Ø 33 mm. Sorting box with 2 shims each 3.25 mm to 4.90 mm68 piecesFiat 124 Coupe/SpiderFiat 124 Special/Special TFiat 125 Berlina/SpecialFiat 128Fiat 130Fiat 131Fiat 132Fiat Dino 2400Fiat X 1/9Ferrari (2-valve engines)etc. OE: 4204141 - 4204142 - 4204143 - 4204144 - 4204145 - 4152449 - 4152450 - 4152451 - 4152452 - 4152453