Est Top-End Gasket Set, 4 1/8 Big Bore For Harley-Davidson

.030" HEAD & .020" BASE GASKETS; WITH 99-04 VALVE STEM SEALS & 99-10 STYLE BREATHERS Fits: 99-17 TCA/B with 4 1/8" bore (excl. Twin Cooled) (NU) Units: 1