Replaces

Fuel Pump & Sending Unit Module ACDelco MU1745 - ACFPU00003

Description
Warranty & Shipping
How-To & Tools
Product Reviews
Q&A
Vehicle Fit

AC DELCO Fuel Pump Module & Sending Unit: MU1745

This replacement electric fuel pump module assembly is just what you need to get your vehicle in good working order again!

Specifications:

  • Mounts in fuel tank
  • Complete module assembly
  • Assembly includes the following parts:
    • Electric Fuel Pump
    • Plastic module
    • Fuel sending unit
      • Rheostat Range: 40-250 Ohms
    • Float
    • Strainer
  • Number of outlets: 3
  • Correct electrical connections
  • Replaces dealer part number: 25314321
  • Built to strict quality control standards
  • Correct for models without Low Lubricity Fuel System (RPO K55)
  • Does not fit models with California Emissions

Note: If your vehicle requires a match to an RPO (Regular Production Option) code, you can usually find it on your original window sticker and sometimes either on the inside of your glove box door or the front, driver's side door shell

This electric fuel pump module assembly with sending unit makes a great replacement and has good cost savings over a dealer assembly.

Our electrical and electronic parts are subject to strict quality control testing. Please ensure proper diagnosis of this item before purchasing as the item cannot be returned once installed or plugged in.

Item Condition: New

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

  1. step : Disconnecting the Fuel Hoses (0:41)
    • Lift and secure the vehicle
    • Loosen the two hose clamps with an 8mm socket and ratchet
    • Pull the hoses free, using a pry bar if necessary
  2. step : Removing the Fuel Tank Straps (1:41)
    • Support the fuel tank with a jack stand
    • Remove the 15mm bolt from each fuel tank strap
    • Pull off the fuel tank straps
  3. step : Removing the Fuel Tank (2:39)
    • Have an assistant hold one end of the tank
    • Lower the jack
    • Pull the top hose free from its bracket
    • Disconnect the rear hose from the fuel tank
    • Disconnect the rear hose from its brackets
    • Disconnect the fuel pump wiring harnesses
    • Disconnect the fuel pump hoses with pliers
    • Pull the front hoses out of the gas tank
    • Pull the fuel pump hoses out of their brackets
    • Tape over the holes in the fuel tank
    • Lower the fuel tank with the help of an assistant
    • Disconnect the top hose from the fuel tank
    • If the gas tank is too heavy, pour the gas into an appropriate container
  4. step : Removing the Fuel Pump (5:25)
    • Loosen the fuel pump ring with a hammer and screwdriver
    • Pull of the fuel pump ring
    • Pull the fuel pump out of the tank
    • Pour any gas inside the pump into the tank
  5. step : Installing the New Fuel Pump (6:12)
    • Push the float arm onto the new fuel pump
    • Slide the fuel pump hose clips off the old fuel pump with a flat blade screwdriver
    • Slide the fuel pump hose clips onto the new fuel pump with a flat blade screwdriver
    • Put the new fuel pump into the tank
    • Put the fuel pump ring into place
    • Lock the ring into place with a hammer and screwdriver
  6. step : Reinstalling the Fuel Tank (7:14)
    • Lift the fuel tank into place, front first, with the help of an assistant
    • Reconnect the front fuel tank hose
    • Clip the front hose into its bracket
    • Push the rear of the tank up partially
    • Support the tank with the jack
    • Connect the fuel pump hoses
    • Reconnect the fuel pump wiring harnesses
    • Clip the fuel pump hoses into their brackets
    • Connect the rear hose
    • Push the rear hose into its brackets
    • Raise the tank the rest of the way up with the jack
    • Remove the tape from the tank
    • Reconnect the two upper hoses
    • Tighten the two hose clamps with an 8mm socket and ratchet
  7. step : Installing the New Fuel Tank Straps (11:05)
    • Hang the new fuel tank straps in their brackets
    • Insert the 15mm bolt into each fuel tank strap

Tools needed for replacement:

    General Tools

  • Floor Jack
  • Assistant
  • Jack Stands
  • Hammer

  • Materials, Fluids, and Supplies

  • Electrical Tape

  • Pliers, Cutters & misc Wrenches

  • Needle nose pliers

  • Ratchets & Related

  • Ratchet
  • Socket Extensions

  • Screwdrivers & Related

  • Pry Bar
  • Flat Blade Screwdriver

  • Sockets - Metric

  • 8mm Socket
  • 15mm Socket

5.00/ 5.0
1review
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Everything worked as advertised.Using all new parts makes the job much easier.The price was right.
February 13, 2017
Will this fit my car? Add a vehicle to make sure
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
Will a mu1613 swap out with a mu1745 fuel pump?
Wayne B February 19, 2016
I am not seeing anywhere that these part numbers are connected. Our parts are designed to be exact replacements for what came with the vehicle, so as long as your year, make, model, and specifications match up with our listing, these will definitely fit and function just like the original. Please let us know if you have any other questions.
Derek C February 22, 2016
Year Make Model Description
1997-1998Chevy C1500 Truck Chevy C1500 Truck Fuel Pump & Sending Unit Module V6 4.3L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998Chevy C1500 Truck Chevy C1500 Truck Fuel Pump & Sending Unit Module V8 5.0L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998-1999Chevy C1500 Truck Chevy C1500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999Chevy C1500 Truck Chevy C1500 Truck Fuel Pump & Sending Unit Module V8 5.0L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998Chevy C2500 Truck Chevy C2500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998Chevy C2500 Truck Chevy C2500 Truck Fuel Pump & Sending Unit Module V8 5.0L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998Chevy C2500 Truck Chevy C2500 Truck Fuel Pump & Sending Unit Module V8 7.4L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000Chevy C2500 Truck Chevy C2500 Truck Fuel Pump & Sending Unit Module V8 6.5L with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000Chevy C2500 Truck Chevy C2500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000Chevy C2500 Truck Chevy C2500 Truck Fuel Pump & Sending Unit Module V8 7.4L with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998Chevy C3500 Truck Chevy C3500 Truck Fuel Pump & Sending Unit Module V8 7.4L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998Chevy C3500 Truck Chevy C3500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000Chevy C3500 Truck Chevy C3500 Truck Fuel Pump & Sending Unit Module for Main Tank for Models with Gas Engine with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1997-1998Chevy K1500 Truck Chevy K1500 Truck Fuel Pump & Sending Unit Module V6 4.3L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998-1999Chevy K1500 Truck Chevy K1500 Truck Fuel Pump & Sending Unit Module V8 5.0L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998-1999Chevy K1500 Truck Chevy K1500 Truck Fuel Pump & Sending Unit Module V8 5.0L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998-1999Chevy K1500 Truck Chevy K1500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998Chevy K2500 Truck Chevy K2500 Truck Fuel Pump & Sending Unit Module V8 5.0L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998Chevy K2500 Truck Chevy K2500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998Chevy K2500 Truck Chevy K2500 Truck Fuel Pump & Sending Unit Module V8 7.4L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000Chevy K2500 Truck Chevy K2500 Truck Fuel Pump & Sending Unit Module V8 7.4L with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000Chevy K2500 Truck Chevy K2500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000Chevy K2500 Truck Chevy K2500 Truck Fuel Pump & Sending Unit Module V8 6.5L with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1997-1998GMC C1500 Truck GMC C1500 Truck Fuel Pump & Sending Unit Module V6 4.3L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998-1999GMC C1500 Truck GMC C1500 Truck Fuel Pump & Sending Unit Module V8 5.0L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998-1999GMC C1500 Truck GMC C1500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998GMC C2500 Truck GMC C2500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998GMC C2500 Truck GMC C2500 Truck Fuel Pump & Sending Unit Module V8 7.4L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998GMC C2500 Truck GMC C2500 Truck Fuel Pump & Sending Unit Module V8 5.0L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000GMC C2500 Truck GMC C2500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000GMC C2500 Truck GMC C2500 Truck Fuel Pump & Sending Unit Module V8 6.5L with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000GMC C2500 Truck GMC C2500 Truck Fuel Pump & Sending Unit Module V8 7.4L with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998GMC C3500 Truck GMC C3500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998GMC C3500 Truck GMC C3500 Truck Fuel Pump & Sending Unit Module V8 7.4L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000GMC C3500 Truck GMC C3500 Truck Fuel Pump & Sending Unit Module for Main Tank for Models with Gas Engine with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1997-1998GMC K1500 Truck GMC K1500 Truck Fuel Pump & Sending Unit Module V6 4.3L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998-1999GMC K1500 Truck GMC K1500 Truck Fuel Pump & Sending Unit Module V8 5.0L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998-1999GMC K1500 Truck GMC K1500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998GMC K2500 Truck GMC K2500 Truck Fuel Pump & Sending Unit Module V8 7.4L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998GMC K2500 Truck GMC K2500 Truck Fuel Pump & Sending Unit Module V8 5.0L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998GMC K2500 Truck GMC K2500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000GMC K2500 Truck GMC K2500 Truck Fuel Pump & Sending Unit Module V8 6.5L with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000GMC K2500 Truck GMC K2500 Truck Fuel Pump & Sending Unit Module V8 7.4L with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000GMC K2500 Truck GMC K2500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998GMC K3500 Truck GMC K3500 Truck Fuel Pump & Sending Unit Module V8 5.7L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1998GMC K3500 Truck GMC K3500 Truck Fuel Pump & Sending Unit Module V8 7.4L with Federal Emissions (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
1999-2000GMC K3500 Truck GMC K3500 Truck Fuel Pump & Sending Unit Module for Main Tank for Models with Gas Engine with Federal Emissions (excluding Cab & Chassis) (excluding RPO Code K55 (Low Lubricity Fuel Sender)) ACDelco MU1745
Only 1 left in stock
Part #: ACFPU00003


Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

AC DELCO
Brand #: MU1745

How-to Video:

(11:57 min)