{"product_id":"bbtv-2m4720-engine-piston-ring","title":"BBTV 2M4720 Engine Piston Ring","description":"\u003ch2\u003eEngine piston ring set for 4.0L bores\u003c\/h2\u003e\u003cp\u003eThis engine piston ring set is built for 4.000-inch, standard-bore applications and uses a plasma moly top ring for wear resistance. It is a fitment-based replacement for select Chevrolet, GMC, and Oldsmobile V6 applications, including Chevrolet Astro and GMC Safari models.\u003c\/p\u003e\u003ch2\u003eKey features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStandard bore sizing for 4.000-inch cylinder bores\u003c\/li\u003e\n\u003cli\u003ePlasma moly top ring surface for improved ring face durability\u003c\/li\u003e\n\u003cli\u003eSteel top ring construction for strength under combustion load\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 with chrome treatment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed description\u003c\/h2\u003e\u003cp\u003ePart number 2M4720 is an engine piston ring set engineered around a 4.000-inch bore and standard oversize specification. The ring package uses a plasma moly top ring, a grey iron second ring, and a steel rail\/stainless expander oil ring arrangement to support cylinder sealing and oil control in compatible V6 engines. This part number 2M4720 is listed for 1992-1995 Chevrolet Astro, 1992-1995 GMC Safari, and other select Chevrolet and GMC truck and SUV applications, with fitment also covering 1995 Chevrolet Blazer and 1992-1994 Oldsmobile Bravada.\u003c\/p\u003e\u003ch2\u003eWhat it is used for\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestoring cylinder compression in worn engine bores\u003c\/li\u003e\n\u003cli\u003eAddressing oil consumption caused by worn ring sealing\u003c\/li\u003e\n\u003cli\u003eReplacing damaged or heat-worn piston rings during engine service\u003c\/li\u003e\n\u003cli\u003eSupporting proper combustion sealing in compatible V6 engines\u003c\/li\u003e\n\u003cli\u003eCorrecting blow-by related to ring wear or loss of tension\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation notes and tips\u003c\/h2\u003e\u003cp\u003eVerify bore size, ring groove dimensions, and engine configuration before installation. Clean piston ring grooves thoroughly and confirm end gap and side clearance against service specifications. This part cross-references Monroe Shocks \u0026amp; Struts (e.g., E627K) for the same application.\u003c\/p\u003e","brand":"BBTV","offers":[{"title":"Default Title","offer_id":53669304336565,"sku":"BBTV-2M4720","price":62.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/HA_2M4720_Fro.jpg?v=1793686601","url":"https:\/\/www.partcatalog.com\/products\/bbtv-2m4720-engine-piston-ring","provider":"PartCatalog","version":"1.0","type":"link"}