{"product_id":"arp-m10-x-1-25-locking-flange-nut-kit-10-pack","title":"ARP M10 x 1.25 Locking Flange Nut Kit (10 pack)","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003e200-8683\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e 672036033521\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eARP M10 x 1.25 Locking Flange Nut Kit (10 Pack) for Honda Civic\/Acura RSX\/Integra B\/K-Series, Subaru WRX\/STI Exhaust\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThis ARP M10 x 1.25 locking flange nut kit contains 10 high-performance 12-point nuts designed to secure exhaust manifolds and headers on popular import performance engines. It fits Honda Civic models from 1988-2011 with B-series and K-series engines, Acura Integra\/RSX, and Subaru Impreza WRX\/STI for reliable fastening in street and track use. The nuts deliver consistent clamp load to prevent leaks and loosening during repeated heat cycles.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-Point Flange Design:\u003c\/strong\u003e Ensures positive engagement with sockets and even load distribution across flange surfaces for secure header mounting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Locking Mechanism:\u003c\/strong\u003e Prevailing torque feature resists back-off from engine vibration and thermal expansion\/contraction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision M10 x 1.25 Threads:\u003c\/strong\u003e Direct replacement for OEM studs on Honda B\/D\/K-series, Acura, and Subaru EJ applications with exact fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Strength Alloy Steel:\u003c\/strong\u003e ARP proprietary material withstands 200,000+ psi tensile strength for long-term durability in racing conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack Oxide Finish:\u003c\/strong\u003e Provides corrosion protection in harsh underhood environments exposed to moisture and road salt\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eKit contains exactly 10 nuts suitable for one typical 4-2-1 or log-style manifold\u003c\/li\u003e\n\u003cli\u003eMatches ARP header stud kits like 208-4301 for Honda B-series or 208-4305 for K-series\u003c\/li\u003e\n\u003cli\u003eStore in dry location to maintain thread integrity before installation\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 studs and nuts with brake cleaner. apply ARP Ultra-Torque lubricant to threads and under flange\u003c\/li\u003e\n\u003cli\u003eUse 15mm\/16mm 12-point socket. torque in cross-pattern sequence to ARP specs (typically 25-35 ft-lbs depending on 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\u003e1988-1991\u003c\/td\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCivic\u003c\/td\u003e\n\u003ctd\u003eD-Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1992-2000\u003c\/td\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCivic\u003c\/td\u003e\n\u003ctd\u003eB-Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1990-2001\u003c\/td\u003e\n\u003ctd\u003eAcura\u003c\/td\u003e\n\u003ctd\u003eIntegra\u003c\/td\u003e\n\u003ctd\u003eB18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2002-2006\u003c\/td\u003e\n\u003ctd\u003eAcura\u003c\/td\u003e\n\u003ctd\u003eRSX\u003c\/td\u003e\n\u003ctd\u003eK20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2006-2011\u003c\/td\u003e\n\u003ctd\u003eHonda\u003c\/td\u003e\n\u003ctd\u003eCivic\u003c\/td\u003e\n\u003ctd\u003eSi K20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2002-2007\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX EJ20\/EJ25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2004-2021\u003c\/td\u003e\n\u003ctd\u003eSubaru\u003c\/td\u003e\n\u003ctd\u003eImpreza\u003c\/td\u003e\n\u003ctd\u003eWRX STI EJ25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1994-2005\u003c\/td\u003e\n\u003ctd\u003eMazda\u003c\/td\u003e\n\u003ctd\u003eMX-5 Miata\u003c\/td\u003e\n\u003ctd\u003eNA\/NB\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\u003eProven in NHRA, SCCA, and Formula Drift racing teams for mission-critical bolting\u003c\/li\u003e\n\u003cli\u003eEvery batch undergoes rigorous tensile and fatigue testing beyond SAE standards\u003c\/li\u003e\n\u003cli\u003eThread rolling process delivers smoother engagement and higher preload accuracy\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 Do these fit aftermarket headers on a 2000 Civic B16?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Yes, M10 x 1.25 matches most Skunk2, DC Sports, and ARP stud kits for B-series swaps and OEM replacements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the material and finish?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Forged from ARP 2000 alloy steel rated over 200,000 psi with black oxide plating for rust resistance and reduced galling.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What torque specs and tools are needed?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Torque 25-35 ft-lbs with ARP lube using a 12-point socket. recheck after 100 miles or first heat cycle.\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 First Class\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 Sealed poly bag in 4 x 3 x 1 inch corrugated box\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.25 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":43739353088079,"sku":"ARP200-8683","price":8.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/arp-m10-x-1_25-locking-flange-nut-kit-10-pack-arp.jpg?v=1768370629","url":"https:\/\/www.blackopsautoworks.com\/products\/arp-m10-x-1-25-locking-flange-nut-kit-10-pack","provider":"Black Ops Auto Works","version":"1.0","type":"link"}