This is the inner cylinder for many of the Meyer H pumps. These get pitted and rip up the packing cup. If yours is not perfectly smooth inside, replace it. The Meyer part # is 15205. The H pumps are 2" taller than standard. They are used on Diamond plows, Meyer MDII and Plus mounts.
If you have a non H model pump, that is a 6" stroke and you would need part # 15207.
The inside diameter is 1-3/4" and the length is 9-3/16"
This ram was used in these pumps: E-47H, E-46H, E-45H, U13H, E60H, E-57H, E-58H, E-50H, V-66, E61H, E68, E78 and E88.
Make sure you also pick up a basic seal kit, the Genuine Meyer fluid you need and the Meyer yellow paint to do a proper rebuild. If you are doing this yourself, below we have links to the service manuals to walk you through the rebuild.
E-47, E-46 complete Service Rebuild Manual
E-47, E-46 Parts Break Down
E-47H, E-46H Parts Break Down
E-58, E68, E-78, E88 Shop/ Repair Manual
E-58, E-68, E-78, E-88 Parts Break down