September 2026

2002 Jeep Liberty Fuel Pump Flange: The Complete Guide to Replacement, Symptoms, and Cost

The bottom line: If you own a 2002 Jeep Liberty and are experiencing hard starts, sputtering, or a no-start condition, the fuel pump flange is often the culprit, not the entire pump assembly. The flange is a plastic component that seals the fuel pump module to the top of the fuel tank, and it is a known weak point on these vehicles. Replacing just the flange—rather than the entire fuel pump module—can save you significant money, but finding the right part requires careful attention to OEM numbers and build dates. The factory part number for the 2002-2003 Jeep Liberty fuel pump flange is 05069055AC (also listed as 5069055AC, 5069055AB, or 5069055AA) . This guide will walk you through everything you need to know about diagnosing a faulty flange, sourcing the correct replacement, and performing the installation yourself.

Understanding the 2002 Jeep Liberty Fuel Pump Flange

The fuel pump flange is the top portion of the fuel pump module that sits flush against the fuel tank opening. It contains the fuel line connections, electrical connector, and the mounting lock ring that secures the entire assembly to the tank. On the 2002 Jeep Liberty, this flange is a two-piece design: the upper section (which includes the flange itself) and the lower section (which contains the electric pump, fuel pressure regulator, and inlet filter) .

The flange itself is a plastic component that can crack, warp, or have its seal fail over time, leading to fuel leaks, pressure loss, and driveability issues. The fuel pump module is accessed from the rear cargo area of the Jeep, not from underneath the vehicle . This makes the replacement job more accessible than on many other vehicles, but it also means the flange is exposed to cargo area weight and potential damage.

Symptoms of a Failing Fuel Pump Flange on a 2002 Jeep Liberty

You do not need to replace the entire fuel pump module if the flange is the only problem. However, the symptoms of a bad flange often mimic those of a failing fuel pump. Here are the most common signs that your 2002 Jeep Liberty fuel pump flange needs attention:

Fuel Smell Inside the Cabin: A cracked or warped flange will allow fuel vapors to escape into the cargo area, which can then enter the passenger cabin. This is a strong indicator that the flange seal has failed .
Hard Starting After Short Stops: If the flange is not sealing properly, the fuel system may lose prime pressure. This means you will have to crank the engine longer than normal to restart it, especially after the vehicle has been sitting for only 15-30 minutes.
Fuel Leaks Near the Rear of the Vehicle: Visible fuel stains or drips under the rear of the Jeep, particularly around the fuel tank area, point to a flange or gasket issue.
Check Engine Light: A failing flange can cause the fuel system to not hold pressure, triggering a check engine light related to fuel system pressure or evaporative emission system leaks.
Whining Noise from the Fuel Tank: If the flange is cracked, the fuel pump may run louder than normal due to improper mounting or vibration.

OEM Part Numbers and Compatibility

Before you order a replacement, you need to verify the exact part number for your 2002 Jeep Liberty. The factory flange is listed under multiple OEM numbers, and the correct one depends on your vehicle's build date.

The primary OEM part number for the 2002-2003 Jeep Liberty fuel pump flange is 05069055AC . This part is also available as 5069055AC, 5069055AB, and 5069055AA . Many aftermarket suppliers use these numbers interchangeably.

However, Mopar's official parts catalog shows that the fuel flange package (part number 5069055AC) is listed as discontinued . This is a major challenge for owners, as the OEM flange is no longer being produced. The aftermarket has stepped in to fill this gap, but you need to be careful about quality.

For the 2002 Jeep Liberty, there is also a critical distinction based on the vehicle's build date. Vehicles built before November 25, 2002 (EDO or EKO designation) use a different fuel pump module configuration than those built after that date . The flange itself is the same physical part, but the internal components and wiring connections differ. If you are replacing only the flange, the build date matters less, but if you are replacing the entire module, you must match the build date.

Replacing the 2002 Jeep Liberty Fuel Pump Flange: Step-by-Step

Replacing the fuel pump flange on a 2002 Jeep Liberty is a straightforward job that most DIY mechanics can handle in a weekend. The process involves removing the fuel pump module from the top of the tank, swapping the flange, and reinstalling everything. Here is how to do it:

Step 1: Relieve Fuel System Pressure

The fuel system on the 2002 Jeep Liberty is under constant pressure, even with the engine off . Locate the fuel pump fuse in the fuse box, remove it, and then start the engine. Let it run until it stalls from fuel starvation. Turn the key off, then disconnect the negative battery terminal.

Step 2: Access the Fuel Pump Module

Open the rear cargo area of your Jeep Liberty. Remove the four cargo hold-down clamps by drilling out the rivets that secure them to the floor . Fold the carpeting forward to expose the fuel pump access plate. This is a metal plate held in place by four nuts. Remove the nuts and carefully pry up the access plate. Use a heat gun to soften the sealant if the plate is stuck .

Step 3: Clean the Area

Thoroughly clean the top of the fuel pump module and the surrounding area to prevent any dirt or debris from falling into the fuel tank when you open it.

Step 4: Disconnect Fuel Lines and Electrical Connector

The 2002 Jeep Liberty uses quick-connect fuel line fittings. Press the two buttons on the sides of each fitting to disconnect the fuel supply and return lines . Disconnect the electrical connector by sliding the red tab to unlock it, then pressing the gray tab to release it. Also, disconnect the ORVR (Onboard Refueling Vapor Recovery) hose clamp and hose from the pump module fitting .

Step 5: Remove the Lock Ring

The fuel pump module is held in place by a large lock ring. Use a brass drift and a hammer to tap the lock ring counter-clockwise until it is loose . Do not use a steel punch, as it can damage the ring. Lift the ring off.

Step 6: Remove the Upper Section of the Pump Module

Carefully lift the upper section of the pump module (which includes the flange) from the fuel tank. Lift it very slowly until the rubber gasket is visible. If the gasket is stuck to the tank, use a screwdriver to gently pry it free. If the gasket falls into the fuel tank, you will have to retrieve it .

Step 7: Disconnect Internal Components

Once the upper section is lifted, you will see the connections to the lower section. Disconnect the electrical connector at the bottom of the upper pump module section. Press the two locking tabs on the fuel pressure regulator to disconnect it. Press the two locking tabs on the fuel return line to disconnect it . Remove the upper section from the tank.

Step 8: Replace the Flange

Transfer the fuel pressure regulator, fuel return line, and electrical connector from the old flange to the new one. Make sure the rubber gasket is properly seated in the groove of the new flange. The gasket is a critical component for preventing leaks.

Step 9: Reinstall the Module

Lower the new upper section (with the new flange) into the fuel tank. Reconnect the fuel return line, the fuel pressure regulator, and the electrical connector at the bottom of the upper section. Make sure the rubber gasket is properly positioned. Place the lock ring on top of the flange and tap it clockwise using a brass drift and hammer until it is fully seated.

Step 10: Reconnect External Connections

Reconnect the fuel lines, the electrical connector, and the ORVR hose. Reinstall the access plate, the carpet, and the cargo hold-down clamps. Connect the negative battery terminal. Turn the key to the "ON" position (but do not start the engine) to prime the fuel system. Check for leaks. Start the engine and verify proper operation.

Cost Considerations: Flange vs. Full Module

One of the biggest advantages of replacing just the fuel pump flange is the cost savings. A complete fuel pump module assembly for the 2002 Jeep Liberty can cost anywhere from $100 to $600, depending on the brand and whether you buy OEM or aftermarket . In contrast, the flange itself is much cheaper. Aftermarket flanges are available for as low as $11 per piece, though minimum order quantities may apply .

However, the OEM flange is discontinued, which complicates the search . If you can find a NOS (New Old Stock) OEM flange, expect to pay a premium, possibly $50-100 or more. Aftermarket options are available, but quality varies widely. Some aftermarket flanges have been reported to have high defect rates, so it is important to choose a reputable supplier .

If your fuel pump is also failing, it may be more cost-effective to replace the entire module rather than just the flange. A complete fuel pump module assembly for the 2002 Jeep Liberty is available from brands like Delphi, Autobest, and TRQ for around $55-160 . The Delphi FG1222, for example, covers both the 2.4L and 3.7L engines and costs around $157 .

Aftermarket Flange Options for the 2002 Jeep Liberty

Because the OEM flange is discontinued, the aftermarket is the primary source for replacement flanges. Here are the main options:

Esaever Fuel Pump Flange: This is one of the few aftermarket suppliers that specifically lists the 2002-2003 Jeep Liberty flange. The product number is 05069055AC/5069055AC. It is made from aluminum, which is a notable upgrade over the original plastic flange. The supplier, Wenzhou Esaever Auto Parts Co., Ltd., has a 4.8 out of 5.0 supplier rating and offers a 1-year or 20,000 km warranty . However, the minimum order quantity is high (111 pieces), so this is more of a wholesale option for shops .

Generic Aftermarket Flanges: Many suppliers on platforms like Alibaba and Accio list flanges for the 2002 Jeep Liberty, but they often require bulk orders. The market is fragmented, and finding a single flange for a retail customer can be difficult . The flange is a "ghost town" in the aftermarket, meaning there is high demand but low supply .

Complete Module Kits: If you cannot find a standalone flange, your best option may be to buy a complete fuel pump module assembly. Brands like Autobest, Delphi, and TRQ offer modules that include the flange as part of the assembly. The Autobest 2292-05769610, for instance, is a complete module for the 2002-2003 Jeep Liberty that costs about $90 .

Why the Flange Fails on the 2002 Jeep Liberty

The fuel pump flange on the 2002 Jeep Liberty is a known weak point for several reasons:

Plastic Material: The original flange is made of plastic, which can become brittle over time due to exposure to fuel vapors and heat cycles. Cracks often develop around the mounting points or the fuel line connections.

Cargo Area Weight: The access panel for the fuel pump is located in the rear cargo area. If heavy items are placed directly over the access plate, the weight can transfer to the flange, causing it to warp or crack.

Age and Mileage: These vehicles are now over 20 years old. The rubber gasket that seals the flange to the tank can dry out and shrink, leading to leaks. The plastic flange itself can also become brittle from age.

Final Thoughts on the 2002 Jeep Liberty Fuel Pump Flange

Replacing the fuel pump flange on your 2002 Jeep Liberty is a practical repair that can save you hundreds of dollars compared to replacing the entire fuel pump module. The key is to source the correct part and verify the build date of your vehicle. While the OEM flange is discontinued, aftermarket options exist, though they may require bulk purchasing.

If you are planning to keep your Jeep Liberty for the long term, consider replacing the entire fuel pump module as a preventive measure. The module is a wear item that typically lasts 100,000 to 150,000 miles. If you are already at that mileage, replacing the whole module now will save you from having to do the job again in the near future.