Fitment: Fuel pump assembly for Chevrolet Silverado 1500 4.3L V6 1999-2004, Silverado 1500 4.8L V8/5.3L V8 1999-2003, Silverado 1500 1500HD 6.0L V8 2003. Fitment: Fuel pump assembly for Chevy Silverado 2500 5.3L V8 1999-2000, Silverado 2500 6.0L V8 1999-2003, Silverado 2500HD 3500 6.0L V8/8.1L V8 2001-2003. Fitment: Fuel pump assembly for GMC Sierra 1500 4.3L V6 1999-2004, Sierra 1500 4.8L-V8/5.3L-V8 1999-2003, Sierra 1500 1500HD 6.0L V8 2001-2003. Fitment: Fuel pump assembly for GMC Sierra 2500 5.3L V8 1999-2000, Sierra 2500 6.0L V8 1999-2003. For GMC Sierra 2500HD 3500 6.0L V8/8.1L V8 2001-2003. OE part replacement: Replace for OE part number 19153711, 19177272, 19369913, 19369915, 19121626, 19331263, MU1613, E3500M, SP6086M, 150003-A, 2630311, 25176865, 25345026, 88965373, 953-0011, F2511A, FG0053, EFG0407, MU1757, FG0316, EFG0316, PN3087, P74835M, FPA61984. Package includes:1.Fuel Pump; 2.Sending unit; 3. Seal Ring; 4.Wiring Harness; 5.Wire Connector*4; 6.Float; 7.Pressure sensor. Notes: This fuel pump assembly comes with pressure sensor. Because your vehicle’s original connector is prone to failure due to corrosion, cracking, loose pin housings, and wire crimp issues, the OE manufacturer has changed the shape of the connector, requiring the install of a new electrical connector. You need to replace the external harness connector or you could choose to swap the old connector. The installation of auto parts requires professional and qualified mechanics. It is highly recommended to find a local mechanic to help you install the parts to avoid losses caused by improper installation OE part replacement: Replace for OE part number 19153711, 19177272, 19369913, 19369915, 19121626, 19331263, MU1613, E3500M, SP6086M, 150003-A, 2630311, 25176865, 25345026, 88965373, 953-0011, F2511A, FG0053, EFG0407, MU1757, FG0316, EFG0316, PN3087, P74835M, FPA61984. Notes: This fuel pump assembly comes with pressure sensor. Because your vehicle’s original connector is prone to failure due to corrosion, cracking, loose pin housings, and wire crimp issues, the OE manufacturer has changed the shape of the connector, requiring the install of a new electrical connector. You need to replace the external harness connector or you could choose to swap the old connector.