{"product_id":"caterpillar-4p-2656-piston-ring","title":"Caterpillar 4P-2656 Piston Ring","description":"\u003cdiv\u003e\u003cp\u003eCat 4P-2656 is an OEM compression piston ring with a 120.65 mm gage diameter, cataloged as 4P-2656 in Caterpillar's parts catalog. This ring is designed for Caterpillar diesel engines and commonly appears in piston ring packs alongside 4P-2657 and 4P-2658 for certain G-series engines, such as those used in the G3306 family, where the 120.65 mm bore size defines the ring's fitment. CAT’s official parts pages confirm 4P-2656 as a piston ring with the 120.65 mm gage diameter, and cross-reference materials show it alongside related catalog numbers, indicating a shared bore-size family. Replacement sources also list 4P-2656 under the same OEM reference, including the M-4P2656 listing from Interstate-McBee as a direct Caterpillar piston ring counterpart and a compression-ring listing from third-party suppliers. Use this part when your engine requires a 120.65 mm gage diameter piston ring in a CAT ring-pack configuration; verify your engine model and bore compatibility before ordering.\u003c\/p\u003e\u003c\/div\u003e","brand":"CATERPILLAR","offers":[{"title":"New","offer_id":51677848666414,"sku":null,"price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_025824d0-ac68-484c-8f4a-4acdd44c89fb.jpg?v=1769568370","url":"https:\/\/plgautomation.com\/products\/caterpillar-4p-2656-piston-ring","provider":"PLG Automation ","version":"1.0","type":"link"}