Buy Replacement parts for Caterpillar 4W6691 - FILTER ELEMENT AS-AIR at wholesale prices with easy payment and fast shipping options. Save up to 50% OFF OEM pricing. Compatible Machines:- BACKHOE LOADER- ENGINE - MACHINE Compatible Models:- 416B- 428B- 3054 Units Containing The Spare Part :- 4P-3334 AIR CLEANER GP (416B)