{"product_id":"sierra-18-6457-807757t-serpentine-idler-belt-pulley","title":"Sierra 18-6457, 807757T Serpentine Idler Belt Pulley","description":"\u003cdiv\u003e\u003cp\u003eThe Sierra 18-6457 (807757T) Serpentine Belt Idler Pulley is a direct replacement for Mercury\/MerCruiser 807757T and is designed for late-model GM V6 and V8 MerCruiser engines' serpentine belt drive. It features a 3-inch outside diameter and is sized for a 13\/16-inch belt width, with a composite pulley construction suitable for marine use. As 18-6457, it is widely sold as the Sierra replacement for MerCruiser applications and is cross-referenced by retailers as 807757T.\u003c\/p\u003e\u003c\/div\u003e","brand":"Sierra","offers":[{"title":"New","offer_id":46267996143850,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-016.png?v=1788727429","url":"https:\/\/gtghardware.com\/products\/sierra-18-6457-807757t-serpentine-idler-belt-pulley","provider":"GTG Hardware","version":"1.0","type":"link"}