This is a genuine Exmark 109-4180 Hydro Spin On Bi-Directional Micron Filter
Fits Models: Explorer 1800 18hp, Explorer 18hp, Explorer 20hp, Lazer Z 52 inch, Lazer Z 60 inch, Lazer Z 60 inch Air Cooled, Lazer Z 60 inch Liquid Cooled, Lazer Z AS 52 inch, Lazer Z AS 60 inch, Lazer Z CT 44 inch, Lazer Z CT 48 inch, Lazer Z HP 44 inch, Lazer Z HP 46 inch, Lazer Z HP 52 inch, Navigator, Navigator 20hp, Navigator 27hp, Navigator 42 inch, Navigator 48 inch, Staris E-Series 32 inch, Staris E-Series 36 inch, Staris E-Series 44 inch, Staris S-Series 48 inch, Staris S-Series 52 inch, Staris S-Series 60 inch, Turf Ranger 18hp 52 inch, Turf Ranger 22hp 52 inch, Turf Ranger 23hp 52 inch, Turf Tracer HP Hydro 36 inch, Turf Tracer HP Hydro 36 inch ECS, Turf Tracer Hydro 14hp 52 inch, Turf Tracer Hydro 16hp 52 inch, Turf Tracer Hydro 18hp 52 inch, Turf Tracer Hydro 19hp 52 inch, Turf Tracer Hydro 20hp 52 inch, Turf Tracer Hydro 20hp ECS, Turf Tracer Hydro 23hp 52 inch, Turf Tracer Hydro 23hp ECS, Turf Tracer Hydro 23hp Pistol Grip, Turf Tracer S-Series 36 inch, Turf Tracer S-Series 36 inch Hydro ECS, Turf Tracer S-Series 48 inch, Turf Tracer S-Series 48 inch Hydro ECS, Turf Tracer S-Series 48 inch Propane, Turf Tracer S-Series 48 inch Propane ECS, Turf Tracer S-Series 48 inch Propane Hydro ECS, Turf Tracer S-Series 52 inch, Turf Tracer S-Series 52 inch Hydro ECS, Turf Tracer S-Series 52 inch Propane ECS, Turf Tracer X-Series 20hp Hydro ECS, Turf Tracer X-Series 21hp Hydro ECS, Turf Tracer X-Series 24hp Hydro ECS, Turf Tracer X-Series 24hp Propane Hydro ECS, Turf Tracer X-Series 52 inch Hydro ECS, Turf Tracer X-Series 52 inch Propane Hydro ECS, Turf Tracer X-Series 60 inch Hydro ECS, Turf Tracer X-Series 60 inch Hydro ECS Stand-On, Turf Tracer X-Series 60 inch Propane Hydro ECS, Turf Tracer X-Series Hydro ECS, Turf Tracer X-Series Propane Hydro ECS, Vantage 36 inch, Vantage 48 inch, Vantage 52 inch, Vantage 60 inch, Vantage S-Series 36 inch, Vantage S-Series 48 inch, Vantage S-Series 52 inch, Vantage S-Series 52 inch Propane, Vantage S-Series 60 inch, Vantage S-Series 60 inch Propane, Vantage X-Series 48 inch, Vantage X-Series 52 inch, Vantage X-Series 60 inch, Vertex S-Series 48 inch, Vertex S-Series 52 inch, Vertex S-Series 60, Vertex S-Series 60 inch, Viking Hydro 32 inch ECS, Viking Hydro 36 inch, Viking Hydro 36 inch ECS, Viking Hydro 48 inch ECS, Viking Hydro S-Series 36 inch, Viking Hydro S-Series 48 inch, Z-Turf