{"product_id":"sierra-18-5438-ignition-coil-for-mercury-marine-crusader-inboard-engines-hei-replaces-oem-37068","title":"Sierra Ignition Coil 18-5438 for Crusader 500 Bulldog, 575, and 800 SC V-8 Marine Engines","description":"\u003cp\u003eThe Sierra Ignition Coil, part number 18-5438, is a boat-specific ignition coil built for Crusader marine V-8 engines, including the 500 Bulldog 540\/V-8, 575 540\/V-8, and 800 SC 572\/V-8. It uses a bolt-on installation design with a male connector, allowing it to go in place of the original coil without modifying wiring or brackets. This coil is engineered for marine ignition systems rather than automotive use, matching the electrical demands of Crusader engine setups across the listed serial number ranges. Because engine coverage on these Crusader blocks is tied to specific production serial number ranges rather than a single universal model year, confirming your engine's serial number against the ranges below ensures you order the correct coil. The 18-5438 weighs 0.71 pounds and carries UPC 030999319364 for easy cross-checking against your existing part. It ships as a single ignition coil unit ready for direct installation on qualifying Crusader engines.\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 18-5438\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition Coil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999319364\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.71 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Service Type:\u003c\/strong\u003e Boat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Gender:\u003c\/strong\u003e Male\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Type:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Compatibility:\u003c\/strong\u003e Crusader 500 Bulldog 540\/V-8, 575 540\/V-8, 800 SC 572\/V-8\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCrusader 500 Bulldog 540\/V-8, 1990-2001, serial number range C577003 to M050281\u003c\/li\u003e\n\u003cli\u003eCrusader 575 540\/V-8, 1986-1992, serial number range A677429 to D763716\u003c\/li\u003e\n\u003cli\u003eCrusader 800 SC 572\/V-8, 1993-1998, serial number D763836 and up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003eNo additional OEM cross-reference numbers are listed for this coil; order by Sierra part number 18-5438 to ensure correct fit.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-5438 ignition coil fit?\u003c\/strong\u003e The Sierra 18-5438 fits Crusader 500 Bulldog 540\/V-8 (1990-2001), Crusader 575 540\/V-8 (1986-1992), and Crusader 800 SC 572\/V-8 (1993-1998) marine engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this coil made for automotive or marine use?\u003c\/strong\u003e Boat is the listed vehicle service type for the 18-5438, meaning it is built specifically for marine ignition systems rather than automotive applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat kind of electrical connector does the 18-5438 use?\u003c\/strong\u003e A male connector is used on the Sierra 18-5438 ignition coil.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5438 require any modification to install?\u003c\/strong\u003e No modification is needed; the 18-5438 uses a bolt-on installation type that goes in place of the original coil.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-5438 ignition coil weigh?\u003c\/strong\u003e The 18-5438 weighs 0.71 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-5438?\u003c\/strong\u003e The UPC for the Sierra 18-5438 ignition coil is 030999319364.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat serial number range applies to the 800 SC 572\/V-8 fitment?\u003c\/strong\u003e On the Crusader 800 SC 572\/V-8, the 18-5438 covers engines with serial number D763836 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat serial number range applies to the 500 Bulldog 540\/V-8 fitment?\u003c\/strong\u003e For the Crusader 500 Bulldog 540\/V-8, the 18-5438 covers the serial number range C577003 through M050281.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat serial number range applies to the 575 540\/V-8 fitment?\u003c\/strong\u003e On the Crusader 575 540\/V-8, the 18-5438 covers the serial number range A677429 through D763716.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5438 replace other coil part numbers?\u003c\/strong\u003e No separate cross-reference numbers are listed for this coil; use Sierra part number 18-5438 directly to confirm correct fit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-5438 fit Mercury-branded engines as well as Crusader?\u003c\/strong\u003e The 18-5438 is listed as fitting both Crusader and Mercury marine engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of product is the 18-5438?\u003c\/strong\u003e The 18-5438 is an ignition coil, sold as a single unit.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988217344219,"sku":"SIE-18-5438","price":55.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-5438__15760.1737893631.500.750.jpg?v=1785189076","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-5438-ignition-coil-for-mercury-marine-crusader-inboard-engines-hei-replaces-oem-37068","provider":"Good Vibes Marina","version":"1.0","type":"link"}