Engine

Three YJ engines: AMC 2.5L (TBI 1987–90, MPI 1991–95), carbureted 4.2L 258 (1987–90), and the 4.0L 242 (1991–95, some late 1990). Long blocks, intakes, and accessories are not interchangeable across those families. See the engine spec guide for horsepower and years.