{"product_id":"bbtv-2c4640-engine-piston-ring","title":"BBTV 2C4640 Engine Piston Ring","description":"\u003ch2\u003eEngine Piston Ring for Small-Displacement Engines\u003c\/h2\u003e\u003cp\u003eThis engine piston ring set is built for 75.00 mm bores and standard oversize applications. It is listed for a wide range of compact engines, including Honda Civic, Honda CRX, and Geo Tracker fitments, with part number 2C4640 used throughout the catalog.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStandard oversize configuration for 75.00 mm engine bores.\u003c\/li\u003e\n\u003cli\u003eChrome top ring surface for wear resistance.\u003c\/li\u003e\n\u003cli\u003eSteel top ring construction for stable 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 for oil control.\u003c\/li\u003e\n\u003cli\u003eFits 1988-1996 Honda Civic, N\/A; 1988-1991 Honda CRX, N\/A; and 1989-1996 Geo Tracker, N\/A.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003ePart number 2C4640 is an engine piston ring set for 4-cylinder applications with a 75.00 mm bore and standard sizing. The ring package uses a chrome-treated top ring, a phosphate-treated second ring, and a steel rail\/stainless expander oil ring arrangement to support cylinder sealing and oil management. This configuration is relevant for compact engines found in Honda Civic, Honda CRX, and Geo Tracker applications, where consistent ring sealing and oil control are critical to compression retention and combustion efficiency.\u003c\/p\u003e\u003cp\u003eThe ring materials and surface treatments are selected to match the demands of everyday street engines. The chrome top ring and steel construction provide a durable sealing surface, while the grey iron second ring and oil ring assembly help manage blow-by and oil film control. Part number 2C4640 also cross-references Airtex Fuel Pumps 41592 and 41618 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestoring compression loss caused by worn piston rings.\u003c\/li\u003e\n\u003cli\u003eReducing oil consumption from ring wear or poor oil control.\u003c\/li\u003e\n\u003cli\u003eAddressing blow-by from weakened cylinder sealing.\u003c\/li\u003e\n\u003cli\u003eReplacing rings during an engine rebuild or overhaul.\u003c\/li\u003e\n\u003cli\u003eCorrecting smoke, fouling, or low compression related to ring wear.\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 piston ring grooves thoroughly and inspect cylinder walls for taper, scoring, or out-of-round conditions. Proper ring end gap measurement and cylinder preparation are essential for correct sealing. Confirm the engine uses the listed 75.00 mm bore and standard oversize specification before assembly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003ePart number 2C4640 is cataloged with defined material and surface-treatment specifications for consistent rebuild selection. Review the fitment list carefully to confirm the exact Honda Civic, Honda CRX, or Geo Tracker application before ordering.\u003c\/p\u003e","brand":"BBTV","offers":[{"title":"Default Title","offer_id":53669302042805,"sku":"BBTV-2C4640","price":34.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/HA_2C4640_Fro.jpg?v=1793686252","url":"https:\/\/www.partcatalog.com\/products\/bbtv-2c4640-engine-piston-ring","provider":"PartCatalog","version":"1.0","type":"link"}