0551536 Piston Assembly
***NOTE: For owners of Titan Advantage 400 and 500 machines - please be aware that these models were made with 2 possible piston designs. This Piston Assembly is for the machines with the piston that has a Dowel-Pin design. Some Titan machines were made with a T-shaped slot design piston. This piston assembly ***WILL NOT WORK*** in machines that came with the T-shaped piston.
For more information Click Here
For the replacement T-shaped piston See Here
0551536 Includes Item Number 26 (9-13) as shown below in the fluid section breakdown: