Tru-Power Engine Kit for 4-Cylinder 119.7 CID gas engine, 3-3/16 inch standard bore. Thin (.040 inch) wall sleeve. Engine overhaul kit contains .040 inch sleeves, 3-ring pistons, rings, pin & retainers, pin bushings, complete gasket set, intake & exhaust valves, valve springs & retainers, guides & retainers, valve keys. For 9N, 2N, 8N Tractors.Contains: 4-21A6207A3 pin bushing, 8-40-6512 retainer, 16-7HA6518 valve lock, 4-8BA6507A intake valve, 8-8BA6510B valve guide, 8-8BA6514 ret valve spring, 1-8N6008M gasket kit, 4-8N6505A exhaust valve, 8-8N6513 valve spring, 4-SAT3G1 FD cyl slv set.