{"product_id":"arp-big-block-chevy-header-stud-kit-12pt-3-8-1-670-100-1403","title":"ARP Big Block Chevy Header Stud Kit, 12-Point, 3\/8 x 1.670 OAL, Set of 16 | 100-1403","description":"\u003cp\u003eThis ARP header stud kit includes sixteen 3\/8 in diameter studs measuring 1.67 in long, paired with 12-point nuts. Studs are machined from chromoly steel and finished in black oxide for corrosion resistance. It's built for Big Block Chevy header installations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eType: Header Stud Kit\u003c\/li\u003e\n\u003cli\u003eDiameter: 3\/8 in\u003c\/li\u003e\n\u003cli\u003eLength: 1.67 in OAL\u003c\/li\u003e\n\u003cli\u003eNut Style: 12-Point\u003c\/li\u003e\n\u003cli\u003eMaterial: Chromoly Steel\u003c\/li\u003e\n\u003cli\u003eFinish: Black Oxide\u003c\/li\u003e\n\u003cli\u003eQuantity: Set of 16\u003c\/li\u003e\n\u003cli\u003ePart Number: 100-1403\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 engines does this header stud kit fit?\u003c\/h5\u003e\u003cp\u003eThis kit is designed for Big Block Chevy applications.\u003c\/p\u003e\u003ch5\u003eWhy use studs instead of bolts for headers?\u003c\/h5\u003e\u003cp\u003eStuds thread permanently into the block and use a nut to clamp the header, which distributes clamping load more evenly and reduces the risk of stripped threads from repeated bolt removal.\u003c\/p\u003e\u003ch5\u003eWhat nut style is included?\u003c\/h5\u003e\u003cp\u003eThis kit uses 12-point nuts.\u003c\/p\u003e\u003ch5\u003eHow many studs are included?\u003c\/h5\u003e\u003cp\u003eThis kit includes a set of 16 studs.\u003c\/p\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What engines does this header stud kit fit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This kit is designed for Big Block Chevy applications.\"}},{\"@type\":\"Question\",\"name\":\"Why use studs instead of bolts for headers?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Studs thread permanently into the block and use a nut to clamp the header, which distributes clamping load more evenly and reduces the risk of stripped threads from repeated bolt removal.\"}},{\"@type\":\"Question\",\"name\":\"What nut style is included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This kit uses 12-point nuts.\"}},{\"@type\":\"Question\",\"name\":\"How many studs are included?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This kit includes a set of 16 studs.\"}}]}\u003c\/script\u003e","brand":"Auto Racing Products","offers":[{"title":"Default Title","offer_id":42513185112112,"sku":"BQDN_100-1403","price":86.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9548\/3440\/files\/ARP100-1403.jpg?v=1761317566","url":"https:\/\/berryperformancesales.com\/products\/arp-big-block-chevy-header-stud-kit-12pt-3-8-1-670-100-1403","provider":"Berry Performance Sales","version":"1.0","type":"link"}