{"product_id":"bbtv-2c5219-engine-piston-ring","title":"BBTV 2C5219 Engine Piston Ring","description":"\u003ch2\u003eEngine Piston Ring for Subaru Applications\u003c\/h2\u003e\u003cp\u003eThis engine piston ring is built for Subaru flat-four applications that require standard bore sizing and chrome-treated ring surfaces. It is a direct-fit engine component for select WRX, WRX STI, Impreza, Forester, Legacy, Outback, and Baja models.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStandard bore size: 99.50 mm \/ 3.917 in.\u003c\/li\u003e\n\u003cli\u003eChrome-treated top ring surface for wear resistance.\u003c\/li\u003e\n\u003cli\u003eSteel top ring construction for consistent sealing performance.\u003c\/li\u003e\n\u003cli\u003eGrey iron second ring with phosphate surface treatment.\u003c\/li\u003e\n\u003cli\u003eSteel rail and stainless expander oil ring design.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003ePart number 2C5219 is an engine piston ring set specification for Subaru engines with a 99.50 mm standard bore. The ring package uses a steel top ring with chrome surface treatment, a grey iron second ring with phosphate treatment, and a steel rail\/stainless expander oil ring arrangement. These material and finish choices are used to support cylinder sealing, oil control, and stable ring operation under engine load. Part number 2C5219 also cross-references E1025KC for the same application.\u003c\/p\u003e\u003cp\u003eCompatible With Subaru WRX STI, Subaru WRX, Subaru Impreza, Subaru Forester, Subaru Legacy, Subaru Outback, and Subaru Baja applications listed in the fitment data. Fits 2016 Subaru WRX STI, N\/A; Fits 2014 Subaru WRX STI, N\/A; Fits 2014-2015 Subaru WRX, N\/A; Fits 2004-2014 Subaru Impreza, N\/A; Fits 2004-2013 Subaru Forester, N\/A; Fits 2005-2012 Subaru Legacy, N\/A; Fits 2005-2009 Subaru Outback, N\/A; Fits 2004-2006 Subaru Baja, N\/A.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestoring cylinder compression when ring wear has reduced sealing.\u003c\/li\u003e\n\u003cli\u003eReducing oil consumption caused by worn oil control rings.\u003c\/li\u003e\n\u003cli\u003eAddressing blow-by from tired piston ring sealing surfaces.\u003c\/li\u003e\n\u003cli\u003eReplacing damaged or heat-affected piston rings during engine service.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify bore size, ring groove dimensions, and engine application before installation. Clean the piston ring grooves thoroughly and confirm ring end gaps against service specifications during assembly. Follow the engine builder’s procedures for ring orientation and break-in.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eThis part is specified with standard bore dimensions and application data for Subaru engine service. Part number 2C5219 cross-references E1025KC for the same application.\u003c\/p\u003e","brand":"BBTV","offers":[{"title":"Default Title","offer_id":53669302829237,"sku":"BBTV-2C5219","price":43.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/HA_2C5219_Fro.jpg?v=1793686431","url":"https:\/\/www.partcatalog.com\/products\/bbtv-2c5219-engine-piston-ring","provider":"PartCatalog","version":"1.0","type":"link"}