Originally Posted by
Ernie W
John, The 954 parts book shows the air cleaner with a solid cover (1), and a second cover offered with screen (9) From the looks of the diagram the screen mesh is small. Note: if the wing nut is M6, the mesh looks smaller. The air filter cartridge (4) is 901.108.955.01 and is noted as a stock part. The parts book also lists 3 more air filters, all are noted as stock parts, 901.108.955.01, 901.108.955.02, and 901.108.955.03 (not shown in the diagram), but have the "ww" code, which means, by choice.