{"product_id":"arp-100-1110-header-bolts-with-hex-heads-8740-chrome-moly-black-oxide-16-piece-kit","title":"ARP 100-1110 Header Bolts with Hex Heads – 8740 Chrome Moly, Black Oxide, 16-Piece Kit","description":"\u003cp\u003eDesigned for exhaust header installation, ARP's premium bolt kit blends high-grade metallurgy with precision machining to deliver reliable, high-performance fasteners. This set supports demanding engine bays where fit and consistency matter, offering a balance of strength, finish, and ease of use.\u003c\/p\u003e\u003ch2\u003ePremium materials and strength\u003c\/h2\u003e\u003cp\u003eCrafted from heat-treated 8740 chrome moly steel and finished with a black oxide coating, these bolts meet exacting standards for durability. The combination of material and finish provides a robust, low-gloss appearance that remains steady under heat and vibration. You get a fastener that combines stiffness with controlled behavior under load.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeat-treated chrome moly steel for reliable strength\u003c\/li\u003e\n\u003cli\u003eBlack oxide finish for a clean look and surface protection\u003c\/li\u003e\n\u003cli\u003e170,000 psi tensile strength substantially higher than typical hardware\u003c\/li\u003e\n\u003cli\u003eTraditional hex style heads for easy torque with common tools\u003c\/li\u003e\n\u003cli\u003ePremium washers included for even load distribution\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDesigned for installation and quality control\u003c\/h2\u003e\u003cp\u003eThe set uses 3\/8 inch diameter bolts with a 1.000 under head length, and includes 16 pieces to support a complete header installation. ARP controls every step of production in-house to monitor quality and maintain tight tolerances.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e3\/8 inch diameter with 1.000 under head length\u003c\/li\u003e\n\u003cli\u003e16 piece set includes washers\u003c\/li\u003e\n\u003cli\u003eHex heads provide reliable torque interface\u003c\/li\u003e\n\u003cli\u003eIn-house manufacturing supports stringent quality control\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIn real world use, these bolts offer a solid, professional fit and a clean finish that handles heat and engine vibration. While outcomes vary by application, the kit is designed to support strong, dependable header mounting without overpromising on results.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What makes ARP 100-1110 header bolts suitable for exhaust installations?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Heat-treated 8740 chrome moly steel, black oxide finish, and 170,000 psi tensile strength provide strong, durable fasteners for header mounting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How many pieces are in the kit and what hardware is included?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The kit includes 16 bolts, 3\/8 inch diameter with a 1.000 under head length, plus premium washers.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":42470893617237,"sku":"B000CFQ35O","price":42.46,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/arp-100-1110-header-bolts-hex-heads-black-oxide-16pc.jpg?v=1778154775","url":"https:\/\/plentytorque.co.uk\/products\/arp-100-1110-header-bolts-with-hex-heads-8740-chrome-moly-black-oxide-16-piece-kit","provider":"PlentyTorque","version":"1.0","type":"link"}