Eco Engines, Inc in Woodbridge now offers the JASPER Re-manufactured Nissan VQ40DE 4.0L DOHC Engine!   Jasper Engines & Transmissions, the nation’s leader in re-manufactured products, announces the availability of its re-manufactured Nissan VQ40DE 4.0L engine.  This DOHC V6 engine is available on exchange for the following 2006-2011 vehicles:   Nissan Frontier, Pathfinder, X-terra offering several advantages: