{"product_id":"bbtv-4742-engine-piston-ring","title":"BBTV 4742 Engine Piston Ring","description":"\u003ch2\u003eEngine Piston Ring Overview\u003c\/h2\u003e\u003cp\u003eEngine piston ring 4742 is a standard-size ring set application for select Chevrolet and GMC V8 engines with a 3.736-inch bore. It is built around grey iron top and second rings, with a steel rail and stainless expander for the oil ring package.\u003c\/p\u003e\u003cp\u003eFits 1993-2002 Chevrolet and GMC applications listed below, with shallow oil groove configuration and phosphate-treated top and second rings for controlled wear characteristics.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number 4742 for standard bore service applications\u003c\/li\u003e\n\u003cli\u003e3.736-inch bore size, or 94.89 mm metric equivalent\u003c\/li\u003e\n\u003cli\u003eGrey iron top ring and second ring construction\u003c\/li\u003e\n\u003cli\u003eSteel rail and stainless expander oil ring design\u003c\/li\u003e\n\u003cli\u003ePhosphate surface treatment on the top and second rings\u003c\/li\u003e\n\u003cli\u003eShallow oil groove configuration noted in the fitment data\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003ePart number 4742 is an engine piston ring set application for Chevrolet and GMC trucks, vans, and full-size passenger vehicles listed in the fitment data. The ring package uses grey iron for the top and second rings, with phosphate surface treatment to support consistent break-in behavior, while the oil ring uses a steel rail and stainless expander with chrome treatment on the rail surface. This configuration is specified for engines with a 3.736-inch bore and standard oversize.\u003c\/p\u003e\u003cp\u003eFits 1993-1999 Chevrolet C1500, N\/A; 1993-1999 Chevrolet K1500, N\/A; 1993-1998 Chevrolet C2500, N\/A; 1993-1998 Chevrolet K2500, N\/A; 1993-1995 Chevrolet G10, N\/A; 1993-1995 Chevrolet G20, N\/A; 1993 GMC Caprice, N\/A; 1996-2002 Chevrolet Express 1500, N\/A; 1996-2002 Chevrolet Express 2500, N\/A; 1996-2002 GMC Savana 1500, N\/A; 1996-2002 GMC Savana 2500, N\/A; 1993-1999 GMC C1500, N\/A; 1993-1999 GMC C2500, N\/A; 1993-1999 GMC K1500, N\/A; 1993-1995 GMC G1500, N\/A; 1993-1995 GMC G2500, N\/A; 1993-1995 GMC K2500, N\/A.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestoring cylinder sealing in worn engine assemblies\u003c\/li\u003e\n\u003cli\u003eReducing oil control issues related to ring wear\u003c\/li\u003e\n\u003cli\u003eAddressing compression loss from tired piston rings\u003c\/li\u003e\n\u003cli\u003eSupporting rebuilds that require standard bore ring dimensions\u003c\/li\u003e\n\u003cli\u003eReplacing rings in engines with shallow oil groove pistons\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify bore size, groove dimensions, and piston configuration before installation. Confirm the engine matches the listed 3.736-inch bore specification and shallow oil groove note. Clean ring lands thoroughly and follow the engine builder’s ring gap and break-in procedures for the application.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003ePart number 4742 is specified with material and surface-treatment details that support consistent engine rebuild service. Use the fitment data and bore specification to confirm application before assembly.\u003c\/p\u003e","brand":"BBTV","offers":[{"title":"Default Title","offer_id":53669307809973,"sku":"BBTV-4742","price":57.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/HA_4742_Fro.jpg?v=1793687134","url":"https:\/\/www.partcatalog.com\/products\/bbtv-4742-engine-piston-ring","provider":"PartCatalog","version":"1.0","type":"link"}