Tru Power Engine Kit. 4-Cylinder Diesel, 239 CID. 4.19 inch Standard Bore. 3-Ring Piston. For Standard Compression Engines with Pistons Marked inchB inch. Engine Overhaul Kit, less bearings. Contains sleeves & sleeve seals, pistons & rings, pins & retainers, pin bushings, complete gasket set, crankshaft seals, intake & exhaust valves, springs, guides, retainers. Check length and add rod bolts TP-R74194 (2.125 inch) or TP-R80033 (2.325 inch). For 2750 Series, 2555 Series, 2755 Series.