ImpellerPump:F98Material:Neoprene (for cooling)Outer Diameter:3.74"Inner Diameter:SplinesWidth:7.09"A worn or damaged impeller can cause system failure or engine breakdown. SPX&';s Johnson Pump brand impellers are developed and manufactured for maximum flow and long life. With a genuine spare impeller you can also be sure that you are getting the quality required by engine manufacturers and professionals. table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Truck Freight: No Oversized: No Owners Manual Url: https://productimageserver.com/literature/ownersManual/48921OM.pdf