"COPPER FLASHED" EXHAUST MANIFOLD FLANGED WHIZZ NUTS. Skoda N90085001, Skoda 3U0253095E. These Nuts are copper flashed and are used on exhaust manifolds - they give excellent corrosion resistance. VW N90085001, VW 8A0253101G, VW 8A0253101AD, VW 893253209AB, VW 443253101DS.
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