{"product_id":"arp-head-studs-part-no-206-4206","title":"ARP cylinder head studs for BMC A-series 11 studs (for Shaved Head) - 206-4206","description":"\u003cp\u003eARP 206-4206 cylinder head studs are made for the BMC A-series 11-stud (for Shaved Head). Replacing the stock bolts with studs helps keep the head gasket sealed when the engine is running higher turbo pressure or higher compression.\u003c\/p\u003e\u003cp\u003eThey are manufactured from 8740 chromoly steel, heat-treated in-house by ARP to a tensile strength of approximately 190,000 psi. Each stud is centerless ground after heat treatment to ensure it is perfectly concentric, so that the gasket and cylinder head are aligned, and the threads are rolled after heat treatment, which ARP states increases their fatigue strength by twenty times.\u003c\/p\u003e\u003cp\u003eUse the ARP assembly lubricant and their torque values, because with any other lubricant the load received by each part is not the same. Not sure which version of your engine you have? Send us the code and we will confirm the part number for you.\u003c\/p\u003e","brand":"ARP","offers":[{"title":"Default Title","offer_id":53893716672846,"sku":"ARP-206-4206","price":165.36,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0816\/7329\/0062\/files\/206-4206.jpg?v=1790662646","url":"https:\/\/driftandgrip.com\/en\/products\/arp-head-studs-part-no-206-4206","provider":"Drift \u0026 Grip","version":"1.0","type":"link"}