This is the brand new redesigned Genuine Meyer OEM Top Cap15738 for the fluid tank / reservoir on Meyer E-46, E-47, E-57, E-58H, E-60 and E-68 (Standard and H Models) snow plow pumps. It includes the top wiper seal with BRASS INSERT THAT IS STANDARD NOW FROM MEYER. It also includes the Tank O Ring, and Guide Bushing. What the main change is, they made the fill port flush with the top, so it is easy to remove the Vent/Fill Plug. See additional images. They stopped making part# 15194. This actual part number is 15738C. The C means it comes in a clamshell package. If your unit is leaking out of the top, this part will NOT solve your problem. You need a Basic Seal Kit. You will make the leak worse installing this part without a Basic Seal Kit AND your plow may also not stay up, in addition to sucking in water under the nuts. If your Top cap is damaged, cracked, or needs to be replaced you WILL need a Basic Seal Kit to install THIS part properly. Click on the related Products tab to order a Basic Seal Kit. It is the O Ring under the Guide Bushing that makes the seal in the center. THAT is NOT included with the Top Cap. Scroll through all the images.