{"product_id":"arco-dr001-mercruiser-volvo-rotor-57-dr001","title":"Arco DR001 Distributor Rotor – MerCruiser \/ Volvo Penta \/ OMC GM Module-in-Cap","description":"\u003ch2\u003eArco DR001 Distributor Rotor – GM Module-in-Cap \/ Delco HEI Ignition\u003c\/h2\u003e\u003cp\u003eReplace the distributor rotor in your GM-style Module-in-Cap ignition system with this genuine Arco OEM-replacement rotor. The DR001 is the correct rotor for MerCruiser, Volvo Penta, and OMC stern drive engines equipped with the newer GM-style “Module in Cap” distributor — where the ignition control module is integrated into the cap itself. The rotor transfers high-voltage spark from the ignition coil to each spark plug wire terminal in sequence; a worn or cracked rotor causes misfires, rough idle, and hard starting.\u003c\/p\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser V6 and V8 engines with GM-style Module-in-Cap \/ Delco HEI distributors\u003c\/li\u003e\n\u003cli\u003eVolvo Penta inboard engines with GM-style Module-in-Cap distributors (replaces OEM 3854311)\u003c\/li\u003e\n\u003cli\u003eOMC Stern Drive engines with GM-style Module-in-Cap distributors (replaces OEM 3854311, 0769694)\u003c\/li\u003e\n\u003cli\u003ePairs with the \u003ca href=\"\/products\/arco-dc006-mercruiser-volvo-omc-distributor-cap-57-dc006\"\u003eArco DC006 Cap\u003c\/a\u003e (V6 applications) and the \u003ca href=\"\/products\/arco-dc007-mercruiser-distributor-cap-57-dc007\"\u003eArco DC007 Cap\u003c\/a\u003e (V8 non-MPI applications)\u003c\/li\u003e\n\u003cli\u003eVerify fitment by engine model and serial number before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM Cross-Reference\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMerCruiser:\u003c\/strong\u003e 804424, 850485, 8504851, 898253012, 8M0062084\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolvo Penta:\u003c\/strong\u003e 3854311\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOMC Stern Drive:\u003c\/strong\u003e 3854311, 0769694\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSierra:\u003c\/strong\u003e 18-5408\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 57-DR001\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e GM-style Module-in-Cap \/ Delco HEI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eComplete Your Ignition Service\u003c\/h3\u003e\u003cp\u003eAlways replace the rotor and distributor cap together — they wear as a pair and should be serviced at the same time. Match your cap by engine configuration:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/arco-dc006-mercruiser-volvo-omc-distributor-cap-57-dc006\"\u003eArco DC006 Distributor Cap\u003c\/a\u003e — V6 Module-in-Cap applications (MerCruiser, Volvo Penta, OMC)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/arco-dc007-mercruiser-distributor-cap-57-dc007\"\u003eArco DC007 Distributor Cap\u003c\/a\u003e — V8 Module-in-Cap applications (non-MPI)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eLooking for an alternate brand rotor? See the \u003ca href=\"\/products\/sierra-ignition-rotor-ap-3065-sie-18-5408\"\u003eSierra Ignition Rotor – 18-5408\u003c\/a\u003e. Browse our full \u003ca href=\"\/collections\/ignition-components\"\u003eIgnition Components\u003c\/a\u003e collection for spark plugs, wire sets, and more.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eThe DR001 is the rotor for GM Module-in-Cap distributors — the style where the ignition module is built into the cap, not mounted separately on the distributor body. It pairs with the DC006 (V6) or DC007 (V8 non-MPI) caps. The most common mistake is ordering a rotor without confirming the distributor style: MerCruiser V6 and V8 engines used several different distributor configurations across model years, and the wrong rotor will not seat correctly or make proper contact with the cap terminals. Always replace the cap and rotor together — a new rotor on a worn cap (or vice versa) will not restore full ignition performance.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51250812059684,"sku":"57-DR001","price":17.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/57-DR001.jpg?v=1786510580","url":"https:\/\/marisolmarine.com\/products\/arco-dr001-mercruiser-volvo-rotor-57-dr001","provider":"Marisol Marine Company","version":"1.0","type":"link"}