Description:Cat brake pistons are a critical component in the brake system for Cat machine drive trains, allowing the machines to slow, stop, or hold a stationary position.Attributes:• Cast iron brake piston• Outside Diameter: 1072.3 mm (42.216 in)• Inside Diameter: 835.9 mm (32.909 in)• Width: 86.3 mm (3.397 in)• Thread Size: M10X1.5 (4 Places)Application:Brake pistons are used in Cat drive train braking systems. Consult your owner's manual or contact your local Cat Dealer for more information.