Buy OEM Lexus Part # 871390E040 (87139-0E040, 8713948050). Cabin Air Filter. Cabin Air Filter - Repair or Replace If the air coming out of your vents smells a little funny—like mildew or funk—or

FILTER, CLEAN AIR

Cabin Air Filter - Repair or Replace
If the air coming out of your vents smells a little funny—like mildew or funk—or if your windshield fogs up with the A/C on, your Lexus may have a clogged cabin filter. Many manufacturers recommend replacing the cabin filter, or pollen filter, as part of its scheduled maintenance.