2006 Dodge Charger RT Fuel Pump Replacement: Complete Owner's Guide

The bottom line: Your 2006 Dodge Charger RT most likely has two fuel pumps – a primary pump on the driver's side and an auxiliary pump on the passenger side – and replacing either one is a job you can do yourself in about one to two hours with basic hand tools, saving hundreds of dollars in labor costs.

The 2006 Dodge Charger RT, powered by the 5.7L Hemi V8, uses an in-tank electric fuel pump system that delivers fuel at roughly 40–60 PSI depending on operating conditions. Unlike many older vehicles that used a single external pump, the Charger's fuel delivery setup is more complex. Understanding how many pumps you have, what symptoms point to failure, and how to swap them out will save you time, money, and frustration.

This guide covers everything you need to know about the 2006 Dodge Charger RT fuel pump replacement, including how to diagnose a failing pump, what parts you need, step-by-step installation instructions, and how much you can expect to pay whether you DIY or hire a shop.

Why Your Charger RT Has Two Fuel Pumps

The 2006 Dodge Charger RT doesn't rely on just one fuel pump. The vehicle uses a primary fuel pump on the driver's side (left) and an auxiliary or secondary pump on the passenger side (right). This dual-pump design is common on the LX platform, which includes the Charger, Chrysler 300, Dodge Magnum, and Dodge Challenger from 2005 through the early 2010s.

The primary pump on the driver's side is the main workhorse. It draws fuel from the tank and pushes it toward the engine at the required pressure. The passenger-side pump serves as a transfer or auxiliary pump. In many configurations, especially on Hemi models like the RT, the passenger-side pump helps move fuel from one side of the saddle-style fuel tank to the other, ensuring the primary pump always has a steady supply even when the tank is low.

This dual-pump layout means that if you experience fuel delivery problems, either pump could be the culprit. That's why proper diagnosis matters before you start buying parts.

Common Symptoms of a Failing Fuel Pump in a 2006 Charger RT

Fuel pumps don't usually fail without warning. The most common symptoms of a failing fuel pump in a 2006 Dodge Charger RT include engine stalling, difficulty starting, loss of power under acceleration, and a whining noise coming from the fuel tank area.

Here are the specific signs to watch for:

  1. Engine cranks but won't start – If the pump isn't delivering fuel pressure, the engine may crank over fine but never fire up. This is often the first major sign that the pump has failed completely.

  2. Intermittent stalling – A pump that's on its way out may work fine sometimes and fail other times. If your Charger stalls without warning, especially when the tank is low, the pump could be overheating or the pickup screen could be clogged.

  3. Loss of power under load – When you accelerate hard, the engine needs more fuel. A weak pump can't keep up with demand, causing hesitation, sputtering, or a noticeable lack of power.

  4. Whining or humming from the fuel tank – A healthy pump makes a quiet hum for a couple of seconds when you turn the key to the ON position. If you hear a loud, continuous whine, the pump bearings are wearing out.

  5. Poor fuel economy – A pump that's not maintaining proper pressure forces the engine to work harder, which burns more fuel.

  6. Check Engine Light – A failing pump can trigger lean fuel mixture codes, which will illuminate the check engine light on your dash.

Before You Start: Quick Diagnostic Checks

Before you drop the rear seat and start pulling pumps, take a few minutes to confirm the problem is actually the fuel pump. A quick way to check if the pump is working is to turn the ignition to the ON position (without starting the engine) and listen for a humming sound from the fuel tank area. If you hear that priming hum, the pump is receiving power and attempting to run.

Another useful diagnostic step is checking fuel pressure with a gauge. The 2006 Charger RT should maintain roughly 40–60 PSI at the fuel rail, depending on engine load and temperature. If pressure is below spec, the pump, fuel filter, or fuel pressure regulator could be at fault.

Also, check the fuel pump relay and fuse before condemning the pump. A blown fuse or faulty relay can mimic a dead pump, and replacing either one is far cheaper than buying a new pump assembly. On the LX platform, the fuel pump relay is typically located in the fuse box in the trunk.

One known issue on early LX-platform cars is a faulty multifunction control valve in the fuel tank, which can cause stalling right after filling up. This is a separate problem from the pump itself but can produce similar symptoms.

Parts You'll Need for the Job

Once you've confirmed the pump needs replacing, you'll need to gather the right parts. The fuel pump assembly for a 2006 Dodge Charger RT includes the pump motor, the fuel level sending unit, the strainer (filter sock), and the mounting flange.

Here's what you'll need:

  • Primary left fuel pump assembly – This is the driver's side pump. For a 2006 Charger RT with a 5.7L Hemi and a 19-gallon tank, you'll need the specific assembly that matches your tank size.
  • Auxiliary right fuel pump assembly – The passenger-side pump. If only the passenger side is failing, you can replace just that side.
  • New O-ring or gasket – Always replace the seal between the pump assembly and the tank to prevent fuel leaks and odors.
  • Fuel line quick-disconnect tool – You'll need this to safely release the fuel lines from the pump assembly.
  • Brass punch and hammer – These are used to loosen the large lock ring that holds the pump in place.
  • Safety gear – Nitrile gloves, safety glasses, and a fire extinguisher rated for fuel fires.

Important note about tank sizes: Some 2006 Chargers came with an 18-gallon tank, while others had a 19-gallon tank. The pump assemblies are different between these two tank sizes, so check your vehicle's build sheet or measure the tank to ensure you order the correct part.

2006 Dodge Charger RT Fuel Pump Replacement Cost

The cost to replace a fuel pump on a 2006 Dodge Charger varies significantly depending on whether you do the work yourself or hire a professional. A typical replacement at a shop will cost between $500 and $1,500, with the pump module itself ranging from $150 to $500 and labor adding $350 to $1,000 or more.

Here's a breakdown of what you can expect:

  1. DIY cost – If you're handy with tools, you can buy an aftermarket fuel pump assembly for as little as $70 to $100 for either side. OEM Mopar parts will cost more – typically $350 to $500 or higher for a new unit. Since the job takes about one to two hours of your own time, your total cost is just the price of the part.

  2. Independent shop cost – Most independent mechanics charge $75 to $125 per hour for labor and typically estimate two to four hours for this job. With an aftermarket pump, you're looking at roughly $450 to $900 total.

  3. Dealership cost – Dealerships charge higher labor rates, often $120 to $180 per hour, and they'll likely insist on OEM Mopar parts. Expect to pay $900 to $1,600 or more at a dealership.

A used OEM pump is another option. You can find tested, low-mileage OEM fuel pumps online for $50 to $150. Just inspect the strainer and the housing for damage before buying, and ask about the mileage of the donor vehicle.

Step-by-Step: How to Replace the Fuel Pump

Replacing the fuel pump on a 2006 Dodge Charger RT is rated as a difficulty of 2 out of 5, making it a manageable DIY project for anyone with basic mechanical skills. The pump is accessed through an opening under the rear seat, so you won't need to drop the fuel tank.

Here's the complete process:

Step 1: Relieve Fuel System Pressure

The fuel system is under high pressure, so you must relieve it before opening anything. Locate the fuel pump relay or fuse in the fuse box (usually in the trunk on the Charger) and remove it. Start the engine and let it run until it stalls. This depressurizes the system. Crank the engine once more for a few seconds to make sure all pressure is gone.

Step 2: Disconnect the Battery

Disconnect the negative battery terminal in the trunk. This eliminates any risk of sparks while you're working around fuel.

Step 3: Remove the Rear Seat Cushion

The rear seat bottom cushion is held in by two clips. Pull up firmly on the front edge of the seat on both the driver and passenger sides to release it. Once the clips are free, lift the cushion out.

Step 4: Access the Fuel Pump

Under the rear seat, you'll find the access covers. On the passenger side, look for a round metal or rubber cover. Remove it to expose the top of the fuel pump assembly. The driver's side pump is accessed the same way on the driver's side.

Step 5: Clean the Area

Before you open anything, thoroughly clean the top of the pump and the surrounding area. Dirt and debris that falls into the fuel tank will clog the new pump's strainer. Use a shop rag and some brake cleaner to get the area spotless.

Step 6: Disconnect the Electrical Connector and Fuel Lines

Unplug the electrical connector from the top of the pump assembly. Then disconnect the fuel lines. The lines use quick-disconnect fittings that require pressing a tab to release the line. A fuel line disconnect tool makes this step much easier. Have a rag ready to catch any residual fuel.

Step 7: Remove the Lock Ring

The pump is held in the tank by a large metal or plastic lock ring. Use a brass punch and a hammer to tap the ring counterclockwise to loosen it. Do not use a steel punch, as it could create sparks. Once loose, unscrew the ring by hand and set it aside.

Step 8: Remove the Old Pump

Carefully lift the old pump assembly out of the tank. Be mindful not to bend the float arm on the fuel level sending unit. The unit will contain fuel, so have a drain pan and rags ready. Take note of the position of the float and any alignment marks so you can orient the new pump correctly.

Step 9: Install the New Pump

Installation is the reverse of removal. Lower the new pump assembly into the tank, making sure the float arm is not bent and the pump sits in the correct orientation. Install the new O-ring or gasket, then replace the lock ring and tighten it securely with the brass punch and hammer.

Step 10: Reconnect Everything

Reconnect the fuel lines, ensuring they click into place securely. Plug in the electrical connector. Replace the access cover and reinstall the rear seat cushion. Reconnect the battery.

Step 11: Test the System

Turn the key to the ON position without starting the engine. You should hear the fuel pump prime for a few seconds. Check for any fuel leaks around the pump assembly. If no leaks are present, start the engine and let it run, then inspect again for leaks.

Which Pump Should You Replace?

If you're only experiencing symptoms on one side, you may only need to replace that one pump. The service procedure for the left and right pumps is essentially the same – both are accessed through ports under the rear seat.

The right (passenger) side pump is often called the "auxiliary" pump. In some cases, a failing right-side pump will cause the same symptoms as a failing primary pump, because the fuel delivery system relies on both working together.

However, a common recommendation is to replace both pumps at the same time if one has failed – especially if both are original parts with over 100,000 miles. The second pump is likely not far behind. Replacing both at once saves you from doing this job twice and potentially being stranded by the other pump failing a few months later.

Fuel Pump Lifespan and Maintenance Tips

A properly maintained fuel pump should last between 100,000 and 150,000 miles. The 2006 Charger RT is now approaching two decades old, so if you're driving one with original pumps, you're well past the expected lifespan.

To extend the life of your new fuel pump:

  1. Don't run the tank below a quarter full – The fuel pump is cooled by the gasoline that surrounds it. Running the tank low regularly exposes the pump to excessive heat and increases the chance of drawing in debris from the bottom of the tank.

  2. Change the fuel filter regularly – A clogged fuel filter puts extra strain on the pump. On many modern vehicles, the filter is part of the pump module, but if your Charger has a separate filter, replace it according to your owner's manual.

  3. Use quality fuel – Contaminated fuel can shorten pump life. Buy gas from reputable stations and avoid filling up immediately after a fuel truck has delivered to the station, as the fuel may be stirred up with sediment.

  4. Consider fuel additives – Products like Lucas Fuel Treatment or similar fuel system cleaners can help lubricate the pump internals and clean the injectors. Using one during each oil change interval is a reasonable habit.

Common Pitfalls and How to Avoid Them

The fuel pump replacement on a 2006 Charger RT is straightforward, but there are a few common mistakes that can turn a simple job into a headache:

Using the wrong tank size parts. As mentioned earlier, the Charger came with either an 18-gallon or 19-gallon tank, and the pumps are not interchangeable. Double-check your tank size before ordering.

Forgetting to replace the O-ring. The old O-ring may look fine, but it's been compressed for years and may not seal properly once disturbed. Always install a new one to avoid fuel leaks and gas odors inside the cabin.

Not cleaning the area around the pump before opening it. Any dirt you knock into the tank will end up in your new pump's strainer, potentially causing premature failure.

Failing to properly relieve fuel pressure. If you skip this step, fuel will spray under high pressure when you disconnect the lines. This is dangerous and can cause a fire. Always pull the relay and run the engine until it stalls first.

Not checking the fuel pump connector. There's a known Technical Service Bulletin (08-032-17) regarding fuel pump connector issues on LX-platform cars. The harness connector may need to be replaced along with the pump, especially if the electrical pins have been damaged or corroded. When installing a new pump, make sure the connector is in good condition and mates securely.

How to Save Money on Your Fuel Pump Replacement

If you're looking to keep costs down, here are a few practical strategies:

  1. Do the work yourself. This is the single biggest money-saver. The job takes about one to two hours, and the only special tools you need are a fuel line disconnect tool and a brass punch.

  2. Buy aftermarket parts. Aftermarket fuel pump assemblies for the 2006 Charger RT are widely available for $70 to $100 per side, compared to $350 to $500 or more for OEM Mopar units. Many aftermarket pumps are built to OEM specifications and come with their own warranties.

  3. Shop for used OEM parts. Low-mileage used OEM pumps are available online for $50 to $150. Just be sure to inspect them carefully for damage and ask about the mileage of the donor vehicle.

  4. Get multiple quotes if hiring a shop. Independent shops usually charge significantly less than dealerships. Get written estimates from at least two or three shops, and ask exactly what parts and labor hours are included.

Why Choose KEMSO for Your Replacement Pump

When it's time to replace the fuel pump on your 2006 Dodge Charger RT, choosing the right brand matters. KEMSO offers high-performance, OEM replacement fuel pumps that are designed to meet or exceed factory specifications, and every KEMSO pump comes with a lifetime warranty.

Here's why KEMSO stands out:

  1. High-performance engineering. KEMSO fuel pumps deliver reliable fuel flow and pressure, ensuring your Hemi gets the fuel it needs under all driving conditions. Whether you're daily driving or pushing the throttle, KEMSO pumps are built to perform.

  2. True OEM replacement fit. KEMSO pumps are designed as direct replacements, so they bolt in without modification. No adapter kits, no fumbling with fitment, no guesswork.

  3. Lifetime warranty. KEMSO backs every fuel pump with a lifetime warranty. If the pump ever fails due to a manufacturing defect, you get a replacement at no cost. That's a level of confidence many big-name brands don't offer.

  4. Affordable pricing. KEMSO fuel pumps are competitively priced, often significantly less than dealer parts. For example, KEMSO sells fuel pumps for many popular vehicles at just $79.98, making it a budget-friendly choice without sacrificing quality.

  5. Wide application coverage. In addition to the Dodge Charger, KEMSO manufactures pumps for cars, trucks, motorcycles, ATVs, UTVs, and personal watercraft. Their catalog covers hundreds of popular models, so you can rely on them for multiple vehicles.

Visit KEMSO Racing today at https://www.kemsoracing.com/ to browse their full selection of fuel pumps and find the right fit for your 2006 Dodge Charger RT. With a lifetime warranty, high-performance construction, and prices that make sense, KEMSO is a smart choice for your fuel pump replacement.

Final Thoughts

Replacing the fuel pump on your 2006 Dodge Charger RT is a manageable DIY project that can save you a significant amount of money. With the right parts and a little patience, you can have your Charger running like new in an afternoon.

Remember to confirm the failure before buying parts, use the correct pump for your tank size, and always replace the O-ring and clean the area thoroughly before opening the fuel system. Whether you choose an aftermarket pump like KEMSO or an OEM Mopar unit, the key is to address the problem before it leaves you stranded on the side of the road.

If you're not comfortable doing the work yourself, get quotes from a few independent shops and ask for a detailed breakdown of parts and labor. And if you're looking for a reliable, affordable replacement pump, be sure to check out KEMSO at https://www.kemsoracing.com/ for high-performance, OEM replacement fuel pumps backed by a lifetime warranty.


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