{"product_id":"arp-bmw-e30-m20-2-5l-6cyl-head-stud-kit","title":"ARP BMW E30 M20 2.5L 6cyl Head Stud Kit","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e201-4305\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 672036042776\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eARP BMW E30 M20 2.5L 6cyl Head Stud Kit 1987-1991 325i 325is 325iX\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eARP head stud kit 201-4305 fits 1987-1991 BMW E30 models with M20 2.5L engines including 325i 325is and 325iX. These studs provide consistent clamping force to seal cylinder heads under high boost or compression. Built for reliability in street and track use with precision engineering.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eARP 8740 Chromoly Steel:\u003c\/strong\u003e Heat-treated to 200000 PSI tensile strength for dependable head gasket sealing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStud Design:\u003c\/strong\u003e Minimizes main cap and block thread damage while ensuring accurate torque values\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRolled Threads:\u003c\/strong\u003e Offer 1000% greater fatigue strength than cut threads for repeated torquing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatched Hardware:\u003c\/strong\u003e Includes washers and instructions for direct bolt-in replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Purpose Fit:\u003c\/strong\u003e Handles daily driving track days and drag strip demands without failure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eInspect head and block surfaces before installation for flatness\u003c\/li\u003e\n\u003cli\u003eTorque to ARP specs after engine warm-up cycles\u003c\/li\u003e\n\u003cli\u003eCompact packaging fits easily in tool bags for trackside service\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 fastener lubricant on threads and under washer faces\u003c\/li\u003e\n\u003cli\u003eTorque in ARP-specified sequence starting at center studs\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\u003e1987-1991\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e325i\u003c\/td\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1987-1991\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e325is\u003c\/td\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1988-1991\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003e325iX\u003c\/td\u003e\n\u003ctd\u003eBase\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\u003eDecades of motorsport victories prove real-world strength\u003c\/li\u003e\n\u003cli\u003eExact-fit kits eliminate guesswork in high-horsepower setups\u003c\/li\u003e\n\u003cli\u003eEngineered threads resist galling and maintain clamp over time\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 Does this kit fit all E30 M20B25 engines?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes it matches 1987-1991 BMW 325i Base 325is Base and 325iX Base with M20 2.5L six-cylinder\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material are the studs made from?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e High-grade 8740 chromoly steel heat-treated to 200000 PSI with rolled threads for maximum fatigue resistance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the ARP warranty?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Lifetime warranty against manufacturing defects when installed and torqued per ARP guidelines\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 Secure foam-lined box 12 x 7 x 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.1 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":43739353677903,"sku":"ARP201-4305","price":271.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/arp-bmw-e30-m20-2_5l-6cyl-head-stud-kit-arp.jpg?v=1768370645","url":"https:\/\/www.blackopsautoworks.com\/products\/arp-bmw-e30-m20-2-5l-6cyl-head-stud-kit","provider":"Black Ops Auto Works","version":"1.0","type":"link"}