ACFPU00003-Chevrolet GMC Fuel Pump & Sending Unit Assembly

Replaces

Chevrolet GMC Fuel Pump & Sending Unit Assembly ACDelco MU1745

ACFPU00003

This part replaces:

  • Hollander 323-01159
  • OE # 25314321
FREE SAME DAY SHIPPING
Save 24%
List: $378.95 Save: $90.00
Only 1 left in stock
Part ACFPU00003
In Stock


Orders must be placed by 2pm ET
Delivery options for:

Estimated Arrival Cost


Deliveries made to PO Boxes and FPO may take longer. See our Shipping & Delivery for more information.

AC DELCO
Brand #: MU1745

Frequently bought together

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

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 testing.

Parts cannot be returned after they have been installed. Contact us with any questions before installing the parts.

Item Condition: New

Lifetime Warranty

This item is backed by our limited lifetime warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.

  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

Need help? Ask one of our Auto Experts
Need help? Ask one of our Auto Experts
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
Why do you have to change the factory pigtail harness , Why didnt they keep the square one dont like the idea of cutting the wire harness ?
Tim R August 2, 2020
Thank you for your question, Tim! If you still have the factory pump on this vehicle, then the plug will be square, not a flat 4-pin plug like this one is equipped with. This is due to a design change made by GM, and all new pumps for these vehicles come with the flat connector. If you already have the flat plug then you can simply reuse it if it is in good condition. They are typically burned out when you go to replace the pump, so they usually have to be replaced anyway.
Tim K August 3, 2020

Fits the following Makes:

Year Make Model Description
1997-1998Chevrolet C1500 Truck Chevrolet C1500 Truck V6 4.3L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998Chevrolet C1500 Truck Chevrolet C1500 Truck V8 5.0L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998-1999Chevrolet C1500 Truck Chevrolet C1500 Truck V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999Chevrolet C1500 Truck Chevrolet C1500 Truck V8 5.0L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998Chevrolet C2500 Truck Chevrolet C2500 Truck V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998Chevrolet C2500 Truck Chevrolet C2500 Truck V8 5.0L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998Chevrolet C2500 Truck Chevrolet C2500 Truck V8 7.4L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000Chevrolet C2500 Truck Chevrolet C2500 Truck (excluding Cab & Chassis) V8 6.5L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000Chevrolet C2500 Truck Chevrolet C2500 Truck (excluding Cab & Chassis) V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000Chevrolet C2500 Truck Chevrolet C2500 Truck (excluding Cab & Chassis) V8 7.4L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998Chevrolet C3500 Truck Chevrolet C3500 Truck V8 7.4L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998Chevrolet C3500 Truck Chevrolet C3500 Truck V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000Chevrolet C3500 Truck Chevrolet C3500 Truck (excluding Cab & Chassis) Gas Engine Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Main Tank Fuel Pump & Sending Unit Assembly
1997-1998Chevrolet K1500 Truck Chevrolet K1500 Truck V6 4.3L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998-1999Chevrolet K1500 Truck Chevrolet K1500 Truck V8 5.0L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998-1999Chevrolet K1500 Truck Chevrolet K1500 Truck V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998Chevrolet K2500 Truck Chevrolet K2500 Truck V8 5.0L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998Chevrolet K2500 Truck Chevrolet K2500 Truck V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998Chevrolet K2500 Truck Chevrolet K2500 Truck V8 7.4L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000Chevrolet K2500 Truck Chevrolet K2500 Truck (excluding Cab & Chassis) V8 7.4L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000Chevrolet K2500 Truck Chevrolet K2500 Truck (excluding Cab & Chassis) V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000Chevrolet K2500 Truck Chevrolet K2500 Truck (excluding Cab & Chassis) V8 6.5L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1997-1998GMC C1500 Truck GMC C1500 Truck V6 4.3L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998-1999GMC C1500 Truck GMC C1500 Truck V8 5.0L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998-1999GMC C1500 Truck GMC C1500 Truck V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998GMC C2500 Truck GMC C2500 Truck V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998GMC C2500 Truck GMC C2500 Truck V8 7.4L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998GMC C2500 Truck GMC C2500 Truck V8 5.0L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000GMC C2500 Truck GMC C2500 Truck (excluding Cab & Chassis) V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000GMC C2500 Truck GMC C2500 Truck (excluding Cab & Chassis) V8 6.5L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000GMC C2500 Truck GMC C2500 Truck (excluding Cab & Chassis) V8 7.4L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998GMC C3500 Truck GMC C3500 Truck V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998GMC C3500 Truck GMC C3500 Truck V8 7.4L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000GMC C3500 Truck GMC C3500 Truck (excluding Cab & Chassis) Gas Engine Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Main Tank Fuel Pump & Sending Unit Assembly
1997-1998GMC K1500 Truck GMC K1500 Truck V6 4.3L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998-1999GMC K1500 Truck GMC K1500 Truck V8 5.0L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998-1999GMC K1500 Truck GMC K1500 Truck V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998GMC K2500 Truck GMC K2500 Truck V8 7.4L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998GMC K2500 Truck GMC K2500 Truck V8 5.0L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998GMC K2500 Truck GMC K2500 Truck V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000GMC K2500 Truck GMC K2500 Truck (excluding Cab & Chassis) V8 6.5L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000GMC K2500 Truck GMC K2500 Truck (excluding Cab & Chassis) V8 7.4L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000GMC K2500 Truck GMC K2500 Truck (excluding Cab & Chassis) V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998GMC K3500 Truck GMC K3500 Truck V8 5.7L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1998GMC K3500 Truck GMC K3500 Truck V8 7.4L Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Fuel Pump & Sending Unit Assembly
1999-2000GMC K3500 Truck GMC K3500 Truck (excluding Cab & Chassis) Gas Engine Federal Emissions (without RPO Code K55 (Low Lubricity Fuel Sender)) Main Tank Fuel Pump & Sending Unit Assembly

Part Interchange

Brand Label Part Number
DIY Solutions FPU00233

This item may be interchangeable with parts from other brands with the above part numbers. This information is provided only for reference and does not guarantee that the item you are purchasing is identical to parts with part numbers from the brands listed above. To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.

FREE SAME DAY SHIPPING
AC DELCO
Brand #: MU1745
Product Reviews
5.00/ 5.0
2 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
2
0
0
0
0
Everything worked as advertised.Using all new parts makes the job much easier.The price was right.
February 13, 2017
Happy
Part arrived on time. Replacement part and wiring harness adapter worked as advertised. No surprises.
February 7, 2019
Customer service

877-844-3393

Monday - Friday 8:00am - 9:30pm ET
Saturday - Sunday 8:00am - 4:30pm ET


Chevrolet GMC Fuel Pump & Sending Unit Assembly ACDelco MU1745-ACFPU00003 does not fit your:


Before proceeding,

select your Vehicle, to verify this Part will fit.

This part will only fit a vehicle with these options.