The Grizzly Air GA107 EGR Cooler provides your 5.9L Cummins (OE# 4089256NX) with proper function. Grizzly Air components are manufactured from high-quality components for a long life and factory-like performance. A failed EGR cooler can block coolant flow causing engine damage and overheating. Each Grizzly Component is designed as a bolt-on replacement.
This product is not legal for sale or street use in California. Certain aftermarket products are subject to governmental emission standards regulated by the California Air Resources Board. In order for these products to be legal on a specific vehicle in California, the part number must receive a CARB Executive Order (EO) number. This number makes the part legal for use only on specific years, makes and models of vehicles. A decal with CARB EO number for these parts must be displayed in the engine bay to satisfy smog inspection requirements.