The MGA With An Attitude
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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 LWZ203 TC.C.1 23 Washer for screw (spring) (6) -(fill-neck, head.tank, cooling system, Twin Cam) -#10 medium spring split lockwasher ARH1022 15.C.1 Cap -filler -for radiator block -(cooling system, 1500) ARH1022 16.C.1 Cap -filler -(cooling system, 1600) -changed to ARH1039 Com.(C)71832- changed to ARH1542 Com.(C)88192 -always supply ARH1542 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) 
 The ARH1022pressure cap (4-psi) for the MGA 1500 and earlyTwin Cam was changed to ARH1039 (7-psi) in mid 1600 production, and changed again to AEH1542(7-psi) for later 1600 and Twin Cam cars. By factory recommendation, always use 7-psi pressure cap for all MGA. Later production TwinCam cars were fit with a remote pressure relief valve mounted on the body, at which time the cp on the header tank was changed to a blanking cap. For more informaton on MGA coolant pressure caps, see CO-126 |
