{"product_id":"sierra-18-5407-marine-ignition-rotor-replaces-mercruiser-392-6326-omc-980892-fits-prestolite-8-cylinder-distributors","title":"Sierra 18-5407 Marine Distributor Rotor for Prestolite 8-Cylinder Ignition, Replaces 392-6326","description":"\u003cp\u003eThe Sierra 18-5407 is a marine distributor rotor engineered for Prestolite 8-cylinder ignition systems. It is the rotor component of the Sierra 18-5250 tune-up kit, which also includes a matching contact set (18-5303) and condenser (18-5345), so it is built to work as part of a complete ignition service rather than as a standalone guess-fit part. The rotor features a machined exterior finish for accurate, repeatable contact within the distributor cap, helping maintain correct spark timing and distribution to each cylinder.\u003c\/p\u003e\u003cp\u003eThis rotor is a direct fit for engines using a Prestolite 8-cylinder distributor and cross-references to a wide range of OEM and aftermarket part numbers used across Chrysler Inboard, Crusader, Mercury Marine\/Mercruiser, OMC, and Pleasurecraft applications, making it a practical replacement when the original part number is hard to find. Sierra manufactures the part to meet or exceed original equipment quality standards, using marine-grade materials suited to the moisture and vibration a boat engine compartment sees. Because ignition timing accuracy depends on a properly seated, correctly sized rotor, installers should confirm the part number against the distributor being serviced before installing.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5407\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDescription:\u003c\/strong\u003e Rotor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistributor Type:\u003c\/strong\u003e Prestolite 8 cyl.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTune-Up Kit Component Of:\u003c\/strong\u003e 18-5250\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 1.06 x 4 x 5.12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999319197\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eEngines equipped with a Prestolite 8-cylinder distributor\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCDI E65-0011\u003c\/li\u003e\n\u003cli\u003eChrysler Inboard 1658535\u003c\/li\u003e\n\u003cli\u003eCrusader 41059\u003c\/li\u003e\n\u003cli\u003eGLM 71050\u003c\/li\u003e\n\u003cli\u003eMallory 9-29201\u003c\/li\u003e\n\u003cli\u003eMercruiser Stern Drive 392-6326\u003c\/li\u003e\n\u003cli\u003e392-6326T\u003c\/li\u003e\n\u003cli\u003eFI6900044\u003c\/li\u003e\n\u003cli\u003eOMC Inboard 980892\u003c\/li\u003e\n\u003cli\u003eOMC Stern Drive 980892\u003c\/li\u003e\n\u003cli\u003ePleasurecraft R103003\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5407 rotor fit?\u003c\/strong\u003e It is designed for engines that use a Prestolite 8-cylinder distributor, and it is the rotor included in the Sierra 18-5250 tune-up kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5407 the same as the OEM 392-6326 rotor?\u003c\/strong\u003e Yes, 392-6326 and 392-6326T are among the OEM numbers the 18-5407 rotor replaces, along with Chrysler Inboard 1658535, Crusader 41059, GLM 71050, Mallory 9-29201, FI6900044, OMC 980892, and Pleasurecraft R103003.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-5407 rotor made of, and how is it finished?\u003c\/strong\u003e The rotor has a machined exterior finish, giving it precise, repeatable contact inside the distributor cap for accurate spark distribution.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions and weight of this rotor?\u003c\/strong\u003e The Sierra 18-5407 measures 1.06 x 4 x 5.12 inches and weighs 0.05 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5407 come with a contact set and condenser?\u003c\/strong\u003e No, the rotor is sold on its own with part number 18-5407, but it is also the rotor component used in the Sierra 18-5250 tune-up kit alongside a separate contact set (18-5303) and condenser (18-5345).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this rotor work with a Delco distributor instead of a Prestolite one?\u003c\/strong\u003e The 18-5407 is built for Prestolite 8-cylinder distributors; a different rotor is used for Delco 4 and 6-cylinder distributor setups, so confirm your distributor type before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5407 a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e It is a genuine Sierra International part, manufactured to meet or exceed original equipment quality standards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my old rotor matches the 18-5407?\u003c\/strong\u003e Check your existing rotor or distributor for any of the cross-reference numbers this part replaces, including 392-6326, 1658535, 41059, 71050, 9-29201, 980892, or R103003; a match confirms the 18-5407 is the correct replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the distributor rotor on a marine engine?\u003c\/strong\u003e A rotor like the Sierra 18-5407 is typically replaced during a routine ignition tune-up alongside the contact set and condenser, since worn rotor contacts can cause misfires or hard starting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5407 rotor?\u003c\/strong\u003e The Sierra 18-5407 rotor carries UPC 030999319197.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988213412059,"sku":"SIE-18-5407","price":12.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5407_lg__47672.1558128418.500.750.jpg?v=1785187990","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-5407-marine-ignition-rotor-replaces-mercruiser-392-6326-omc-980892-fits-prestolite-8-cylinder-distributors","provider":"Good Vibes Marina","version":"1.0","type":"link"}