Air filter 80mm.

Air filter 100mm.

Air filter round 219 long 127 hole 85mm.

The Westerbeke Air Filter WB-039705 can be used for the following generator and engine models:

4.0 BCDBR 50 Hz, 5.0 BCDBR
9.2 BTD 50 Hz, 10.4 BTD 50 Hz, 11.5 BTD, 12.6 BTD
6.0 BTDA 50 Hz, 7.5 BTDA 50 Hz, 8.0 BTDA, 9.4 BTDA 50 Hz,…