{"product_id":"sierra-18-8800-1-spark-plug-wire-set-for-chris-craft-engines-replaces-mercury-84-813720a5-omc-503748","title":"Sierra 18-8800-1 Spark Plug Wire Set, MerCruiser 110\/120\/140 I\/O, Replaces Mercury 84-813720A5, White","description":"\u003cp\u003eThe Sierra 18-8800-1 is a white spark plug wire set built for MerCruiser inboard\/outboard engines equipped with a contact-controlled distributor running standard rotation. This set is designed for the MerCruiser 110 and 120 (153 cid L4) and the MerCruiser 140 (181 cid L4), covering engines with the specific serial number ranges tied to those model years. It is not intended for MerCruiser engines equipped with Thunderbolt ignition systems.\u003c\/p\u003e\u003cp\u003eEach set carries 4 wires to match the 4-cylinder MerCruiser engines it is built for, delivering a reliable connection between the distributor and spark plugs for consistent ignition performance. The wires are rated for 12 volts DC, standard for marine ignition systems of this type. As a direct cross-reference to Mercury Marine, OMC, and Mallory OEM numbers, this set is a straightforward replacement when factory ignition wiring wears out or fails on a covered MerCruiser engine.\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 18-8800-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Pins:\u003c\/strong\u003e 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Voltage:\u003c\/strong\u003e 12 Volts (DC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.77 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282194307\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Type:\u003c\/strong\u003e Contact-controlled distributor, standard rotation, excludes Thunderbolt ignition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference:\u003c\/strong\u003e Mercury Marine 84-813720A5, 84-816761Q4; OMC 503748; Mallory 9-28020\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e MerCruiser 110, 120, 140 I\/O (153\/181 cid L4)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 110, 153 cid L4, 1963-1966, Serial Number 1537370-2044033\u003c\/li\u003e\n\u003cli\u003eMerCruiser 120, 153 cid L4, 1964-1986, Serial Number 1666601-B531853\u003c\/li\u003e\n\u003cli\u003eMerCruiser 140, 181 cid L4, 1968-1986, Serial Number 2508261-B450800\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 84-813720A5\u003c\/li\u003e\n\u003cli\u003eMercury Marine 84-816761Q4\u003c\/li\u003e\n\u003cli\u003eOMC 503748\u003c\/li\u003e\n\u003cli\u003eMallory 9-28020\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-8800-1 wire set fit?\u003c\/strong\u003e The 18-8800-1 fits MerCruiser 110 and 120 engines (153 cid L4) and the MerCruiser 140 (181 cid L4), each equipped with a contact-controlled distributor running standard rotation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this wire set work on a MerCruiser with Thunderbolt ignition?\u003c\/strong\u003e No. The 18-8800-1 excludes MerCruiser engines with Thunderbolt ignition systems; it is built for contact-controlled distributor setups only.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does 18-8800-1 cross-reference?\u003c\/strong\u003e It cross-references Mercury Marine 84-813720A5 and 84-816761Q4, OMC 503748, and Mallory 9-28020.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many wires come in the set?\u003c\/strong\u003e 4 wires, matching the 4-cylinder MerCruiser 110, 120, and 140 engines this set is designed for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color are the spark plug wires?\u003c\/strong\u003e The Sierra 18-8800-1 set is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the shipping weight of this part?\u003c\/strong\u003e The 18-8800-1 wire set weighs 0.77 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat years does the 18-8800-1 cover?\u003c\/strong\u003e Coverage is 1963-1966 for the MerCruiser 110, 1964-1986 for the MerCruiser 120, and 1968-1986 for the MerCruiser 140.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat voltage is the 18-8800-1 rated for?\u003c\/strong\u003e It is rated for 12 volts DC, standard for marine ignition wiring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-8800-1 an OEM or aftermarket part?\u003c\/strong\u003e It is a Sierra-manufactured replacement that cross-references directly to Mercury Marine, OMC, and Mallory OEM wire sets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for this part?\u003c\/strong\u003e The Sierra 18-8800-1 carries UPC 808282194307.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs there a difference in fitment between the 110\/120 and the 140?\u003c\/strong\u003e Yes. The MerCruiser 110 and 120 use a 153 cid L4 engine, while the MerCruiser 140 uses a 181 cid L4 engine; both are covered by the 18-8800-1 set.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988434399451,"sku":"SIE-18-8800-1","price":41.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__99880.1753840690.500.750.jpg?v=1785188097","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-8800-1-spark-plug-wire-set-for-chris-craft-engines-replaces-mercury-84-813720a5-omc-503748","provider":"Good Vibes Marina","version":"1.0","type":"link"}