{"product_id":"crank-bolt","title":"Crank Bolt","description":"The Chevrolet Performance harmonic balancer bolt (part #12557840) is engineered for reliability and strength in LS engines. It features under-head sealant to guarantee a leak-free installation, a critical factor in maintaining engine integrity.\n\nThis Chevrolet Performance bolt serves as a direct replacement, offering a robust solution for engine builds, maintenance, or repairs on compatible LS applications. The bolt specifications include a 16mm thread diameter with a coarse thread type, and a length of 5.000 inches. It is designed to fit all Gen 3 and Gen 4 LS engines, with specific compatibility noted for 1997-2017 4.8L V8, 1999-current 5.3L V8, and 1998-2004 5.7L LS-1\/LS-6 engines. It is also noted to service BTR Hyper-drive LS and LT applications.","brand":"GM Genuine Parts","offers":[{"title":"Default Title","offer_id":52688569893176,"sku":"12557840","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687901755.jpg?v=1784891170","url":"https:\/\/store.motormia.co\/products\/crank-bolt","provider":"MOTORMIA","version":"1.0","type":"link"}