003c\/li\u003e\n\u003cli\u003eDesigned to maintain precise and stable spark sequencing\u003c\/li\u003e\n\u003cli\u003eVibration-resistant circuitry engineered for harsh outboard environments\u003c\/li\u003e\n\u003cli\u003eHigh-energy CDI ignition switching design enhances throttle response\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003efor Mercury 18 HP 2 Cylinder\u003c\/li\u003e\n\u003cli\u003efor Mercury 20 HP 2 Cylinder\u003c\/li\u003e\n\u003cli\u003efor Mercury 25 HP 2 Cylinder\u003c\/li\u003e\n\u003cli\u003efor Mercury 35 HP 2 Cylinder\u003c\/li\u003e\n\u003cli\u003efor Mercury 40 HP 2 Cylinder\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon Uses\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eReplacing a failing switch box causing intermittent spark or engine misfires\u003c\/li\u003e\n\u003cli\u003eResolving random cylinder firing issues and top-end RPM loss\u003c\/li\u003e\n\u003cli\u003eRestoring stable electrical operation to outboard ignition systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Switch Box\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e 114-7452A3, 339-7452A3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Number(s):\u003c\/strong\u003e 18-5776, 9-25101, 332-7452A2, 332-7452A3, 899883230\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand Compatibility:\u003c\/strong\u003e for Mercury\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Compatibility:\u003c\/strong\u003e 18HP, 20HP, 25HP, 35HP, 40HP 2-Cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment Type:\u003c\/strong\u003e Outboard Engine\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How do I ensure this switch box will fit my outboard engine? \u003cstrong\u003eA:\u003c\/strong\u003e You should verify your existing module's part number against the listed OEM and replacement references such as 339-7452A3 or 114-7452A3 before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e What are the common symptoms that indicate this part needs replacement? \u003cstrong\u003eA:\u003c\/strong\u003e Typical signs include an intermittent spark, unexpected engine drop-out, random cylinder misfires during acceleration, or a noticeable loss of top-end RPM.\u003c\/p\u003e\u003cem\u003eProduct appearance and specifications may vary slightly by batch. Compatibility may vary by serial number, model year, or existing part number. Verify fitment before purchase.\u003c\/em\u003e","brand":"Northline Parts","offers":[{"title":"Default Title","offer_id":43023680077895,"sku":"ZZ1F01175","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0681\/7123\/5399\/files\/116562551656-0.jpg?v=1785417590","url":"https:\/\/www.northlineparts.com\/products\/cdi-114-7452a3-339-7452a3-switch-box-for-mercury-2-cylinder-18-20-25-35-40-hp","provider":"Northline Parts","version":"1.0","type":"link"}