LAST ONE. New long tube and insulation. New short elbow. New long rubber connector Fits 5-Cylinder turbo Diesel engines 1981-1984 with air filter mounted on the engine / without trap oxidizer. See pictures
We would speculate that well over half of these oil cooler thermostats are no longer working on these old 77 to 85 Diesel engines, but it is possible to test them in a carefully controlled environment.