WIX 42816 Engine Air Filter. OEM Interchange: LAF9543, P547332, RS3935, RS5304, RS5304, RS5335, WX 42816. Air filter Laboratory Tests per ISO 5011: Minimum efficiency of 99.9% contaminant removal. (Based on Wix 46664, Wix 42803, Wix 46761, Wix 46433 ).
