OEM Yamaha air filter and NGK Spark Plug for all years Yamaha generators.

Filters are Pre-oiled from the factory.

EF1600 EF2400 EF2600 YG2600 YG2800 YP20 YP30 using part number 

Filter measures 4 3/16" x 4 3/16" x 1 1/8" (107mm x 107mm x 30mm)