PART NO.  SPL.PAGE  DESCRIPTION                                                                
AEH593     TC.C.1    17 Tank -header -(cooling system, Twin Cam) -prior to E(131 always fit in
    additional part number AEH596 overflow pipe
ZCS0506    TC.C.1    18 Screw -tank to mounting bracket (6) -5/16-18-UNC x 3/4 hex head zinc
LWZ205     TC.C.1    19 Washer for screw (spring) (6) -Lock Washer Zinc 5/16 medium spring
AEH487     TC.C.1    20 Filler neck -(header tank, cooling system, Twin Cam)
AEH490     TC.C.1    21 Joint for filler neck -(header tank, cooling system, Twin Cam)
AEC362     TC.C.1    22 Screw for filler neck (6) -(header tank, cooling system, Twin Cam)-
    changed to PMZ0306 Com.(E)596 -always use PMZ0306 -Pan Head Zinc #10-32-UNF x 3/8
LWZ203     TC.C.1    23 Washer for screw (spring) (6) -(fill-neck, head.tank, cooling system,
    Twin Cam) -#10 medium spring split lockwasher
ARH1022    TC.C.1    24 Cap -header tank -(cooling system, Twin Cam) -changed to AHH5904-
    Com.(E)652 also 575, 613, 623, 633, 648
AEH482     TC.C.2    44 Hose -tank to thermostat housing -(cooling system, Twin Cam)
8G632      TC.C.2    45 Clip for hose (2) -(tank to thermostat housing, cooling system,
    Twin Cam) -was 2H3705
AEH575     TC.C.2    46 Bracket for header tank -(cooling system, Twin Cam)