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This Rebuilt basic long block was build using IPD PARTS and was rebuilt to save our customers on downtime & increase quality. Using a 1 piece piston for more durability, this long block is able to handle higher horsepower builds vs a stock 6nz. With the major castings covered and the front gears timed, this long block is easy to transfer over your current engine parts to get your 6NZ engine back up and running in no time! THIS LONG BLOCK WORKS FOR ESN: 6NZ CAT C15 MODEL: LONG BLOCK BUILT WITH the UPGRADED SPC15W KIT 1 PIECE PISTON KITS BASIC LONG BLOCK INCLUDES: -CYLINDER HEAD -CAMSHAFT -CYLINDER BLOCK -CRANKSHAFT -TIMED FRONT GEAR TRAIN -CONNECTING RODS -ALL OVERHAUL GASKETS This Long Block comes with a 1 year/ unlimited mileage warranty.