K&N Free-Flow Replacement Air Filter - BMW 2007-2013 135i/335i (Compatible w/ Dinan Intake and Stock Air Box - E82/E88/E90/E92/E93) MSRP: $97.00
Dinan Replacement Filter for High Flow Carbon Fiber Intake - 2014-2020 BMW M3/M4/MINI Cooper - F54/F56/F60/F80/F82 MSRP: $98.00
