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

This kit contains four finely engineered brass exhaust stud nuts compatible with numerous engine models, including the Continental O-520 series (A, B, BA, BB, C, CB, D, E, F, J, K, M, MB) and IO-550 series (A, B, C, D, E, F, G, L, N, P, R).