{"product_id":"sierra-18-5438-ignition-coil-replaces-300-8m0079202","title":"Sierra Ignition Coil - SIE-18-5438","description":"\u003cp\u003eSierra 18-5438 Ignition Coil for Thunderbolt MerCruiser \u0026amp; Crusader Ignitions\u003c\/p\u003e\u003cp\u003eSierra replacement ignition coil. All Sierra aftermarket parts are manufactured to meet or exceed OEM requirements.\u003c\/p\u003e\u003cp\u003eFits:\u003c\/p\u003e\u003cp\u003eGM V-6 \u0026amp; V-8 Engines With HEI Thunderbolt IV \u0026amp; V Ignition\u003c\/p\u003e\u003cp\u003eFeatures:\u003c\/p\u003e\u003cp\u003ePrimary Resistance: 1.0±15 ohms\u003c\/p\u003e\u003cp\u003eSecondary Resistance: 8K±20 ohms\u003c\/p\u003e\u003cp\u003eShape: Cannister\u003c\/p\u003e\u003cp\u003eInput Voltage: 14+0.5V\u003c\/p\u003e\u003cp\u003eOutput Voltage: MIN16.5KV\u003c\/p\u003e\u003cp\u003ePrimary Resistance Tolerance: +15%\u003c\/p\u003e\u003cp\u003eSecondary Resistance Tolerance: +15%\u003c\/p\u003e\u003cp\u003ePrimary Inductance: 7.85mH+20%\u003c\/p\u003e\u003cp\u003eSecondary Inductance: 36.8H+20%\u003c\/p\u003e\u003cp\u003eInterchangeable with:\u003c\/p\u003e\u003cp\u003eCDI\u003c\/p\u003e\u003cp\u003eE18-0008\u003c\/p\u003e\u003cp\u003eCrusader\u003c\/p\u003e\u003cp\u003e37068\u003c\/p\u003e\u003cp\u003eMallory\u003c\/p\u003e\u003cp\u003e9-29701\u003c\/p\u003e\u003cp\u003eMerCruiser Stern Drive\u003c\/p\u003e\u003cp\u003e300-8M0079202\u003c\/p\u003e\u003cp\u003e392-7803\u003c\/p\u003e\u003cp\u003e392-7803A4\u003c\/p\u003e\u003cp\u003e392-805570A1\u003c\/p\u003e\u003cp\u003e392-805570A2\u003c\/p\u003e\u003cp\u003eFrequently Asked Questions\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eWhat is the Sierra 18-5438 Ignition Coil used for? The Sierra 18-5438 Ignition Coil is a replacement coil for GM V-6 and V-8 marine engines equipped with HEI Thunderbolt IV or V ignition systems. It is manufactured by Sierra to meet or exceed OEM requirements and is designed for the ignition applications specified in the product description.\u003c\/li\u003e\n\u003cli\u003eWhich engines does the Sierra 18-5438 Ignition Coil fit? The Sierra 18-5438 fits GM V-6 and V-8 engines with HEI Thunderbolt IV and V ignition. The product description does not provide specific engine model years or serial-number ranges, so verify that your engine uses the specified HEI Thunderbolt IV or V ignition system before ordering.\u003c\/li\u003e\n\u003cli\u003eWhat are the resistance specifications for the Sierra 18-5438 Ignition Coil? The Sierra 18-5438 has a listed primary resistance of 1.0±15 ohms and secondary resistance of 8K±20 ohms. The product description also lists primary inductance of 7.85mH+20% and secondary inductance of 36.8H+20% as part of the coil's specifications.\u003c\/li\u003e\n\u003cli\u003eWhat are the voltage specifications for the Sierra 18-5438 Ignition Coil? The Sierra 18-5438 has an input voltage specification of 14+0.5V and a minimum output voltage of 16.5KV. These specifications are provided for the replacement ignition coil used with GM V-6 and V-8 engines equipped with HEI Thunderbolt IV and V ignition.\u003c\/li\u003e\n\u003cli\u003eWhat type of ignition coil is the Sierra 18-5438? The Sierra 18-5438 is a cannister-shaped replacement ignition coil. Its listed specifications include primary resistance of 1.0±15 ohms, secondary resistance of 8K±20 ohms, primary inductance of 7.85mH+20%, and secondary inductance of 36.8H+20%.\u003c\/li\u003e\n\u003cli\u003eWhat ignition coil part numbers is the Sierra 18-5438 interchangeable with? The Sierra 18-5438 is interchangeable with CDI E18-0008, Crusader 37068, and Mallory 9-29701. Listed MerCruiser Stern Drive interchange numbers include 300-8M0079202, 392-7803, 392-7803A4, 392-805570A1, and 392-805570A2. Verify your existing part number and ignition system before replacement.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":50582497919234,"sku":"SIE-18-5438","price":78.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/3024\/2562\/files\/18-5438__15760.1737893631_5f762a55-e832-411f-8d10-450d84f474e0.jpg?v=1791082034","url":"https:\/\/allmarineworld.com\/products\/sierra-18-5438-ignition-coil-replaces-300-8m0079202","provider":"All Marine World","version":"1.0","type":"link"}