This is a cylinder head off of a 2007 Isuzu NPR HD flatbed truck. The engine is a model 4HK1-TC which is a four cylinder turbo charged diesel engine. This cylinder head was leaking past its injector sleeves causing the truck to push coolant out of its coolant reservoir. We performed a complete valve job and surface. We also removed the old injector sleeves and installed four new bronze injector sleeves. After we were all done rebuilding the cylinder head we put it through a rigorous pressure test to make sure it doesn’t leak past its new injector sleeves. For all your cylinder head rebuilding needs we are your one stop Las Vegas machine shop. Motor Mission Machine & Radiator 5435 Desert Point Dr. Las Vegas, Nv. 89118 Phone: (702) 649-2366 or (702) 649-0648 Fax: (702) 649-4133 www.MotorMission.com Facebook.com/MotorMission