{"product_id":"arp-bmw-b58-ca625-head-stud-kit","title":"ARP CA625+ Head Stud Kit - BMW B58","description":"\u003cp\u003eThe ARP 401-4701 head stud kit is listed for BMW B58. The fasteners secure the cylinder head to the block; their application, installed length and preload must work with the chosen head and gasket arrangement.\u003c\/p\u003e\u003ch3\u003eTechnical Highlights\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number: 401-4701\u003c\/li\u003e\n\u003cli\u003eApplication\/configuration: BMW B58\u003c\/li\u003e\n\u003cli\u003eMaterial: Custom Age 625+\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eCustom Age 625+ combines high strength and fatigue resistance with resistance to atmospheric corrosion and oxidation. It is a material specification, rather than a guaranteed power or boost rating for the assembled engine.\u003c\/p\u003e\u003ch3\u003eSelection Guidance\u003c\/h3\u003e\u003cp\u003eFastener preload supplies the clamping force at the head-to-block joint. Gasket sealing also depends on suitable deck finish, component condition and the correct assembly procedure.\u003c\/p\u003e\u003cp\u003eMatch the engine and any specified aftermarket cylinder heads or block to the listed configuration. Do not assume that related engines use the same fastener dimensions.\u003c\/p\u003e\u003ch3\u003eInstallation Considerations\u003c\/h3\u003e\u003cp\u003eTrial-fit the assembly and check gasket surface requirements. Install studs hand tight. Keep washer seating surfaces dry, with the stamped washer face against the cylinder head. Apply ARP Ultra-Torque to the stud threads and underside of the nuts, following the kit-specific tightening procedure.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":68119384162554,"sku":"ARP401-4701","price":822.29,"currency_code":"USD","in_stock":true}],"url":"https:\/\/lgcracing.com\/products\/arp-bmw-b58-ca625-head-stud-kit","provider":"Legacy Racing","version":"1.0","type":"link"}