Keep your engine breathing easy with this essential M6x55 wing bolt designed specifically for X4 and X5 air filter assemblies. This precision-engineered fastener features a convenient wing-style head for tool-free installation and removal during routine maintenance. The 55mm length and M6 thread specification ensure a secure fit to properly anchor your air filter housing. Made to withstand engine vibration and environmental stresses, this durable wing bolt helps maintain the critical seal between your air filter and housing. Perfect for mechanics and DIY enthusiasts looking for an exact replacement part that matches original specifications. Skip the hassle of searching through generic hardware - this purpose-built wing bolt is sized and threaded specifically for X4/X5 applications.