{"product_id":"b58-arp-625-custom-age-main-stud-kit","title":"B58 ARP 625+ Custom Age Main Stud Kit","description":"\u003ch2\u003eToyota BMW B58 625+ Custom Age Main Stud Kit\u003c\/h2\u003e\n\u003cp\u003eWhen we started developing our B58 Billet Main Cap system, we needed a main stud strong enough to handle the extreme loads of high-horsepower B58 builds. Working with ARP, we developed a 625+ Custom Age Main Stud Kit to provide the increased strength and clamping force needed for serious B58 performance applications.\u003c\/p\u003e\n\u003cp\u003eManufactured from ARP 625+ Custom Age material, these high-strength main studs provide exceptional tensile strength, fatigue resistance, and consistent clamping force for extreme-power applications.\u003c\/p\u003e\n\u003cp\u003eThis ARP Main Stud Kit is designed to replace BMW part numbers 11128644674 and 11127613127 for B58, B58A, B58C, and B58D engines found across various BMW chassis, including F22, F23, F30, F31, F32, F33, F34, F36, G20, G22, G23, G26, G30, G01, G02, G29, G42, and G43, as well as the Toyota GR Supra A90\/A91.\u003c\/p\u003e\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eARP 625+ Custom Age material\u003c\/li\u003e\n\u003cli\u003eIncreased strength and fatigue resistance\u003c\/li\u003e\n\u003cli\u003eMore consistent main-cap clamping\u003c\/li\u003e\n\u003cli\u003eHelps minimize main-cap movement under extreme loads\u003c\/li\u003e\n\u003cli\u003eImproved crankshaft and main-bearing stability\u003c\/li\u003e\n\u003cli\u003eIdeal for high-RPM and high-horsepower B58 builds\u003c\/li\u003e\n\u003cli\u003eDirect replacement for OEM bolt part #11128644674 and #11127613127\u003c\/li\u003e\n\u003cli\u003eWorks with OEM B58 engine blocks and factory main caps\u003c\/li\u003e\n\u003cli\u003eDesigned for use with 5150 AutoSport B58 Billet Main Caps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen opting for main studs instead of factory bolts, it's important to note that the engine builder should mic the bores. Using studs may require a line hone to ensure proper fitment and alignment. A line hone is a machining process that can be used to resize and reshape the main bearing bores, ensuring that they are perfectly round and concentric. This is crucial for ensuring proper oil clearance and preventing premature bearing wear. By mic'ing the bores and performing a line hone if necessary, engine builders can ensure that the main studs are installed correctly and that the engine will perform reliably and at its best.\u003c\/p\u003e\n\u003cdiv dir=\"ltr\" role=\"presentation\"\u003e\n\u003ch3\u003e\u003cspan\u003eInstallation Instructions\u003c\/span\u003e\u003c\/h3\u003e\n\u003col start=\"1\"\u003e\n\u003cli\u003eThoroughly clean all threaded holes in the engine block. If necessary, use an ARP thread chaser to ensure clean threads and proper engagement.\u003c\/li\u003e\n\u003cli\u003eInspect all studs, nuts, and washers for damage and verify proper fit, length, and dimensions before installation.\u003c\/li\u003e\n\u003cli\u003eInstall the main studs into the engine block by hand until snug. Do not overtighten.\u003c\/li\u003e\n\u003cli\u003eInstall the main caps and check for proper fit, alignment, and any binding.\u003c\/li\u003e\n\u003cli\u003eApply ARP Ultra-Torque Fastener Assembly Lubricant to the stud threads, nuts, washers, and washer contact surfaces.\u003c\/li\u003e\n\u003cli\u003eInstall the washers and nuts and tighten them by hand. Do not substitute motor oil or other lubricants for ARP Ultra-Torque.\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"isSelectedEnd\"\u003eFollowing the manufacturer's recommended main-cap tightening sequence, torque all main stud nuts progressively in three steps using ARP Ultra-Torque:\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eStep 1:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 25 ft-lbs\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eStep 2:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 50 ft-lbs\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eStep 3:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 75 ft-lbs\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eAfter final torque, measure the main bearing bores and verify proper size, roundness, and alignment.\u003c\/li\u003e\n\u003cli\u003eIf necessary, line hone the main bores with the ARP main studs installed and torqued to specification.\u003c\/li\u003e\n\u003cli\u003eVerify final main bearing oil clearances before engine assembly.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003cdiv dir=\"ltr\" role=\"presentation\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv dir=\"ltr\" role=\"presentation\"\u003e\n\u003cdiv role=\"presentation\" dir=\"ltr\"\u003e\n\u003ch2\u003e\u003cspan\u003eFitment\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan\u003eBMW 2 Series\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eF22 \/ F23 M240i\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eF22 \/ F23 M240i xDrive\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eG42 \/ G43 M240i xDrive\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eBMW 3 Series\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eF30 \/ F31 \/ F34 340i\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eF30 \/ F31 \/ F34 340i xDrive\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eG20 M340i\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eG20 M340i xDrive\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eBMW 4 Series\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eF32 \/ F33 \/ F36 440i\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eF32 \/ F33 \/ F36 440i xDrive\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eG22 \/ G23 M440i\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eG22 \/ G23 M440i xDrive\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eG26 M440i xDrive Gran Coupe\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eBMW 5 Series\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eG30 540i — B58A (2017–2019)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eG30 540i — B58C (2020+)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eG30 540i xDrive — B58A (2017–2019)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eG30 540i xDrive — B58C (2020+)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eBMW X3\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eG01 X3 M40i\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eBMW X4\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eG02 X4 M40i\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eBMW Z4\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eG29 Z4 M40i\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eToyota GR Supra\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eA90 \/ A91 GR Supra\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv dir=\"ltr\" role=\"presentation\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"ARP Automotive Racing Products","offers":[{"title":"Default Title","offer_id":53840620126515,"sku":"ARP-MSK-B58-CA","price":799.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/3827\/3587\/products\/ARP-Main-Stud-Kit-for-BMW-Engines.jpg?v=1680743473","url":"https:\/\/5150autosport.com\/ar\/products\/b58-arp-625-custom-age-main-stud-kit","provider":"5150 AutoSport","version":"1.0","type":"link"}