{"product_id":"arp-big-block-chevy-header-stud-kit-3-8-in-x-1-67-in-oal-12-point-nuts-set-of-16-400-1403","title":"ARP Big Block Chevy Header Stud Kit, 3\/8 in x 1.67 in OAL, 12-Point Nuts, Set of 16 | 400-1403","description":"\u003cp\u003eThis ARP Big Block Chevy header stud kit replaces stock header bolts with 3\/8 in diameter, 1.67 in long stainless steel studs finished in polished stainless for corrosion resistance. Each kit includes 12-point nuts for secure, positive-locking clamping force under high heat and vibration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStud Diameter: 3\/8 in\u003c\/li\u003e\n\u003cli\u003eOverall Length: 1.67 in\u003c\/li\u003e\n\u003cli\u003eNut Style: 12-Point\u003c\/li\u003e\n\u003cli\u003eMaterial: Stainless Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Polished\u003c\/li\u003e\n\u003cli\u003eQuantity: Set of 16\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBig Block Chevy\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch5\u003eWhat size are these header studs?\u003c\/h5\u003e\u003cp\u003eEach stud measures 3\/8 in in diameter and 1.67 in overall length.\u003c\/p\u003e\u003ch5\u003eWhat material are the studs made from?\u003c\/h5\u003e\u003cp\u003eThey are made from stainless steel with a polished finish.\u003c\/p\u003e\u003ch5\u003eWhat nut style is included?\u003c\/h5\u003e\u003cp\u003eThe kit includes 12-point nuts for secure, high-clamping-force installation.\u003c\/p\u003e\u003ch5\u003eHow many studs are in this kit?\u003c\/h5\u003e\u003cp\u003eThis kit includes a set of 16 studs, sized for Big Block Chevy applications.\u003c\/p\u003e\u003ch5\u003eWhat engine platform is this kit designed for?\u003c\/h5\u003e\u003cp\u003eThis header stud kit is designed for Big Block Chevy applications.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What size are these header studs?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Each stud measures 3\/8 in in diameter and 1.67 in overall length.\"}},{\"@type\":\"Question\",\"name\":\"What material are the studs made from?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"They are made from stainless steel with a polished finish.\"}},{\"@type\":\"Question\",\"name\":\"What nut style is included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The kit includes 12-point nuts for secure, high-clamping-force installation.\"}},{\"@type\":\"Question\",\"name\":\"How many studs are in this kit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This kit includes a set of 16 studs, sized for Big Block Chevy applications.\"}},{\"@type\":\"Question\",\"name\":\"What engine platform is this kit designed for?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This header stud kit is designed for Big Block Chevy applications.\"}}]}\u003c\/script\u003e","brand":"Auto Racing Products","offers":[{"title":"Default Title","offer_id":42528345587760,"sku":"BQDN_400-1403","price":169.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/ARP400-1403.jpg?v=1761961838","url":"https:\/\/berryperformancesales.com\/products\/arp-big-block-chevy-header-stud-kit-3-8-in-x-1-67-in-oal-12-point-nuts-set-of-16-400-1403","provider":"Berry Performance Sales","version":"1.0","type":"link"}