{"product_id":"sierra-18-8804-1-marine-ignition-wire-set-replaces-mercury-84-813720a2-fits-mercruiser-thunderbolt-v8-8-cyl-sterndrive-inboard","title":"Sierra Ignition Wire Set 18-8804-1 for MerCruiser 260 350 MAG and 300 320 EFI 350 V-8 Electronic Distributor","description":"\u003cp\u003eThe Sierra 18-8804-1 is an ignition wire set built for MerCruiser stern drive and inboard V-8 engines equipped with a standard-rotation electronic distributor. It supplies the coil lead and spark plug leads needed to deliver a reliable spark path from the distributor to each cylinder, and it is designed for electronic distributor ignition systems, excluding Thunderbolt ignition setups. The set includes one coil lead measuring 12 inches along with spark plug leads in four lengths (30, 35, 40, and 45 inches) so each cylinder position gets a properly sized lead rather than a one-size-fits-all wire. Leads use lead-based conductor construction typical of marine ignition wiring for consistent conductivity and resistance to the vibration and heat found in an engine compartment.\u003c\/p\u003e\u003cp\u003eThis wire set fits MerCruiser 260 and 350 MAG V-8 engines built in the 1982-1994 model years within serial number range 6218462 through F600999, as well as MerCruiser 300 and 320 EFI 350\/V-8 engines built in the 1985-1989 model years within serial number range A543604 through C622418. Confirm your engine model and serial number against these ranges before ordering, since ignition wiring is engine-specific and the wrong set will not seat or route correctly.\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 18-8804-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Ignition wire set (wiring and plug set)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Compatibility:\u003c\/strong\u003e Electronic distributor, standard rotation, excluding Thunderbolt ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil Lead Length:\u003c\/strong\u003e 12 inches (1 lead)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpark Plug Lead Lengths:\u003c\/strong\u003e 30 inches, 35 inches, 40 inches, 45 inches (2 leads each length)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Lead\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 2.75 x 7.12 x 10.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.94 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 260, 350 MAG V-8, 1982-1994, serial number range 6218462 - F600999\u003c\/li\u003e\n\u003cli\u003eMerCruiser 300, 320 EFI 350\/V-8, 1985-1989, serial number range A543604 - C622418\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-8804-1 ignition wire set fit?\u003c\/strong\u003e This wire set fits MerCruiser 260 and 350 MAG V-8 engines from the 1982-1994 model years within serial number range 6218462 through F600999, and MerCruiser 300 and 320 EFI 350\/V-8 engines from the 1985-1989 model years within serial number range A543604 through C622418.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill 18-8804-1 work with a Thunderbolt ignition system?\u003c\/strong\u003e No. The Sierra 18-8804-1 is built for standard-rotation electronic distributor ignition and specifically excludes Thunderbolt ignition systems, so it should not be used on engines with Thunderbolt ignition.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many spark plug leads come in this set, and how long are they?\u003c\/strong\u003e The 18-8804-1 set includes spark plug leads in four lengths: 30 inches, 35 inches, 40 inches, and 45 inches, with two leads supplied at each length to cover a V-8 cylinder layout.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the kit include a coil lead?\u003c\/strong\u003e Yes, the Sierra 18-8804-1 includes one coil lead measuring 12 inches in addition to the spark plug leads.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material are the ignition leads made of?\u003c\/strong\u003e The leads in the 18-8804-1 wire set use lead-based conductor construction, which is standard for marine ignition wiring exposed to engine heat and vibration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-8804-1 wire set weigh?\u003c\/strong\u003e The Sierra 18-8804-1 ignition wire set weighs 1.94 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the packaged dimensions of this ignition wire set?\u003c\/strong\u003e The Sierra 18-8804-1 measures 2.75 x 7.12 x 10.5 inches as packaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my MerCruiser engine is in the right serial number range for this part?\u003c\/strong\u003e Check your engine's serial number tag against the ranges listed for the 18-8804-1: 6218462 through F600999 for the 260\/350 MAG V-8, or A543604 through C622418 for the 300\/320 EFI 350\/V-8. If your serial number falls outside both ranges, this part is not the correct match.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a full ignition wire set or just replacement plug wires?\u003c\/strong\u003e The 18-8804-1 is a complete wiring and plug lead set, including both the coil lead and the full set of spark plug leads needed for the engine, not a single replacement wire.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this wire set be used on engines outside the listed serial number ranges?\u003c\/strong\u003e Fitment for the Sierra 18-8804-1 is defined by the specific engine models and serial number ranges listed, so it should only be used on MerCruiser 260\/350 MAG or 300\/320 EFI 350\/V-8 engines that fall within those ranges.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988434694363,"sku":"SIE-18-8804-1","price":62.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__17345.1772450817.500.750.jpg?v=1785188720","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-8804-1-marine-ignition-wire-set-replaces-mercury-84-813720a2-fits-mercruiser-thunderbolt-v8-8-cyl-sterndrive-inboard","provider":"Good Vibes Marina","version":"1.0","type":"link"}