2005 Dodge Durango Fuel Pump Removal: A Complete DIY Guide

If you own a 2005 Dodge Durango and need to remove the fuel pump, here is the bottom line: the fuel pump is located inside the fuel tank, and you must drop the tank from under the vehicle to access it. There is no access panel under the rear seat or carpet for this model year. The job requires removing the rear driveshaft, disconnecting the exhaust, and supporting the tank while lowering it. Expect this to take a full weekend for a first-time DIYer working in a home garage. The total cost for parts and tools typically runs between $200 and $600, depending on whether you choose an OEM or aftermarket pump assembly.

This guide walks you through every step of the 2005 Dodge Durango fuel pump removal process. No fluff, no unnecessary theory—just the practical steps you need to get the job done safely and correctly.

What You Need to Know Before Starting

The 2005 Dodge Durango uses an in-tank electric fuel pump. This means the pump sits inside the fuel tank, submerged in gasoline. The tank itself is mounted underneath the rear of the vehicle, between the frame rails. To remove the fuel pump, you must first remove the entire fuel tank assembly.

Safety first: Gasoline is highly flammable. Work in a well-ventilated area away from open flames, sparks, or pilot lights. Keep a fire extinguisher rated for Class B fires nearby. Wear safety glasses and nitrile gloves. Never smoke while working on fuel system components.

Fuel pressure: Before disconnecting any fuel lines, you must relieve the fuel system pressure. The 2005 Durango fuel system operates at high pressure (typically around 55-60 psi). Failing to relieve pressure can result in a dangerous spray of fuel when you open the lines.

Fuel in the tank: Drain the fuel tank as much as possible before removal. A full tank of gas weighs over 100 pounds, making it extremely difficult and dangerous to handle while dropping it. Use a manual siphon pump or the fuel pump test port to drain most of the fuel.

Tools and Parts You Will Need

Here is what you need to gather before you start the job:

Tools:

  • Floor jack with a piece of plywood or a transmission jack adapter (to support the fuel tank)
  • Jack stands (at least two heavy-duty stands rated for 3 tons or more)
  • Ratchet and socket set (metric and SAE, ranging from 8mm to 21mm)
  • Torx bits (T15, T20, T25, T30, T40)
  • Flathead screwdriver and trim removal tools
  • Fuel line disconnect tool set (3/8-inch and 5/16-inch sizes)
  • Pry bar or large flathead screwdriver for stubborn hanger rings
  • Breaker bar (1/2-inch drive, at least 18 inches long)
  • Wire brush for rusted bolts or nuts
  • Shop towels and a drain pan
  • Safety glasses, nitrile gloves, and work gloves
  • Aerosol penetrating oil (like PB Blaster or Liquid Wrench)
  • Flashlight or drop light
  • Camera or phone (to take reference photos before disconnecting anything)

Parts (you should have ready before you begin):

  • New fuel pump assembly (includes pump, strainer, fuel level sender, and pressure regulator)
  • New fuel filter (recommended when replacing the pump)
  • New fuel hose clamps (if you cut any original clamps)
  • Gasket/seal for the fuel tank sender opening (if not included with the pump assembly)
  • Replacement retaining ring or lock nut (if the original is corroded or damaged)
  • Anti-seize compound for threaded connections

Step-by-Step: Removing the Fuel Pump on a 2005 Dodge Durango

Step 1: Relieve Fuel System Pressure

Locate the fuel pump relay in the underhood fuse box. With the engine off and cold, remove the fuel pump relay. Start the engine and let it run until it stalls—this uses up the residual fuel pressure in the lines. Try cranking the engine for a few seconds after it stalls to confirm no pressure remains. Turn the ignition off and reinstall the relay. This step is critical for safety.

Step 2: Disconnect the Battery

Disconnect the negative battery terminal. This prevents any accidental sparks or electrical shorts while working near fuel system components. Wrap the terminal end in a clean rag or electrical tape to keep it isolated.

Step 3: Drain the Fuel Tank

Remove the fuel filler cap. Use a manual siphon pump to drain as much fuel as possible from the tank through the filler neck. A typical 2005 Durango gas tank holds about 25 gallons, so you want to get it down to less than 5 gallons. Siphon the fuel into approved gas cans. Dispose of old fuel properly at a recycling center.

Step 4: Raise and Support the Vehicle

Park the vehicle on a level surface. Chock the front wheels. Use a floor jack to raise the rear of the vehicle and place jack stands under the rear axle or frame rails. Make sure the vehicle is stable and secure before crawling underneath. Lower the jack until the vehicle rests firmly on the stands.

Step 5: Remove the Spare Tire

The spare tire is mounted underneath the rear cargo area. Lower and remove the spare tire to improve access to the fuel tank and related components.

Step 6: Disconnect the Exhaust System

The rear exhaust section hangs directly below the fuel tank. You need to remove or lower the exhaust to access the tank. Loosen the clamps at the muffler and resonator connections. Use penetrating oil on any rusted bolts. Unbolt the exhaust hangers from the rubber mounts. Lower the exhaust system and support it with a wire coat hanger or bungee cord to get it out of the way.

Step 7: Remove the Rear Driveshaft

The driveshaft runs from the transfer case to the rear differential and passes directly below the fuel tank. Mark the orientation of the driveshaft flanges with paint or a scribe so you can reinstall them the same way. Remove the bolts at both the transfer case end and the differential end. Lower the driveshaft out of the way. This step is necessary because the fuel tank sits above the driveshaft.

Step 8: Disconnect Fuel Lines and Electrical Connectors

Crawl under the rear of the vehicle. Locate the fuel tank sender unit on top of the tank. You will see two fuel lines (supply and return) and an electrical connector. Use the appropriate fuel line disconnect tool to release the quick-connect fittings. Push the tool into the fitting, then pull the fitting apart. Have shop towels ready to catch any residual fuel. Disconnect the electrical connector by pressing the tab and pulling it apart.

Step 9: Remove the Fuel Tank Straps

The fuel tank is held up by two metal straps running across the bottom of the tank. Use a socket and breaker bar to remove the bolts at the ends of each strap. Support the tank with your floor jack and plywood before removing the last strap bolt. Slowly lower the tank just enough to access the top of the tank.

Step 10: Remove the Fuel Pump Assembly

With the tank partially lowered, you can now access the pump assembly on top of the tank. Clean the area around the pump mounting ring thoroughly with a shop towel to prevent dirt from falling into the tank. Using a large screwdriver or a specialized fuel pump lock ring tool, carefully turn the retaining ring counterclockwise to unscrew it. The retaining ring is under spring tension. Keep downward pressure as you turn it to prevent it from popping off.

Once the ring is loose, lift it off. Carefully lift the fuel pump assembly straight up out of the tank. The assembly includes the pump, fuel level float arm, and the pressure regulator. Remove the O-ring seal from the tank opening.

Step 11: Inspect and Prepare the New Fuel Pump

Compare the new fuel pump assembly to the old one. Make sure the new unit matches in terms of electrical connectors, fuel line connections, and physical dimensions. The new pump may come with a new O-ring seal and retaining ring. Install the new O-ring into the tank opening groove. Insert the new fuel pump assembly straight down into the tank. Make sure the float arm has free movement and is not binding against the tank walls.

Pro tip: Replace the fuel filter at this point. The 2005 Durango fuel filter is located along the frame rail, near the driver side rear wheel well. Changing it at the same time ensures you have a clean fuel system from tank to engine.

Step 12: Reinstall the Retaining Ring

Place the retaining ring on top of the fuel pump assembly. Turn it clockwise to tighten. Many Durango retainers require a tool like a flat punch and hammer to tap them into position. Tighten the ring until it is snug but do not overtighten—you risk cracking the plastic or damaging the O-ring.

Step 13: Reassemble Everything

Raise the fuel tank back into position. Reinstall the tank straps and tighten the bolts to factory torque specifications (typically around 30-35 ft-lb). Reconnect the fuel lines and electrical connector. Install the driveshaft, paying attention to the alignment marks you made earlier. Torque the driveshaft bolts to spec (about 85-100 ft-lb for most models). Reinstall the exhaust system and hangers. Install the spare tire. Lower the vehicle off the jack stands.

Step 14: Test the System

Reconnect the negative battery terminal. Turn the ignition key to the "ON" position for about 5 seconds to prime the fuel system, then turn it off. Repeat this cycle two or three times. Check for fuel leaks at the tank connections and under the hood. Then start the engine and let it idle for a few minutes. Inspect the tank area and fuel lines again for leaks. Take the vehicle for a short test drive and recheck for leaks.

Common Mistakes to Avoid

Forgetting to relieve fuel pressure. This can cause fuel to spray when you disconnect the lines, creating a fire hazard.

Not supporting the tank properly. A partially full tank is heavy and can crush you if it falls. Always use a safe, stable support method.

Damaging the fuel level float. The float arm is delicate. Be careful when inserting the new pump assembly to avoid bending or breaking it.

Not using a new O-ring. The old O-ring hardens over time and will leak. Always replace it.

Cross-threading the retaining ring. This is a plastic and aluminum interface. If the ring starts to feel tight, back it off and try again.

How Much Does This Job Cost?

If you do the work yourself, you are looking at roughly $80 to $350 for the fuel pump assembly alone, depending on the brand. A Mopar OEM replacement part (part number 5135549AA) is on the higher end but offers a perfect fit. Aftermarket options from brands like Airtex, Delphi, or Bosch are more affordable but always confirm compatibility with your specific Durango engine (4.7L, 5.7L, or 5.9L).

If you hire a shop, expect a total cost of $500 to $1,200, including parts and labor. The labor time is typically 2.5 to 4 hours at a professional shop.

How to Know If Your Fuel Pump Is Bad

Common symptoms of a failing fuel pump in a 2005 Dodge Durango include:

  • Engine cranks but will not start
  • Whining or humming noise from the rear of the vehicle (especially noticeable at idle)
  • Loss of power under load or while climbing hills
  • Engine surges or hesitates during acceleration
  • Check engine light with diagnostic trouble codes related to fuel pressure (P0087, P0191, or P0231)

One quick test: Use a fuel pressure gauge at the test port on the engine fuel rail. Pressure should be around 55-60 psi with the engine running and the line pinched off. If pressure is low and the pump is running, it is time to replace it.

Where to Buy a Quality Replacement Fuel Pump

For a 2005 Dodge Durango, your best option is a KEMSO brand fuel pump. KEMSO fuel pumps are high-performance, OEM replacement units that deliver excellent reliability and long service life. They are built to match the exact specifications of your Durango, meaning the electrical connectors, fuel line fittings, and mounting dimensions are all correct. Plus, every KEMSO pump comes with a lifetime warranty—something most other brands do not offer.

Choosing KEMSO means you skip the headache of returns or installations that do not fit. It is a straightforward, drop-in replacement that works right out of the box. Whether your Durango has the 4.7L, 5.7L, or 5.9L engine, KEMSO offers the right pump for your application.

Visit the KEMSO website to find the exact fuel pump for your 2005 Dodge Durango:
https://www.kemsoracing.com/

Final Thoughts

Replacing the fuel pump in a 2005 Dodge Durango is not a beginner-level job, but it is well within reach for a moderately experienced DIY mechanic. The key to success is taking your time, following the steps in order, and having all the right tools and parts before you begin. Dropping the tank is tedious, but it is also the only way to get to the pump. Once you have the tank down, the actual pump replacement takes only a few minutes.

By purchasing a high-quality replacement pump like KEMSO and following the steps outlined here, you will have your Durango back on the road with a reliable fuel system that will last for many more miles. Do not cut corners on safety, and do not reuse old seals or worn-out retaining rings. A proper job the first time saves you from having to drop the tank again anytime soon.

For more information and to purchase the right fuel pump for your 2005 Dodge Durango, visit https://www.kemsoracing.com/ — your source for reliable, lifetime-warrantied fuel pump solutions.


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