{"product_id":"arp-chevrolet-small-block-ls-12pt-head-bolt-kit-fits-ls-2004-later-except-ls9","title":"ARP Chevrolet Small Block LS 12pt Head Bolt Kit (Fits LS, 2004 \u0026 later except LS9)","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e234-3725\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 672036049263\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eARP Chevrolet Small Block LS 12pt Head Bolt Kit (Fits 2004+ LS Cathedral Port Heads except LS9)\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eSecure your LS engine with ARP's 12-point head bolt kit designed for 2004 and later Chevrolet small block LS engines featuring cathedral port heads, excluding the LS9. This 32-piece kit replaces factory bolts with stronger components that maintain head gasket seal under high cylinder pressures from boost or nitrous. Ideal for performance builds in Corvettes, trucks, and muscle cars.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eARP2000 Alloy Construction:\u003c\/strong\u003e Forged from proprietary material with 220,000 PSI tensile strength to handle extreme horsepower and boost levels without stretching or fatigue.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-Point Bolt Design:\u003c\/strong\u003e Allows precise wrench engagement for accurate torquing up to 70 ft-lbs, reducing slip risk and ensuring even clamping force across the head.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Kit Contents:\u003c\/strong\u003e Includes 16 long bolts (6.750 inches) and 16 short bolts (3.155 inches) for both cylinder heads, ready for immediate installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack Oxide Finish:\u003c\/strong\u003e Provides rust and corrosion protection for long-term durability in harsh engine environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Clamp Load:\u003c\/strong\u003e Delivers up to 45% more clamping force than OEM bolts, preventing gasket blowout in high-performance applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eUse ARP Ultra-Torque fastener lubricant or moly paste on threads and under bolt heads for correct torque values.\u003c\/li\u003e\n\u003cli\u003eFollow ARP torque specs: 70 ft-lbs in three stages with proper lubing to avoid over-torquing.\u003c\/li\u003e\n\u003cli\u003eSpecial order item. allow extra time for processing if out of stock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003eClean block threads thoroughly and chase with ARP thread chaser before assembly.\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM or aftermarket cathedral port LS heads. not for rectangular port heads like LS3 or LS9.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005-2007\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCorvette\u003c\/td\u003e\n\u003ctd\u003eBase, Standard (LS2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004-2006\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eGTO\u003c\/td\u003e\n\u003ctd\u003eBase (LS1, LS2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2006-2008\u003c\/td\u003e\n\u003ctd\u003ePontiac\u003c\/td\u003e\n\u003ctd\u003eGrand Prix\u003c\/td\u003e\n\u003ctd\u003eGXP (LS4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005-2009\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eTrailBlazer\u003c\/td\u003e\n\u003ctd\u003eSS (LS2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2007-2009\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eSilverado 1500\u003c\/td\u003e\n\u003ctd\u003eLTZ, WT (6.0L LY6)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2007-2009\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eSierra 1500\u003c\/td\u003e\n\u003ctd\u003eSLE, SLT (6.0L L96)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005-2007\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eExpress 2500\u003c\/td\u003e\n\u003ctd\u003eBase (6.0L LQ4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005-2009\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eColorado\u003c\/td\u003e\n\u003ctd\u003eZ71 (5.3L LH8)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose ARP?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eARP sets the standard for engine fasteners trusted in professional racing for decades.\u003c\/li\u003e\n\u003cli\u003eEvery bolt exceeds OEM specs for strength and fatigue resistance in demanding conditions.\u003c\/li\u003e\n\u003cli\u003ePrecision machining ensures perfect fit and repeatable torque on LS engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will this kit fit 2008+ LS3 engines?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e No, this kit fits only 2004+ cathedral port LS heads like LS2 and LS4. LS3 uses rectangular port heads requiring ARP kit 234-3731.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material are the bolts made from?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Bolts are forged from ARP2000 chrome moly alloy with 220,000 PSI tensile strength and black oxide coating for corrosion resistance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the warranty and torque procedure?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e ARP provides a lifetime warranty against breakage. torque to 70 ft-lbs using ARP lube in three steps: 25, 40, then 70 ft-lbs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS Ground or USPS Priority\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Shipped in protective ARP box, 10 x 8 x 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.2 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":39861246033999,"sku":"ARP234-3725","price":171.14,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/arp-chevrolet-small-block-ls-12pt-head-bolt-kit-fits-ls-2004-later-except-ls9-arp.jpg?v=1768369993","url":"https:\/\/www.blackopsautoworks.com\/products\/arp-chevrolet-small-block-ls-12pt-head-bolt-kit-fits-ls-2004-later-except-ls9","provider":"Black Ops Auto Works","version":"1.0","type":"link"}