Fuel Injection Pressure Regulator. The engine types may include 2.8L 173Cu. V6 GAS OHV Naturally Aspir ated,2.8L 2827CC V6 GAS OHV Naturally Aspirated,3.1L 189Cu. V6 GAS OHV Naturally Aspirated,4.1L 250Cu.
Good quality fuel pressure regulator repair kit for GM TBI. Spring was shorter and heavier gauge than another I have but spring pressure tested within limits using a calibrated scale.
What can I say? It worked great for my 1990 Chevrolet Silverado 1500! It came packaged exactly as it appears and I had no problems with installation and I am driving my old truck around as I do everyday other day. Good quality and good performance at an affordable price!