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

.040" 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: KIT