Item description from the seller                                                                                                      
This Dorman vacuum pump, model 904-824, is a durable and reliable choice for your car or truck. It comes with a valve and two terminals, and is designed to fit select Chevrolet, GMC, and Isuzu models. The vacuum pump has a 0.15-inch inside diameter and a 0.163-inch vacuum port diameter, with a 3/16-inch vacuum pump inlet and a 1/4-inch vacuum pump outlet. This electrical vacuum pump is made with plastic housing material and features a barbed vacuum pump connector. It is compatible with