{"product_id":"arp-134-1202-chromoly-header-bolt-kits-chevrolet-gen-iii-ls-series","title":"ARP 134-1202 Chromoly Header Bolt Kits Chevrolet Gen III LS Series","description":"\u003cp\u003eIn this review the ARP 134-1202 Chromoly Header Bolt Kit is evaluated for anyone replacing or upgrading header fasteners on Chevrolet Gen III\/LS engines. The bottom line: this kit is for owners who want a stronger, longer-lasting alternative to stock bolts during exhaust or header installation. Rated at 170,000 psi and built from steel with a black oxide finish, these bolts focus on longevity and reliable clamping force under heat and vibration, making them a practical choice for routine maintenance and performance exhaust work.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh tensile strength:\u003c\/strong\u003e The 170,000 psi rating delivers much greater clamp strength than typical factory bolts, reducing the chance of fastener stretch or failure under high-heat exhaust conditions.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eChromoly steel construction:\u003c\/strong\u003e The steel material provides durable performance for long-term use in automotive exhaust applications where repeated heating and cooling occur.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eBlack oxide finish:\u003c\/strong\u003e The finish helps resist corrosion and gives a low-gloss appearance that blends with most header and manifold finishes.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eComplete kit contents:\u003c\/strong\u003e Each kit includes the exact number of parts required for the application plus premium washers, simplifying installation without sourcing extra hardware.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHead style options:\u003c\/strong\u003e Available with either hex or 12-point heads so installers can choose the drive style that matches their tools and access constraints.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis kit is ideal for owners of Chevrolet Gen III\/LS series engines who are installing aftermarket headers or replacing worn OEM exhaust fasteners. It suits DIY mechanics, professional installers, and enthusiasts who prioritize reliability and component longevity in exhaust systems.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include buyers seeking stainless steel or ceramic-coated bolts for extreme corrosion resistance or for matching a specific visual finish not offered by a black oxide chromoly kit. Also, if you require non-steel materials for a particular application, select a different fastener grade.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eMuch stronger than stock bolts thanks to the 170,000 psi rating, increasing durability under thermal cycling.\u003c\/li\u003e\n \u003cli\u003eQuality chromoly steel construction provides reliable performance in exhaust manifold and header installations.\u003c\/li\u003e\n \u003cli\u003eIncludes the correct number of parts and premium washers, which streamlines installation and reduces parts hunting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eBlack oxide finish offers some corrosion resistance but is not as corrosion-proof as stainless steel options.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eARP 134-1202 Chromoly Header Bolt Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eEngine fitment\u003c\/td\u003e\n\u003ctd\u003eChevrolet Gen III \/ LS Series\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eFastener material\u003c\/td\u003e\n\u003ctd\u003eSteel (chromoly)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTensile strength\u003c\/td\u003e\n\u003ctd\u003e170,000 psi rating\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eFastener finish\u003c\/td\u003e\n\u003ctd\u003eBlack oxide\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eFastener style\u003c\/td\u003e\n\u003ctd\u003eBolt with hex or 12-point heads\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eIncludes\u003c\/td\u003e\n\u003ctd\u003eSpecific number of parts required plus premium washers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe ARP 134-1202 kit is a solid choice for anyone replacing header fasteners on Chevy Gen III\/LS engines who wants strength and dependable fit. It offers clear value through higher tensile strength and complete kit contents, making it worth the upgrade over stock hardware for most exhaust work and performance installs.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill these bolts fit my LS series header?\u003c\/strong\u003e\u003cbr\u003eYes, the kit is made specifically for Chevrolet Gen III\/LS series installations and includes the correct number of parts for that application.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the bolts corrosion resistant?\u003c\/strong\u003e\u003cbr\u003eThe black oxide finish provides basic corrosion resistance and a subdued look, but it is not as corrosion-proof as stainless steel finishes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need special tools for the head styles?\u003c\/strong\u003e\u003cbr\u003eEither standard hex sockets or a 12-point socket can be used depending on the head style included; choose the drive style that matches your tool access and preference.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":48193474167003,"sku":"B00E5YSJ5U","price":39.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71ejOr_kNiL._AC_SL1500.jpg?v=1770260448","url":"https:\/\/gearmusthave.com\/products\/arp-134-1202-chromoly-header-bolt-kits-chevrolet-gen-iii-ls-series","provider":"GearMustHave","version":"1.0","type":"link"}