The ProMAXX Nico ProKit is precision engineered to facilitate the repair of the broken fuel injector hold down bolt in Ford 6.7L Power Stroke Diesel engines. As the Ford 6.7L engine ages, the fuel injector hold-down bolt corrodes due to moisture and heat duty cycles. Once this happens, the bolt may fracture when the technician attempts to remove and replace the fuel injector, turning a simple fuel injector replacement into a major repair problem.This tool turns a 35-hour repair into one hour by eliminating the need to remove the engine or cylinder head, according to the company. Simply bolt the Nico in place, machine the broken bolt and complete the repair. The Nico ProKit is made in the U.S.A.