{"product_id":"5150-s58-thread-insert-kit","title":"BMW S58 Head Stud Thread Insert Kit","description":"\u003cp data-end=\"581\" data-start=\"271\"\u003eThe \u003cstrong data-end=\"314\" data-start=\"275\"\u003eBMW S58 Head Stud Thread Insert Kit\u003c\/strong\u003e provides your machine shop everything needed to repair or upgrade the engine block threads on BMW S58 engines. Designed for precision and durability, this kit allows you to restore damaged threads or prepare the block for oversized head studs for improved clamping strength.\u003c\/p\u003e\n\u003cp data-end=\"581\" data-start=\"271\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cem\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003ePlease note, this product does NOT include head studs.\u003c\/span\u003e Head Studs are available for purchase \u003ca rel=\"noopener\" href=\"https:\/\/5150autosport.com\/products\/arp-head-stud-kit-bmw-s58?variant=50211903668531\" target=\"_blank\"\u003ehere\u003c\/a\u003e.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-end=\"603\" data-start=\"583\"\u003e\u003cstrong\u003eEach BMW S58 Head Stud Thread Insert Kit includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"657\" data-start=\"606\"\u003e\u003cstrong data-end=\"655\" data-start=\"606\"\u003e(1) Specialized drill bit for proper thread preparation\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-end=\"657\" data-start=\"606\"\u003e\u003cstrong data-end=\"655\" data-start=\"606\"\u003e(1) High Speed Steel 3-Flute Tap\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-end=\"657\" data-start=\"606\"\u003e\u003cstrong data-end=\"655\" data-start=\"606\"\u003e(1) High Speed Steel Extended \u003cmeta charset=\"utf-8\"\u003e3-Flute Tap\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-end=\"657\" data-start=\"606\"\u003e\u003cstrong data-end=\"655\" data-start=\"606\"\u003e(14) Precision stainless-steel thread inserts\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-end=\"805\" data-start=\"725\"\u003e\u003cstrong data-end=\"745\" data-start=\"725\"\u003eRed threadlocker\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1065\" data-start=\"807\"\u003eAvailable in \u003cstrong data-end=\"828\" data-start=\"820\"\u003e11mm\u003c\/strong\u003e \u003cstrong\u003efor OEM-spec head stud thread repair\u003c\/strong\u003e or \u003cstrong data-end=\"877\" data-start=\"869\"\u003e12mm\u003c\/strong\u003e \u003cstrong\u003efor use with our\u003c\/strong\u003e\u003cstrong data-end=\"933\" data-start=\"895\"\u003e \u003ca rel=\"noopener\" href=\"https:\/\/5150autosport.com\/products\/arp-head-stud-kit-bmw-s58?variant=50211903668531\" target=\"_blank\"\u003eOversized Head Stud Kit\u003c\/a\u003e\u003c\/strong\u003e, this thread insert kit ensures a secure and permanent repair capable of withstanding extreme cylinder pressure and torque loads.\u003c\/p\u003e\n\u003cp data-end=\"1065\" data-start=\"807\"\u003e\u003cstrong\u003eHow these inserts work:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1065\" data-start=\"807\"\u003e\u003cmeta charset=\"utf-8\"\u003eOur insert design supports the use of both factory head bolts and high-quality aftermarket ARP head studs. These fasteners use rolled threads, which are up to 20% stronger than cut threads, and are engineered to flex and return to shape as the engine heats and cools—maintaining consistent clamping pressure on the head gasket throughout every heat cycle.\u003c\/p\u003e\n\u003cp data-end=\"1065\" data-start=\"807\"\u003e\u003cstrong\u003eBenefits of Installing Oversized Head Studs:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli data-end=\"1065\" data-start=\"807\"\u003e\n\u003cstrong\u003eRepair Worn or Damaged Threads\u003c\/strong\u003e\u003cbr\u003eWhen an engine block’s head bolt holes become stripped or elongated from repeated torque cycles or overheating, a standard-size stud may no longer hold properly.\u003cbr\u003e \u003cbr\u003eBy drilling and re-tapping the holes to a larger diameter and using oversized studs, you restore proper thread engagement and strength—often stronger than original.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1065\" data-start=\"807\"\u003e\n\u003cstrong\u003eIncrease Clamping Force\u003c\/strong\u003e\u003cbr\u003eOversized studs can have a larger shank diameter, which increases tensile strength and reduces stretch under high cylinder pressures. This is particularly beneficial for high-boost turbo where combustion pressures are extreme.\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1065\" data-start=\"807\"\u003e\n\u003cstrong\u003eReduce Head Gasket Failure\u003c\/strong\u003e\u003cbr\u003eStronger or larger studs provide more uniform clamping across the cylinder head, which improves gasket sealing and minimizes the risk of head lift or gasket blowout.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eNot all engine blocks are suitable for oversize head stud installation. Due to differences in casting thickness, core shift, and material distribution, some blocks may not have enough surrounding material to be safely machined for larger fasteners.\u003c\/p\u003e\n\u003cp\u003eA skilled and experienced machinist must inspect the block and be confident in its integrity before performing any machining. Improper assessment or installation may result in cracking, coolant passage intrusion, or structural failure. All modifications are performed at the installer’s own risk.\u003c\/p\u003e\n\u003cp data-end=\"1065\" data-start=\"807\"\u003e\u003cem\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003ePlease Note: Installing oversized head studs requires precise machining; drilling and tapping the block must be completely straight and to the correct depth. \u003c\/span\u003e\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-end=\"1065\" data-start=\"807\"\u003e\u003cem\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003eDon't have a machine shop capable of the job?\u003c\/span\u003e Send your block to 5150 for our \u003ca href=\"https:\/\/5150autosport.com\/products\/s58-oversized-head-stud-installation-service\"\u003eoversized head stud installation service\u003c\/a\u003e.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eBMW S58 Applications:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e2 Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e2023-Present     G87     M2\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3 Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e2021-Present     G80     M3\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4 Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e2021-Present     G82\/G83     M4\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eX3 Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e2019-Present     F97     X3M\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eX4 Series\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e2019-Present     F98     X4M\u003c\/p\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":"5150 AutoSport","offers":[{"title":"Inserts Only \/ 11 mm OEM-spec studs","offer_id":68329788899527,"sku":null,"price":16208.46,"currency_code":"EGP","in_stock":true},{"title":"Inserts Only \/ 12 mm Oversized head studs","offer_id":68329788932295,"sku":null,"price":16208.46,"currency_code":"EGP","in_stock":true},{"title":"Complete Kit \/ 11 mm OEM-spec studs","offer_id":68329788965063,"sku":null,"price":32417.46,"currency_code":"EGP","in_stock":true},{"title":"Complete Kit \/ 12 mm Oversized head studs","offer_id":68329788997831,"sku":null,"price":32417.46,"currency_code":"EGP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/2108\/3847\/files\/Head-Stud-Thread-Installation-Kit_1f6f45de-4180-42e3-b835-2f481ed6bf30.webp?v=1794334012","url":"https:\/\/icode-egypt.com\/products\/5150-s58-thread-insert-kit","provider":"iCode - EG","version":"1.0","type":"link"}