Dinan High Flow Drop-in Replacement Air Filter - 2016-2023 BMW 530i/540i/640i/740i/840i/X3 M40i/X4 M40i/X5 40i/ X6 40i/X7 40i MSRP: $42.50
Dinan Replacement Air Filter for Dinan High Flow Intake - 2004-2010 BMW 545i/550i/645Ci/650i MSRP: $101.77