Tru Power Engine Kit. 3-Cylinder Diesel, 164 CID. 4.02 inch standard bore. 3-ring piston, Keystone top compression ring, no grooves on sleeve. Basic engine kit. Contains sleeves & sleeve seals, pistons & rings, pins & retainers, pin bushings, standard rod and main bearings, complete gasket set, crankshaft seals. Check length and add rod bolts TP-R74194 (2.125”) or TP-R80033 (2.325”). For 1520 Series.