{"product_id":"bbtv-2c4639-engine-piston-ring","title":"BBTV 2C4639 Engine Piston Ring","description":"\u003ch2\u003eEngine Piston Ring for Volkswagen Applications\u003c\/h2\u003e\u003cp\u003eThis engine piston ring set is built for Volkswagen engines with a 3.248-inch bore and standard oversize specification. Part number 2C4639 uses chrome and phosphate surface treatments to support ring sealing and wear control in the cylinder bore.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eStandard oversize piston ring set for 82.50 mm engine bores\u003c\/li\u003e\n\u003cli\u003eChrome top ring surface for improved wear resistance\u003c\/li\u003e\n\u003cli\u003ePhosphate-treated second ring for controlled break-in characteristics\u003c\/li\u003e\n\u003cli\u003eSteel top ring construction for strength and stability\u003c\/li\u003e\n\u003cli\u003eSteel rail and stainless expander oil ring design for oil control\u003c\/li\u003e\n\u003cli\u003eFits four-cylinder engine applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003ePart number 2C4639 is an engine piston ring set for Volkswagen CC, Tiguan, Beetle, Eos, Golf, Jetta, Passat, Bora, Pointer, and Cabrio applications listed in the fitment data. The ring package includes a chrome top ring, a phosphate-treated second ring, and a steel rail\/stainless expander oil ring arrangement to support compression sealing, oil control, and cylinder wall contact. With a 3.248-inch bore size and standard oversize specification, it matches the engine dimensions shown in the product data.\u003c\/p\u003e\u003cp\u003eThis part cross-references Monroe Shocks \u0026amp; Struts (e.g., 06A 198 151 C, 08-435100-10) 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 linked to ring wear or poor sealing\u003c\/li\u003e\n\u003cli\u003eAddressing blow-by from damaged or fatigued ring surfaces\u003c\/li\u003e\n\u003cli\u003eReplacing rings during an engine rebuild or top-end service\u003c\/li\u003e\n\u003cli\u003eCorrecting cylinder sealing issues in high-mileage Volkswagen engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify bore size, groove dimensions, and ring end gap before installation. Clean the piston grooves thoroughly and inspect the cylinder walls for scoring or taper before assembly. Confirm the fitment notes for the exact Volkswagen engine application, since the catalog lists multiple model years under part number 2C4639.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eUse this part only where the listed bore and groove specifications match the engine. The chrome and phosphate surface treatments, along with the steel ring construction, provide the material and finish details needed for a proper rebuild selection.\u003c\/p\u003e","brand":"BBTV","offers":[{"title":"Default Title","offer_id":53669302010037,"sku":"BBTV-2C4639","price":83.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/HA_2C4639_Fro.jpg?v=1793686245","url":"https:\/\/www.partcatalog.com\/products\/bbtv-2c4639-engine-piston-ring","provider":"PartCatalog","version":"1.0","type":"link"}