Pumps by Engine Model

Genuine Johnson Pump 10-24398-01.  Used on John Deere engine.  Mounting holes are in vertical orientation.  For details on mounting, look at the blueprint.  The 10-24398-01 mount flange is pictured on the upper left. 

Genuine Johnson Pump 10-24398-02.  Pump is used on John Deere.  Mounting holes are horizontal (perpendicular to water ports).  See the detailed blueprint where the 10-24398-02 mounting flange is pictured on lower left of the page.