{"product_id":"arp-chevy-ls-1-4in-flange-hex-header-bolt-kit","title":"ARP Header Bolt Kit For Chevrolet 1\/4˝ wide header flange Black Oxide Hex Head","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e134-1101\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 672036041953\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eARP Header Bolt Kit For Chevrolet Small Block Big Block V8 1955-2004 1\/4˝ Wide Header Flange Black Oxide Hex Head\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eSecure your exhaust headers with this ARP bolt kit designed for Chevrolet small block and big block V8 engines using 1\/4-inch wide flanges. Crafted from 8740 chrome moly steel with black oxide finish these hex head bolts deliver 180,000 PSI tensile strength for dependable clamping under high heat and vibration. This set of 8 bolts ensures headers remain tight for consistent exhaust flow and peak engine performance.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e8740 Chrome Moly Construction:\u003c\/strong\u003e Delivers 180,000 PSI tensile strength far exceeding Grade 8 hardware for lasting header retention in performance builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack Oxide Finish:\u003c\/strong\u003e Resists corrosion from exhaust gases and road conditions while minimizing galling during installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHex Head Design:\u003c\/strong\u003e Accepts standard 9\/16-inch sockets for quick torquing even in tight engine bay spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise 3\/8-16 x 1.000 Inch Threads:\u003c\/strong\u003e Matches Chevrolet 1\/4-inch wide header flanges perfectly preventing cross-threading and ensuring full thread engagement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in USA:\u003c\/strong\u003e Built to ARP exacting standards with rolled threads for superior fatigue resistance over cut threads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSet includes 8 bolts sufficient for most single exhaust header installations on V8 engines.\u003c\/li\u003e\n\u003cli\u003eCompatible with straight and angle plug cylinder heads using 1\/4-inch flange headers.\u003c\/li\u003e\n\u003cli\u003eStore in dry conditions to maintain black oxide protection.\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\u003eApply ARP Ultra-Torque assembly lube or nickel anti-seize to threads and under heads.\u003c\/li\u003e\n\u003cli\u003eTorque to 25-30 ft-lbs in a crisscross pattern. recheck after heat cycles.\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\u003e1955-2002\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eSmall Block V8\u003c\/td\u003e\n\u003ctd\u003e262-400 c.i.d. (Gen I)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1965-2002\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eBig Block Mark IV V8\u003c\/td\u003e\n\u003ctd\u003e366-502 c.i.d.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1955-1985\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eBel Air\u003c\/td\u003e\n\u003ctd\u003eV8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1967-1985\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCamaro\u003c\/td\u003e\n\u003ctd\u003eV8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1964-1977\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eChevelle\u003c\/td\u003e\n\u003ctd\u003eV8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1953-2004\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCorvette\u003c\/td\u003e\n\u003ctd\u003eV8 (non-LS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1964-1972\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eImpala\u003c\/td\u003e\n\u003ctd\u003eV8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1962-1979\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eNova\u003c\/td\u003e\n\u003ctd\u003eV8\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 fasteners power wins in NHRA IHRA and NASCAR racing series.\u003c\/li\u003e\n\u003cli\u003eExtensive testing ensures reliability beyond OEM specs.\u003c\/li\u003e\n\u003cli\u003ePrecision manufacturing provides consistent clamping loads.\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 LS-series engines?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e No this kit fits Gen I small block 262-400 c.i.d. and Mark IV big block 366-502 c.i.d. V8s with 1\/4-inch wide header flanges. LS engines require specific ARP kits like 234-1101.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e How does the material compare to stainless steel options?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e 8740 chrome moly black oxide offers higher tensile strength at 180,000 PSI versus stainless while providing excellent heat resistance for header use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What warranty applies?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e ARP includes a limited lifetime warranty against failure when installed and maintained per instructions.\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 Compact ARP branded box\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.3 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":39861236858959,"sku":"ARP134-1101","price":36.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/arp-header-bolt-kit-for-chevrolet-14-wide-header-flange-black-oxide-hex-head-arp.jpg?v=1768369907","url":"https:\/\/www.blackopsautoworks.com\/products\/arp-chevy-ls-1-4in-flange-hex-header-bolt-kit","provider":"Black Ops Auto Works","version":"1.0","type":"link"}