Pressure Cap, 4 LB PSI, will not work with short filler neck. IH: SUPER A, C, SUPER C, H, Super H, HV, Super HV, M, Super M, MD, Super MD, MTA, Super MTA, MV, Super MV, W4, O4, OS4, I4, W6, Super W6, WD6, Super WD6, O6, OS6, I6, W9, Super W9, WD9, Super WD9, I9, W400, W450, 100, 130, 140, 200, 230, 330, 400, 450, 600, 650.
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