{"product_id":"ca625-head-stud-kit","title":"CA625+ Head Stud Kit","description":"The ARP CA625+ head stud kit is engineered for Nissan RB DOHC and Twin Cam engines, including models such as the RB20DET, RB25DET, RB26DETT, RB30ET, and CA18DET. These studs are constructed from ARP's proprietary Custom Age 625+ material, offering superior tensile strength and fatigue life compared to standard aerospace alloys.\n\nThe studs feature a 1\/2\" diameter and are centerless ground for precise concentricity. They undergo heat treatment before thread rolling to ensure maximum thread strength and durability. The kit also includes 12-point nuts, designed for high clamping force and ease of use with appropriate tools.\n\nThis kit is a direct replacement for factory head bolts, providing a more secure and reliable clamping solution for high-performance engine applications. The Custom Age 625+ material offers excellent resistance to fatigue and stretching, crucial for maintaining head gasket seal integrity under demanding conditions.","brand":"ARP CA625+","offers":[{"title":"Default Title","offer_id":52686986248504,"sku":"AR9994209-CA","price":1030.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/660676809.jpg?v=1784879212","url":"https:\/\/store.motormia.co\/products\/ca625-head-stud-kit","provider":"MOTORMIA","version":"1.0","type":"link"}