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    1979 Dodge/Ram Truck W300 1 ton P/U 4WD 5.9L 4BL 8cyl

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    Master Cylinder Cap

    Master Cylinder Cap Operation:

    The top cover for the brake or clutch fluid reservoir that contains a rubber seal on the underside of the cap to prevent fluid loss and moisture contamination. The cap may be plastic or metal, round, square or rectangle and is held in place by threads, wire bail or bolts.

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