Today’s EPA emissions require a great deal of engineering, components, and assembly. Currently, Tucker Sno-Cat® offers Tier 4 Final Cummins 4.5 four cylinders. This engine is rated at 130 horsepower (H.P.) and is installed in our Model 2000XL The large engine option is the Cummins 6.7 Stage 5 emissions offering a 210 H.P. and 326 H.P. package. The 6.7 is used in all of our other models. The 326 H.P. is primarily used in our Tucker Trail Boss. The EPA regulation on today’s off road diesel engines are a North American standard. All new product produced and sold in the United States and Canada require these emissions.