{"product_id":"5150-arp-main-stud-kit-bmw-b58","title":"B58 ARP Main Stud Kit","description":"\u003ch2\u003e\u003cspan\u003eARP B58 Main Stud Kit\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003eThis ARP Main Stud Kit is designed to replace BMW main bolt part numbers 11128644674 and 11127613127 on B58, B58A, B58C, and B58D engines found in various BMW chassis, including the F22, F23, F30, F31, F32, F33, F34, F36, G01, G02, G20, G22, G23, G26, G29, G30, G42, and G43, as well as the Toyota GR Supra A90\/A91.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eUpgrading from factory main bolts to ARP Main Studs is a simple but highly beneficial upgrade for high-performance and high-horsepower engine builds. Increased clamping strength and consistency help improve bottom-end stability while keeping the main caps and crankshaft properly located under extreme loads.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eBenefits of ARP Main Studs\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConsistent Clamping Force: Provides more uniform and repeatable clamping across the main caps, helping maintain proper main bore and crankshaft alignment.\u003c\/li\u003e\n\u003cli\u003eImproved Block Rigidity: Increased clamping strength helps stabilize the bottom end under high cylinder pressure, RPM, and horsepower.\u003c\/li\u003e\n\u003cli\u003eReduced Main Cap Movement: Helps minimize main cap walk and movement under extreme loads, improving crankshaft and main bearing stability.\u003c\/li\u003e\n\u003cli\u003eReduced Fastener Stretch: High-strength ARP materials provide greater resistance to stretching and deformation compared to factory fasteners under high RPM and heavy loads.\u003c\/li\u003e\n\u003cli\u003eImproved Main Bearing Stability: More consistent main-cap clamping helps maintain bearing alignment and oil clearance under demanding operating conditions.\u003c\/li\u003e\n\u003cli\u003ePrecision-Manufactured Threads: ARP's precision manufacturing provides consistent thread engagement and reliable clamping while minimizing unnecessary stress on the engine block threads.\u003c\/li\u003e\n\u003c\/ul\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\"\u003eStep 1: 20 ft-lbs\u003cbr\u003eStep 2: 40 ft-lbs\u003cbr\u003eStep 3: 60 ft-lbs\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\u003ch3\u003e\u003cspan\u003eImportant Installation Note\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWhen converting from factory main bolts to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eARP Main Studs\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, the main bearing bores should always be measured after the studs are installed and torqued to specification.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe increased and more consistent clamping force of the studs can affect main bore geometry. Depending on the engine block, a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eline hone may be required\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e to restore proper bore size, roundness, and alignment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eProper main bore geometry and bearing oil clearance are critical for crankshaft stability, oil pressure, and bearing life. Always verify all measurements before final engine assembly.\u003c\/span\u003e\u003c\/p\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\u003chr\u003e\u003cp\u003e\u003cstrong\u003eSupplied in Egypt by iCode — the official 5150 AutoSport dealer.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cem\u003ePrice shown in EGP is an estimate at today's exchange rate. Final price confirmed after shipping and customs fees.\u003c\/em\u003e\u003c\/p\u003e","brand":"ARP Automotive Racing Products","offers":[{"title":"Default Title","offer_id":68331823988935,"sku":"ARP-MSK-B58","price":12426.36,"currency_code":"EGP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/2108\/3847\/files\/ARP-Main-Stud-Kit-for-BMW-Engines_8f80d3af-bd7d-4197-b072-cea00b5488b7.jpg?v=1794335085","url":"https:\/\/icode-egypt.com\/products\/5150-arp-main-stud-kit-bmw-b58","provider":"iCode - EG","version":"1.0","type":"link"}