MAHLE Original GS33579 Fuel Injection Nozzle O-Ring, 1 Pack All MAHLE Original gaskets meet or exceed the original equipment specifications providing the finest sealing products available MAHLE Original gaskets utilizes OE equivalent or better materials in all our gaskets Cylinder head bolt set (GS) contains the head bolts necessary to replace one cylinder head. Torque-to-yield bolts cannot be reused, new fasteners ensure proper sealing load. The contents of MAHLE Original gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package