{"product_id":"339-7452a3-mercury-switch-box-genuine-used-part","title":"339-7452A3 Mercury Switch Box | Genuine Used Part","description":"\u003cp\u003e\n 🔧 Product Description\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Genuine Mercury Switch Box \/ CDI Module - Part Number: 339-7452A3\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine Mercury switch box \/ CDI ignition module used on selected Mercury and Mariner two-cylinder two-stroke outboards. This capacitor discharge ignition pack controls spark triggering from the stator and trigger circuits to the ignition coils.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n ⚙️ Key Features\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine Mercury switch box \/ CDI module\n\u003c\/p\u003e\n\u003cp\u003e\n • Correct Mercury part number 339-7452A3\n\u003c\/p\u003e\n\u003cp\u003e\n • Used on selected 18HP, 20HP, 25HP, 35HP and 40HP two-cylinder Mercury \/ Mariner engines\n\u003c\/p\u003e\n\u003cp\u003e\n • Cross-references with CDI Electronics 114-7452A3\n\u003c\/p\u003e\n\u003cp\u003e\n • Also crosses with Sierra 18-5776 and Mallory 9-25101 style replacements\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM Supersession Chain:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 339-7452A3 Mercury switch box reference\n\u003c\/p\u003e\n\u003cp\u003e\n • 339-7452A2 earlier related Mercury switch box reference\n\u003c\/p\u003e\n\u003cp\u003e\n • 339-7452A1 earlier related Mercury switch box reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM \/ Related Numbers:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 339-7452A3\n\u003c\/p\u003e\n\u003cp\u003e\n • 3397452A3\n\u003c\/p\u003e\n\u003cp\u003e\n • 7452A3\n\u003c\/p\u003e\n\u003cp\u003e\n • 339-7452A2\n\u003c\/p\u003e\n\u003cp\u003e\n • 3397452A2\n\u003c\/p\u003e\n\u003cp\u003e\n • 7452A2\n\u003c\/p\u003e\n\u003cp\u003e\n • 339-7452A1\n\u003c\/p\u003e\n\u003cp\u003e\n • 3397452A1\n\u003c\/p\u003e\n\u003cp\u003e\n • 7452A1\n\u003c\/p\u003e\n\u003cp\u003e\n • 899883230\n\u003c\/p\u003e\n\u003cp\u003e\n • Switch box\n\u003c\/p\u003e\n\u003cp\u003e\n • CDI module\n\u003c\/p\u003e\n\u003cp\u003e\n • Capacitor discharge ignition pack\n\u003c\/p\u003e\n\u003cp\u003e\n • Ignition switch box\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Aftermarket \/ Verified Equivalents:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • CDI Electronics: 114-7452A3\n\u003c\/p\u003e\n\u003cp\u003e\n • Sierra: 18-5776\n\u003c\/p\u003e\n\u003cp\u003e\n • Mallory: 9-25101\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🚤 Compatibility\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Commonly used on:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury \/ Mariner two-cylinder two-stroke CDI ignition systems\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Typically suits:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine models:\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 18HP 2-cylinder two-stroke - 1980-1987\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 20HP 2-cylinder two-stroke - 1980-1987\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 25HP 2-cylinder two-stroke - 1980-1987\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 35HP 2-cylinder two-stroke - 1980-1987\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury 40HP 2-cylinder two-stroke - 1980-1987\n\u003c\/p\u003e\n\u003cp\u003e\n • Mariner 18HP 2-cylinder two-stroke - 1980-1987\n\u003c\/p\u003e\n\u003cp\u003e\n • Mariner 20HP 2-cylinder two-stroke - 1980-1987\n\u003c\/p\u003e\n\u003cp\u003e\n • Mariner 25HP 2-cylinder two-stroke - 1980-1987\n\u003c\/p\u003e\n\u003cp\u003e\n • Mariner 35HP 2-cylinder two-stroke - 1980-1987\n\u003c\/p\u003e\n\u003cp\u003e\n • Mariner 40HP 2-cylinder two-stroke - 1980-1987\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • HP Range: 18HP - 40HP\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine Type: Mercury \/ Mariner two-cylinder two-stroke outboard CDI ignition system\n\u003c\/p\u003e\n\u003cp\u003e\n • Year Range: approximately 1980 - 1987\n\u003c\/p\u003e\n\u003cp\u003e\n • Serial Note: Match by exact Mercury \/ Mariner serial number, original switch-box number, wiring colours, connector style and ignition-system diagram before installation.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔌 Function\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n The switch box receives stator and trigger inputs, stores ignition energy and fires the ignition coils at the correct timing point.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Common signs of failure:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • No spark on one or both cylinders\n\u003c\/p\u003e\n\u003cp\u003e\n • Weak or intermittent spark\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine starts then loses spark\n\u003c\/p\u003e\n\u003cp\u003e\n • Misfire under load\n\u003c\/p\u003e\n\u003cp\u003e\n • Heat-related ignition failure\n\u003c\/p\u003e\n\u003cp\u003e\n • Kill circuit or stop wire fault damaging the module\n\u003c\/p\u003e\n\u003cp\u003e\n • Spark returns when a known-good switch box is fitted\n\u003c\/p\u003e\n\u003cp\u003e\n • Burnt, cracked or corroded switch-box terminals\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 📦 Condition\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine used part\n\u003c\/p\u003e\n\u003cp\u003e\n • Removed from running engine where applicable\n\u003c\/p\u003e\n\u003cp\u003e\n • In good working condition unless otherwise stated\n\u003c\/p\u003e\n","brand":"Sawley's Auto and Marine","offers":[{"title":"Default Title","offer_id":53392255484196,"sku":"399383R","price":45.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_cb89ee22-f12f-4493-9675-838602c1b189.jpg?v=1777260867","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/339-7452a3-mercury-switch-box-genuine-used-part","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}