You can find parts many places including eBay. But most aftermarket parts aren't good. For example I haven't found any aftermarket pistons and liners which are graded for fit.Ok, Where can a person buy parts to rebuild their 4bd1t other than a dealer? I'm talking about gaskets, seals, bearings, oil pump, valves and other replaceable items! I am new at this Isuzu game and would like some options before I tear into mine!