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The Omix piston is a direct replacement 4.2L piston sized at +0.030 inch overbore, sold individually and intended for full engine rebuilds. It includes the piston pin and replaces OE 8134441.030; use six pistons per engine when rebuilding a straight-six. Applications cover numerous Jeep and truck models from 1979–1990. Engine work may be required to install this part; it carries a limited five-year warranty.
Omix Piston 4.2L .030 79-90 Jeep CJ
