The Screw,tappin,5x40 is the most widely applied product in the PK50M WALLAROO 1991 (M) BELGIUM / SEL AIR CLEANER ( four times ).
A sample from the products for the Air Cleaner include: Sub Cleaner Assy., Screw,tapping, Bolt,hex.,6x18, Washer,plain,6mm.
The Air Cleaner is made up of components including this Element Air/c which is the most expensive.