Continental Exhaust Stud IO-520 & IO-550 (Airboat)

This Continental Exhaust Stud is designed to fit a variety of engine models, including the                                                                 IO-520 series (A, B, BA, BB, C, CB, D, E, F, J, K, M, MB),                                                      IO-550 series (A, B, C, D, E, F, G, L, N, P, R).