Fuel pump sending unit rubber seal gasket Fits most Polaris EFI Models Installs just like the stock unit under plastic retaining cap Size is approximately 3.8" OD and 3.2" ID. Please Read Full Product Description Below To Check Fitment. Gasket only, sold individually This EFI fuel pump sending unit rubber seal gasket is designed for select Polaris EFI models that use the large black threaded retaining cap on the fuel pump assembly. The gasket installs beneath the plastic threaded cap and helps maintain a proper seal at the fuel tank opening. Manufactured to match OEM dimensions, this seal measures approximately 3.8 inches outer diameter and 3.2 inches inner diameter. This listing includes the rubber gasket only; no cap or fuel pump components are included. Verify cap style and dimensions prior to ordering to ensure correct fitment. Sold individually.