Sure looking at the photo below, They all protect the engine from getting water splashed on it. The old timers would throw them away early, makes for servicing the engine a giant PIA!
1) Passenger side, Fender apron, riveted to the fender
2) Drivers side , Fender apron, riveted to the fender
3) Center Splash guard, bolts to No. 4 and No 5, sits under the front bottom crankshaft pully
4) Passenger side, Splash guard, bolts to the edge of the fender. Notice the holes for the fuel filter bowl and the exhaust pipe.
5) Driver side, splash guard, bolts to the edge of the fender (I think, memory is bad, will confirm)