ADAPTER-TOOTH 3K6781 - Caterpillar

3500 And 3500B Diesel Commercial Engines Equipped With A 1W-2963 Oil Filter Housing Assembly And A 2W-9299 Oil Filter Housing CoverThe 161-3995 Oil Filter Spring Group is available to increase the seating force on the oil filter elements. This increased force will help prevent the filter elements from being unseated. An unseated filter element may allow unfiltered oil to bypass the filter element.
Cold starts with engines using a straight weight lube oil could create a lube oil pressure spike that could unseat the lube oil filter elements. Dimensional tolerances of competitive oil filters or non genuine parts could also result in improper retention of the oil filter elements.
The 161-3995 Oil Filter Spring Group includes a spring, retainer, stopper assembly, and installation instructions. This spring group can be added to any 3500 And 3500B Diesel Commercial Engine equipped with a 1W-2963 Oil Filter Housing Assembly and a 2W-9299 Oil Filter Housing Cover. This spring group can easily be installed during a normal oil filter element change.