BMW N63 Cut Ring Head Gasket Set by Athena-SCE

Designed specifically for the BMW N63 V8 engine to replace BMW part numbers 11127567764 and 11127567765 of the F10/F11/F12/F13/F14/F15/F16/F01/F02 chassis. Sold as a set - Includes Bank 1 and Bank 2 Gaskets Factory OEM and MLS head gaskets are only engineered to handle a limited amount of cylinder pressures before they start to leak, causing a range of issues, including engine overheating, loss of power, misfires, and in severe cases, catastrophic engine failure. Athena-SCE Cut Ring Head Gaskets are uniquely designed to handle increased cylinder pressure caused by power modifications, making them the recommended choice for applications making 12+ psi. Design: Athena-SCE's gasket body is composed of Motorgasket, a reinforced material developed by Athena's R&D department. This consists of a steel core covered with two layers of asbestos-free aramid fibre and offers excellent thermal and mechanical resistance without compromising its ability to adapt to mating surfaces. To ensure maximum sealing under all conditions, a silicone bead is also applied to critical sealing areas, such as oil and coolant passages.  The AISI 304 stainless steel cooper rings bite into the aluminum head, providing maximum sealing around the cylinder bore and optimizing engine performance, even on engines with nitrous and/or turbo applications that exceed 2 bar boost. Please be aware that the gasket should be 0.5mm to 1mm larger than the piston. For example, if the piston measures 84mm, then the gasket should be the next size up, either 84.5mm or 85mm. Installation instructions: Make sure that the engine block and cylinder head surfaces are clean, flat, and free from any debris, oil, or coolant. Install the Cut Ring gasket on the engine block and ensure that it is properly aligned. Avoid twisting or bending the gasket during installation. Place the cylinder head on top of the gasket and install the head bolts or studs in their correct positions. Follow the manufacturer's recommended torque specifications and tighten the bolts or studs in the proper sequence to ensure even clamping force across the gasket. After the initial tightening, re-torque the head bolts or studs after the engine has been started and then allowed to cool to room temperature. This will ensure that the gasket is properly seated and compressed. It is recommended to not use any additional sealant on the gasket; it is already coated with a silicone bead sealant. Using additional sealant can affect the performance of the gasket. Notes on Preparation and Installation: Before installation, it is crucial to have the mating surfaces of both the cylinder head and the block professionally cleaned and resurfaced to ensure they are completely flat/straight. It is the responsibility of the engine builder to measure each cooper ring height and verify uniformity across all rings.  After initial assembly, it is necessary to allow the engine to complete a full heat cycle, then re-torque your head studs to spec. This means allowing the engine to warm up to its normal operating temperature, remain at operating temperature for several minutes to ensure each component is uniformly heated, then turned off and cooled completely to ambient temperature. BMW N63 Applications: BMW 5 Series 2010–2017     BMW F07      550i 2011–2016     BMW F10      550i BMW 6 Series 2012–2018     BMW F06     650i 2012–2018     BMW F12     650i     2012–2018     BMW F13     650i BMW 7 Series 2009–2015     BMW F01/F02     750i/750Li BMW X5 Series 2014–2018     BMW F15     X5 xDrive50i BMW X6 Series 2015–2019     BMW F16     X6 xDrive50i Alpina B5 Series 2011–2016     BMW F10 Alpina     B5 Bi-Turbo Alpina B6 Series 2012–2018     BMW F06/F12/F13 Alpina     B6 Bi-Turbo Alpina B7 Series 2010–2015     BMW F01 Alpina     B7 Bi-Turbo