2 BALDWIN PT9556-MPG - Wire Supported Max. Perf. Glass Hydraulic Elements. 

Fits Caterpillar Equipment
Height 423.9 MM
Inside Diameter 1 98.4 MM
O-Ring [2] Attached
Outside Diameter 1 142.1 MM
Replaces "Caterpillar 179-9806, 179-9806X; Fleetguard HF35440"