Part without green cover
Aftrmarket quality air filter and pre-filter.
Air filter replaces Kohler 17 083 03-s, 17 083 21-s
Pre-filter replaces Kohler 17 083 15-S
Air Filter + Pre-Filter Combo Part Number is 17 883 03-s1
ID: 1-5/8, "OD: 3," Height: 4-3 / 8 "