Fits GEN III, IV LSX (LS1 LS2 LS3 LS6 LS7) Chevy V8 Engines. LS1 LS2 LS3 LS6 LS7 WATER PUMP STUD KIT. Fits GEN III, IV LSX (4.8 5.3 6.0 6.2L Vortec) Truck Engines. You can't beat studs for the ease of removal and installation of gaskets, covers, pans, and other frequently accessed parts.