CAT Pumps OEM 48752 Ceramic M14 X 47 Plunger For 6DX, 66DX Pumps

66DX Parts List:

 https://www.catpumps.com/sites/default/files/2021-06/66DX30G1I_K_0.pdf

Parts List 6DX:

https://www.catpumps.com/sites/default/files/2020-10/6DX35G1I_A.pdf