{"product_id":"ignition-coil-primary-wire-set-for-mercury-mariner-4-cylinder-outboards-sierra-18-99277","title":"Sierra Ignition Coil Primary Wire Set for Mercury Mariner 4-Cylinder Outboards - 18-99277","description":"\u003cp\u003eThe Sierra 18-99277 is a primary wire set designed for the ignition coils on Mercury Mariner 4-cylinder outboard engines. Primary wires carry low-voltage current from the ignition system to the coil, and a worn, cracked, or corroded primary wire can cause misfires, hard starting, or an inconsistent spark. This wire set is built to restore a reliable low-voltage connection at the coil, helping keep the ignition system firing correctly cylinder to cylinder.\u003c\/p\u003e\u003cp\u003eIt is manufactured for Mercury Mariner 4-cylinder outboard applications and is intended as a direct replacement for the factory primary wiring at the ignition coil. Replacing primary wires along with other ignition components is a straightforward way to rule out wiring as the source of an ignition-related running problem before assuming a coil or other ignition part has failed.\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 18-99277\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Ignition Coil Primary Wire Set - 4 Cyl.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Mercury Mariner outboard ignition coils, 4-cylinder engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.14375 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282395216\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits Mercury Mariner 4-cylinder outboard engines using this ignition coil primary wiring.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-99277 used for?\u003c\/strong\u003e The Sierra 18-99277 is a primary wire set for the ignition coils on Mercury Mariner 4-cylinder outboard engines, carrying low-voltage current from the ignition system to the coil.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this wire set fit a Mercury Mariner outboard with a 6-cylinder engine?\u003c\/strong\u003e No, the Sierra 18-99277 is built specifically for 4-cylinder Mercury Mariner outboard engines and is not intended for 6-cylinder applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-99277 wire set weigh?\u003c\/strong\u003e The Sierra 18-99277 ignition coil primary wire set weighs 0.14375 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the symptoms of a bad ignition coil primary wire?\u003c\/strong\u003e A failing primary wire on a Mercury Mariner ignition coil can cause misfires, hard starting, or inconsistent spark, since the wire carries the low-voltage current that triggers the coil.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-99277 a direct replacement for the factory primary wiring?\u003c\/strong\u003e Yes, the 18-99277 is manufactured as a replacement primary wire set for the ignition coils on Mercury Mariner 4-cylinder outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat brand makes part number 18-99277?\u003c\/strong\u003e Part number 18-99277 is manufactured by Sierra as an ignition coil primary wire set for 4-cylinder Mercury Mariner outboards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes replacing the primary wire set require replacing the ignition coil itself?\u003c\/strong\u003e No, the Sierra 18-99277 replaces only the primary wiring at the coil; it does not include the ignition coil itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan a bad primary wire be a cheaper fix than replacing the ignition coil?\u003c\/strong\u003e Checking and replacing the primary wire, such as the Sierra 18-99277, is a reasonable first step before replacing an ignition coil, since a damaged wire can mimic coil-failure symptoms on a Mercury Mariner outboard.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engine cylinder count is the 18-99277 designed for?\u003c\/strong\u003e The Sierra 18-99277 is designed specifically for 4-cylinder Mercury Mariner outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-99277 wire set?\u003c\/strong\u003e The UPC for the Sierra 18-99277 ignition coil primary wire set is 808282395216.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988440658139,"sku":"SIE-18-99277","price":31.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-934-8721_lg__17170.1558113645.500.750.jpg?v=1785329164","url":"https:\/\/www.goodvibesmarina.com\/products\/ignition-coil-primary-wire-set-for-mercury-mariner-4-cylinder-outboards-sierra-18-99277","provider":"Good Vibes Marina","version":"1.0","type":"link"}