Specification:Item Type: M8 1., 25 Threaded Turbo Studs KitMaterial: Metal alloyThread Size: Approx., 8mm/0., 31in, M8PackageList:8 x Stud8 x Nut Piping & Piping Kits,8 Pcs M8 1.25 Threaded Turbo Studs Kit 8Mm Metal Alloy High Pressure Manifold Stud Bolt Nut Hardware A titanium 10mm 12-point nut and washer are included. StudPro Titanium Manifold To Turbo Stud Kit Mack E7 Turbo Stud Kit : OEM 616GC245M3 | EKT0302 Dorman® 03411HP - Carbon Fiber Exhaust Manifold Hardware Kit Important Parameter: The thread size of this manifold stud bolt kit is M8, 8mm, machined to ensure accurate thread engagement. SpeedFactory Titanium studs are made of Ti 6Al-4V and incorporate a 3mm hex key tip that allows them to be easily installed using an Allen wrench. 1., Function: The manifold hardware kit is used to fasten turbo and manifolds under high heat and stressure working conditions., 2., High Performance: the best performance of the turbocharger, improve engine efficiency, play a fixed role, reduce jitter and reduce noise., 3., Important Parameter: The thread size of this manifold stud bolt kit is M8, 8mm, machined to ensure accurate thread engagement., 4., Direct Replacement: This manifold hardware kit matches the original hardware required to secure the manifold to the engine on cars., 5., Fine Workmanship: Professional manufactured, exquisite workmanship with unique design, ensure stable performance and high reliability. Function: The manifold hardware kit is used to fasten turbo and manifolds under high heat and stressure working conditions. x 1 SpeedFactory Titanium M8 Washer -M8x1.25mm thread pitch fits many popular applications for intake and exhaust manifolds