{"product_id":"393-9459q1-mercruiser-393-9459q1-4cylinder-distributor-cap-replacement","title":"393-9459Q1 Aftermarket Mercruiser 4-Cylinder Distributor Cap | Sawley's Select Marine Parts","description":"\u003cp\u003e\n 🔧 Product Description\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Aftermarket replacement Four-Cylinder Delco Distributor Cap - Replaces Part Number: 393-9459Q1\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n New aftermarket conventional Delco distributor cap replacing MerCruiser 393-9459Q1 for early GM four-cylinder marine engines.\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 • Four-cylinder conventional Delco cap\n\u003c\/p\u003e\n\u003cp\u003e\n • Supports 2.5L, 3.0L and 3.7L MerCruiser engines\n\u003c\/p\u003e\n\u003cp\u003e\n • Marine-grade corrosion-resistant terminals\n\u003c\/p\u003e\n\u003cp\u003e\n • Cross-references early OMC and Mercury cap numbers\n\u003c\/p\u003e\n\u003cp\u003e\n • Not interchangeable with later 811635T3 Delco EST cap\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🧰 Kit \/ Assembly Contents\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 1 × Four-cylinder distributor cap - Part Number: 393-9459Q1\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 • 393-9459Q1 → Supersedes\/cross-references 393-9459, 393-9549T and 33667\n\u003c\/p\u003e\n\u003cp\u003e\n • FI6900052 and OMC 380541 (cross-brand related references)\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 • 393-9459\n\u003c\/p\u003e\n\u003cp\u003e\n • 393-9549T\n\u003c\/p\u003e\n\u003cp\u003e\n • 33667\n\u003c\/p\u003e\n\u003cp\u003e\n • FI6900052\n\u003c\/p\u003e\n\u003cp\u003e\n • 380541\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 • Sierra: 18-5385\n\u003c\/p\u003e\n\u003cp\u003e\n • GLM: 71540\n\u003c\/p\u003e\n\u003cp\u003e\n • Mallory: 9-29401\n\u003c\/p\u003e\n\u003cp\u003e\n • CDI Electronics: E64-0002\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 • Early MerCruiser GM four-cylinder distributor 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 \/ Equipment models:\n\u003c\/p\u003e\n\u003cp\u003e\n • 2.5L\/120HP GM four-cylinder\n\u003c\/p\u003e\n\u003cp\u003e\n • 3.0L\/140HP GM four-cylinder\n\u003c\/p\u003e\n\u003cp\u003e\n • 3.7L\/470-family four-cylinder applications using the conventional Delco cap\n\u003c\/p\u003e\n\u003cp\u003e\n • HP \/ Output Range: Approximately 120HP - 190HP\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine \/ System Type: GM inline four-cylinder petrol marine engine with conventional distributor\n\u003c\/p\u003e\n\u003cp\u003e\n • Year Range: Approximately 1963 - 1989, depending on engine family\n\u003c\/p\u003e\n\u003cp\u003e\n • Serial \/ Component Identification: Confirm conventional Delco cap shape; later EST distributors use 811635T3.\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 distributor cap contains the high-voltage terminals that route ignition-coil output to the correct spark-plug lead. It also insulates the terminals and rotor path from moisture, salt and arcing.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Common signs of failure \/ service requirement:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Crossfire, backfiring or random-cylinder misfire\n\u003c\/p\u003e\n\u003cp\u003e\n • Hard starting in damp or humid conditions\n\u003c\/p\u003e\n\u003cp\u003e\n • Carbon tracking, burnt terminals or internal arcing\n\u003c\/p\u003e\n\u003cp\u003e\n • Cracks, corrosion or green deposits inside the cap\n\u003c\/p\u003e\n\u003cp\u003e\n • Rough idle and loss of power under acceleration\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 • New aftermarket replacement part\n\u003c\/p\u003e\n\u003cp\u003e\n • Brand new\n\u003c\/p\u003e\n\u003cp\u003e\n • Supplied in original or equivalent packaging\n\u003c\/p\u003e\n","brand":"Sawley's Select Marine Parts","offers":[{"title":"Default Title","offer_id":53404730097956,"sku":"J764437","price":38.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_aa4c3c3c-6660-4a5f-8cce-ad166396aea5.jpg?v=1788093680","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/393-9459q1-mercruiser-393-9459q1-4cylinder-distributor-cap-replacement","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}