Fitments: The fuel pump is fit for 1996 1997 Chevy C1500 C2500 C3500 K1500 K2500 K3500 V6 V8 4.3L 5.0L 5.7L 7.4L.Please double check the fitment before your purchase. Interchange #: The fuel pump is designed and manufactured with OE standrd and can be replaced directly for the Airtex E3622S, XL3Z 9H307-BB, PFS105, 950-0172 Warranty: This fuel pump has one year/ 365 days unlimited mileage warranty. For any doubts for the products, you can contact us freely. We will reply within 24 hours. Function: This electric sending unit is installed in the fuel tank and send the gas to the engine. Solid Quality: Every unit is tested before shipped.You can install the part directly.