{"product_id":"arp-cylinder-head-bolt-kit-289-302-ford","title":"ARP Cylinder Head Bolt Kit 289\/302 Ford","description":"The ARP 154-3701 cylinder head bolt kit is engineered for optimal installation of original or aftermarket cylinder heads on 289\/302 Ford engines requiring 7\/16 inch head bolts.\n\nConstructed from premium 8740 chrome moly steel, these ARP High Performance Series bolts boast a tensile strength of 180,000 psi, surpassing Grade 8 hardware by 15%. The black oxide finish provides durability, while the 12-point head style offers a secure fit. Each kit includes 20 bolts and 20 hardened, parallel-ground washers, ensuring a complete fastening solution.\n\nARP meticulously heat-treats its bolts to 200,000 psi and thread rolls them after heat-treatment. This process results in approximately 1000% greater fatigue strength compared to fasteners threaded before heat-treatment, a common industry practice. Each bolt is stamped with the ARP logo as a mark of quality.\n\nThis bolt kit is specifically designed for 289\/302 engines with factory cylinder heads or compatible Edelbrock heads (60259 \u0026amp; 60379) that feature 7\/16 inch bolt holes. It is crucial to note that this set will not work with 351W \/ 5.8L engines or Ford Performance BOSS 302 blocks, as these utilize 1\/2 inch bolt holes. For applications requiring 1\/2 inch bolt holes, a different kit with reducer bushings\/washers (NPD part number M-6065-9BARP) is necessary.","brand":"ARP High","offers":[{"title":"Default Title","offer_id":52686988181816,"sku":"154-3701","price":66.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687888291.jpg?v=1784879225","url":"https:\/\/store.motormia.co\/products\/arp-cylinder-head-bolt-kit-289-302-ford","provider":"MOTORMIA","version":"1.0","type":"link"}