{"product_id":"arp-head-stud-kit-bmw-m2-m3-m4-g8x-s58-201-4705","title":"ARP Head Stud Kit - BMW M2\/M3\/M4 G8x S58 201-4705","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eUpgrade the cylinder head clamping on your high performance BMW S58 with this premium ARP Head Stud Kit. Designed specifically for the BMW M2\/M3\/M4, these high strength studs provide significantly greater and more consistent clamping force than the factory torque to yield head bolts.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAn essential upgrade for tuned and high boost engines, particularly those running hybrid turbos, increased boost pressure or ethanol based fuels, the ARP kit helps maintain a reliable head gasket seal under extreme cylinder pressures while reducing the risk of cylinder head lifting.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eIncreased Clamping Force:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Provides greater and more consistent clamping than OEM head bolts, helping maintain a reliable cylinder head seal under high boost and increased combustion pressures.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHigh-Strength ARP2000 Steel:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Manufactured from premium alloy steel and heat-treated to achieve a tensile strength of approximately 220,000 psi.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eAccurate \u0026amp; Consistent Preload:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e The stud design prevents the fastener itself from twisting during tightening, allowing more accurate torque readings and more even clamping across the cylinder head.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCompact 12-Point Nuts:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Supplied with compact 12-point nuts for excellent tool engagement and improved clearance around your engines valvetrain.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eEnhanced Fatigue Resistance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Threads are rolled after heat treatment for improved fatigue strength and greater resistance to thread damage compared with conventional cut-thread fasteners.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eIdeal for Tuned Engines:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Particularly suited to high performance engine builds running increased boost, upgraded turbochargers and other performance modifications.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eApplication:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e BMW S58 – BMW M2\/M3\/M4 G8x, X3M\/X4M F9x\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 201-4705\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMaterial:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e ARP2000\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTensile Strength:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 220,000 psi\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eNut Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 12-Point\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eKit Includes:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Head studs, parallel-ground washers, 12-point nuts and ARP Ultra-Torque assembly lubricant\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eInstallation\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor the best results, always follow the recommended ARP installation procedure, including the specified torque sequence and use of the supplied ARP Ultra-Torque assembly lubricant. Correct installation is essential to achieving the required fastener preload and ensuring maximum head gasket clamping performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eA worthwhile upgrade for any high performance S58 engine where increased cylinder pressures demand stronger and more reliable head clamping.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"ARP Bolts","offers":[{"title":"Default Title","offer_id":62604371001731,"sku":"201-4705","price":456.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/6684\/4690\/files\/eng_pl_ARP-208-4306-head-stud-kit-for-Honda-B20B-with-B16A-VTEC-head-2079_1_2048x2048_5c199bc8-7eb6-4daa-8df3-52a31c9c8bc3.jpg?v=1708513992","url":"https:\/\/jxlperformance.co.uk\/it\/products\/arp-head-stud-kit-bmw-m2-m3-m4-g8x-s58-201-4705","provider":"JXL Performance","version":"1.0","type":"link"}