PAI Cummins 12 Valve Engine Overhaul Kit 89-90 Non IntercooledPAI Cummins 12 Valve Engine Overhaul Kit 89 90 Non Intercooled This PAI Cummins 12 Valve Engine Kit 89 90 is made up of OE quality components and comes with a 2 year warranty from the manufacturer. It has the necessary parts for a 89 90 Cummins ISB 12 Valve Non Intercooled engine rebuild. Features: Full Set of Std Rod Bearings Full Set of Std Size Main Bearings 6 Pistons Complete W Rings, Wrist Pins and Clips (Available in Std, . 020, . 040) Upper