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Vehicle Fit

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

This electric fuel pump module assembly features the following specifications:

  • Mounts in fuel tank
  • Replaces dealer part number: 88957239
  • Complete module assembly
  • Electric fuel pump already mounted as shown
  • Includes items shown
  • Direct replacement
  • Correct electrical connections
  • Built to strict quality control standards
  • Fits 4 & 6 cylinder engines

Note: This fuel pump is equipped with a new design improved connector. Depending on applications, slight modifications may be necessary. Instructions are included with new fuel pump module. The same instructions are also attached to this listing for reference.

For 04-05 Malibu classic vehicles, the 4th digit in your VIN (Vehicle Identification Number) needs to be a an "N".

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

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.

This fuel pump includes a new electrical connector harness. You will need to remove your existing electrical connector and install the new connector provided in order to install your new fuel pump (instructions are included with the pump).

This fuel pump is not a universal fit item. 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 during fuel pump service.

Rigorously Tested

Meets or exceeds all SAE fuel pump performance and durability standards

Highest Quality Material

Consistent high quality plastic molding media.

High-carbon motor commutator and brushes for longer pump life

Direct Fit Replacement

Guaranteed to fit and function correctly for your specific application

Item Condition: New

Attention California Customers:

WARNING:  This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer, and birth defects or other reproductive harm.  For more information, go to

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 : Depressurize fuel system (1:30)
    • With the car running, open the hood and access the fuse center.
    • Pull out the fuel pump relay which is #18 in this car.
    • After awhile your car will stop running because it runs out of fuel.
  2. step : Disconnect battery (2:20)
    • Use an 8mm wrench to disconnect the negative battery cable
  3. step : Disconnect and remove fuel tank (2:30)
    • Spray the bolts on the straps holding the fuel tank with penetrating oil.
    • Loosen up the clamp at the top of the fuel neck.
    • Grab onto that hose and twist it free and pull it off.
    • Unplug the connectors by pulling out the safety tabs.
    • Unclip the green clip behind the fuel tank by prying the tab and pinching to disconnect the line.
    • Make sure you have a catch pan ready because this will leak fuel.
    • Repeat on the upper line with the blue tab.
    • Use a screwdriver to help if it’s difficult to reach.
    • Disconnect the rest of the hoses.
    • Loosen the heat shield between the exhaust and the tank.
    • Support the tank and remove the straps.
  4. step : Remove assembly (8:03)
    • Use your needle nose pliers to disconnect the locking tab at the top of the connector.
    • Unplug the wiring from the fuel pump assembly.
    • Use a chisel and hammer to remove the locking ring.
    • Pull the fuel pump assembly up and out.
    • Remove the old O ring
  5. step : Install new fuel pump (10:06)
    • Put in the new O ring
    • Place the new assembly in and lock the locking ring in place by turning it clockwise into the brackets.
    • Secure with hammer and chisel.
    • Plug in the new lead and use wire taps to connect the wiring with the old square ended lead.
    • New large black lead connects to the old black lead.
    • New thin black lead connects to old black and white lead.
    • Purple and purple leads connect as do the grey ones.
  6. step : Reinstall the fuel tank (13:49)
    • Jack the tank back up.
    • Bolt the straps back in, tightening the bolts with a hand wrench.
    • Reconnect all the harnesses.
    • Reconnect the big tube.
    • Reconnect all the fuel lines, remembering to remove the little green line protectors.
    • Secure the heat shield.
    • Reconnect the fuel neck.
  7. step : Finish up (15:40)
    • Put the fuel pump relay back in.
    • Reconnect the battery.
    • Cycle the key a couple times to make sure the fuel gauge is working.
    • Start the car and check underneath for any fuel leaks.

Tools needed for replacement:

    General Tools

  • Hammer
  • Floor Jack
  • Chisel
  • Drain Pan

  • Materials, Fluids, and Supplies

  • Rust Penetrant

  • Ratchets & Related

  • Socket Extensions
  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver
  • Phillips Head Screwdriver

  • Sockets - Metric

  • 7mm Socket
  • 13mm Socket
  • 10mm Socket

  • Wrenches - Metric

  • 8mm Wrench

4.57/ 5.0
23 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great price for a brand new fuel pump. Fit like a glove too, thanks.
May 28, 2011
Wire instructions wrong
2000 cavalier plastic tank swap large black and grey wire locations or fuel pump runs in reverse pumping no fuel
January 2, 2016
Fast delivery and excellent price. As noted by someone else, the wiring instructions were wrong. Other than that, it worked like a charm.
August 1, 2016
Works Okay So Far
Installed on 2004 Chevy Cavalier. Its been running okay for about a week or so. My problem was the gasket was a little big for my tank that it barley fit and the plastic top part of the pump barley fit over the gasket. This resulted in the first install being messed up and overfilling and having to do it all over again. The second time I was super careful about trying to get the best seal possible with the gasket. I also had the gaskets keep falling out of one of the fuel lines that I thought was odd and a pain in the rear. For wiring we followed the instructions it came with that were accurate. We just had to be careful to look at the plug in the right direction as the paper. Just make sure the color wires match up in the diagram in the way you are looking at it. Recommendations: 1. Be very careful getting a good seal on the gasket. 2. I suggest having a 5 gallon gas can ready and a cheap hand pump to pump out as much gas as possible to make the tank as light as possible to re-install it. 3. Before re-installing the tank we plugged everything in and turn the key to make sure it spit fuel out of the line we were expecting it to. 4. Make sure you take the tap off the pump float. 5. Make sure your pump is turned enough so the float isnt under a plastic (air) piece in the tank or it will hit that as you fill up your tank and so your gauge will get stuck about halfway.
November 3, 2016
fit and working great
bought this for a friend on a budget. She has been tearing up the road for quite some time now with this fuel pump. Had no issues works and was easy to install. Yes I would recommend anyone to buy this.
February 15, 2017
I have now used 1A auto for several purchases and they have come through again. This exact pump was 3 times the price at a local auto parts store Thanks keep up the awesome site
February 21, 2017
I really like the fuel pump that I purchased.everything was there, shipping was adequate.I am overall satisfied and will more than likely purchase more car parts from you guys. Thanks for great service.
March 24, 2017
Fuel pump
Works great, been having for a few days. Easy to install, color match all the wires and you shouldnt have a problem. Just make sure to at least put 8 gallons in order to see the fuel gauge move up of not it will show like its empty.
August 20, 2017
Fuel pump for Alero
The unit arrived very quickly and was installed perfectly in our Olds Alero. All that was needed was a full tank of gas to balance the float.
January 19, 2018
Great Service
Got here on schedule, fine part, and a tutorial video to help me with installation. Will recommend this site to friends looking for parts. Thank you so much
April 15, 2018
2004 grand am fuel pump
The price with the warranty is unbeatable! The delivery time was just right considering there was no charge. Since the time of installation the product has performed perfectly. Thank you for your service! Alan G.
April 21, 2018
Very satisfied
I was extremely satisfied with both the shipping and the product that I ordered. It came in perfect condition and with helpful instructions.
May 6, 2018
DID NOT RUN This pump did not work at all
I will never buy anything from this site again the pump was installed correctly and double checked by a mechanic and would still not run. I had to install the old pump I was updating. I am currently trying to get ahold of customer support and get my money back for this piece of junk part.
July 6, 2018
Worked like a charm!
I ordered this fuel pump for my husbands 2005 Pontiac Sunfire. The part was super easy to order and super easy to install with the help of the Installation video by 1AAuto. When I ordered the part there was also a list of tools I would need so I could get everything together before crawling under the car, which saved loads of time looking for this tool or that tool! I would order this part again and recommend it for others! I plan on ordering a few more parts for my Tahoe too.
September 9, 2018
Highly recommend!
Was skeptical about buying a fuel pump that wasn’t $200+ like the rest but this pump has been installed for about 3 months now and works like a charm! Installation wasn’t hard either, learned that you have to use the thicker o-ring for it to work. Works great and car has never ran better
September 29, 2018
the fuel pump for my 2002 cavalier was easy to order, came a day early with free shipping and was a 3rd of the price that the local auto parts places want...5 stars.
October 4, 2018
Perfect fit for 2001 Chevy Malibu
This was a perfect fit was easy to wire up and no problems with it at all good price would buy again if needed to.
October 7, 2018
Fuel pump
Just had to cut the wires and wire it up. Fit was perfect! No problems with the unit.
October 22, 2018
Exactly what I needed.
Thanks to very fast shipping and sending exactly the parts I needed my car was back on the road quickly. I would highly recommend doing business with these great people.
October 23, 2018
My satisfaction
I was really please with my first order from your company. I received my package on time and it was the exact part that I ordered. Thank you I will continue to give you my business and will promote your products.
October 27, 2018
2003 Chevy Malibu
Fuel pump seems to be working great so far other companies they broke down within a couple of months but so far youre part is been good great service very happy thanks Steve
November 8, 2018
Fuel pump
Part arrived early, was a perfect fit, and working great for less then half the cost of local auto part stores, my second purchase and been great quality and service each time
November 16, 2018
Fuel Pump
Hello,I ordered a fuel pump sending unit.The pump assembly arrived just when they estimated it to & in good package condition.The reps at 1A are always nice & friendly.Great service all the way round.I recommend them to anybody looking to shop online for auto parts.
November 19, 2018
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
can you put an in line to bypass pump in tank?
Carl E February 28, 2016
Yes if it provides same fuel pressure as needed but why go to all agravation just replace original
Travis S February 28, 2016
They may make some sort of in line pump but this isnt the one. However, I installed this pump in a 2001 Pontiac Grand Prix and it was pretty easy. There was a metal cover in trunk just behind the back seat that gave easy access to fuel pump.
George B February 28, 2016
Not recommended as this design uses the fuel to keep the pump from overheating.
Brian F February 29, 2016
Does it come with a fuel pressure regulator ?
Walter damon N August 27, 2018
No, you would have to buy that separately
Shawn Q August 27, 2018
Does this pump work for a 2004 pontiac grand am 2.2?
Elpidio G December 2, 2018
Don’t no
Janique J December 3, 2018
Yes, according to the information you provided, this part will fit your vehicle.
Adam G December 3, 2018
Year Make Model Description
2000Chevy Cavalier Chevy Cavalier Fuel Pump & Sending Unit Module for Models with Plastic Fuel Tank
2001-2005Chevy Cavalier Chevy Cavalier Fuel Pump & Sending Unit Module
2004-2005Chevy Classic Chevy Classic Fuel Pump & Sending Unit Module
2000-2003Chevy Malibu Chevy Malibu Fuel Pump & Sending Unit Module
2000-2004Oldsmobile Alero Olds Alero Fuel Pump & Sending Unit Module
2000-2005Pontiac Grand Am Pontiac Grand Am Fuel Pump & Sending Unit Module
2000Pontiac Sunfire Pontiac Sunfire Fuel Pump & Sending Unit Module for Models with Plastic Fuel Tank
2001-2005Pontiac Sunfire Pontiac Sunfire Fuel Pump & Sending Unit Module
Part #: 1AFPU01100

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(16:54 min)