Up for sale is a high quality engine overhaul gasket set manufactured by Federal Mogul that fits Isuzu 4JA1 4JA1T engines. It is an aftermarket replacement for Isuzu P/N 5-87813-004-0. When replacing the seals and gaskets of your engine, only the best parts should be used. Cheap parts sold with neutral packaging by some sellers have unknown quality and reliability, hence could break within just few months of use. This set contains full set of guaranteed high quality gaskets and seals needed to rebuild your engine.