Rear suspension arms on 356 thru 356B cars have this round rubber donut on both the inner and outer sides of the rear suspension arms; you need 4 pieces per car. Our rubber donuts are molded from a special durometer material insuring a good ride and to last many years.

For the later T-6 and 356C cars, a ribbed rubber donut is used on the outer side. See 644 333 131 01.