{"product_id":"switch-box-for-mercury-mariner-6-25-hp-2-cyl-outboards-1997-2006-replaces-855713a4-sierra-18-99222","title":"Sierra Switch Box 18-99222 for Mercury Mariner 2 Cylinder Outboards 6-25 HP 1997-2006, Replaces 855713A3 855713A4","description":"\u003cp\u003eThe Sierra 18-99222 switch box is an ignition control unit built to power the spark timing on 2 cylinder Mercury and Mariner outboards. It functions as the electronic switch box (ignition pack) that fires the coils in sequence, and it is designed as a direct replacement for the factory Mercury switch box on the covered engine range. Buyers replace this component when an outboard cranks but will not fire, runs on one cylinder, or shows an intermittent spark caused by a failing switch box.\u003c\/p\u003e\u003cp\u003eThis unit is built for the 2 cylinder Mercury\/Mariner outboard family rated 6, 8, 9.9, 10, 15, 20 and 25 HP, covering engines from 1997 through 2006. It is a plug-in style replacement, so it is installed by disconnecting the factory harness connector, mounting the new switch box in the same location, and reconnecting the existing wiring, with no rewiring or splicing needed on a correctly matched application. Always confirm the HP, cylinder count, and model year of your specific outboard against the fitment listed here before ordering, since Mercury used different switch boxes across its outboard lineup.\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 18-99222\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Switch Box\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.7 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282393892\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Count:\u003c\/strong\u003e 2 Cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower Range:\u003c\/strong\u003e 6, 8, 9.9, 10, 15, 20, 25 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Years:\u003c\/strong\u003e 1997-2006\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Service Type:\u003c\/strong\u003e Outboard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Type:\u003c\/strong\u003e Plug-In\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Gender:\u003c\/strong\u003e Female-to-Male\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 5 x 4 x 2 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury\/Mariner 2 cylinder outboards: 6, 8, 9.9, 10, 15, 20 and 25 HP, 1997-2006\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e855713A3\u003c\/li\u003e\n\u003cli\u003e855713A4\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-99222 switch box fit?\u003c\/strong\u003e It is built for 2 cylinder Mercury and Mariner outboards rated 6, 8, 9.9, 10, 15, 20 and 25 HP from 1997 through 2006.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-99222 a direct OEM replacement?\u003c\/strong\u003e Yes, Sierra part 18-99222 is a direct replacement switch box that crosses to OEM Mercury numbers 855713A3 and 855713A4.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the switch box weigh?\u003c\/strong\u003e The Sierra 18-99222 switch box weighs 0.7 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this work on a 3 or 4 cylinder outboard?\u003c\/strong\u003e No. The 18-99222 switch box is designed specifically for 2 cylinder Mercury\/Mariner outboards and is not intended for 3 or 4 cylinder engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat connector type does this switch box use?\u003c\/strong\u003e It uses a female-to-male connector and is a plug-in installation, so it connects directly into the existing outboard wiring harness.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to modify any wiring to install part 18-99222?\u003c\/strong\u003e No rewiring is needed on a correctly matched application. The switch box is a plug-in unit, so you unplug the old switch box and plug in the new one at the factory harness connector.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the switch box?\u003c\/strong\u003e The switch box measures approximately 5 x 4 x 2 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does 18-99222 replace?\u003c\/strong\u003e This switch box replaces Mercury OEM numbers 855713A3 and 855713A4.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat symptoms indicate the switch box needs to be replaced?\u003c\/strong\u003e A failing switch box on a 2 cylinder Mercury\/Mariner outboard can cause no-spark cranking, running on only one cylinder, or intermittent misfires; the 18-99222 switch box addresses these ignition failures.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the horsepower rating matter when ordering this part?\u003c\/strong\u003e Yes, confirm your outboard is one of the 6, 8, 9.9, 10, 15, 20 or 25 HP 2 cylinder models covered by the 18-99222 switch box, since Mercury used different switch boxes across its outboard range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this switch box also called an ignition pack?\u003c\/strong\u003e Yes, the 18-99222 is a switch box, also referred to as an ignition pack, that controls spark timing to the coils on 2 cylinder Mercury\/Mariner outboards.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988439216347,"sku":"SIE-18-99222","price":270.91,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/CDI-114-5713_lg__90556.1748358165.500.750.jpg?v=1785188667","url":"https:\/\/www.goodvibesmarina.com\/products\/switch-box-for-mercury-mariner-6-25-hp-2-cyl-outboards-1997-2006-replaces-855713a4-sierra-18-99222","provider":"Good Vibes Marina","version":"1.0","type":"link"}