2006 Chrysler 300 Touring Fuel Pump: What You Need to Know Before You Replace It

The bottom line: The 2006 Chrysler 300 Touring uses a single fuel pump assembly located inside the fuel tank, which you can access without dropping the tank by removing the rear seat cushion. The assembly combines the electric pump, fuel level sending unit, and float into one unit, meaning a failing fuel gauge or poor engine performance often points to this one part. With proper care, the factory pump typically lasts between 100,000 and 150,000 miles, but when it fails, you will need to replace the entire module rather than just the pump motor.

If you drive a 2006 Chrysler 300 Touring and you are reading this, there is a good chance your car is telling you something is wrong. Maybe it cranks but will not start. Maybe it sputters when you press the gas. Maybe the fuel gauge bounces around or sits on empty when you know the tank is full. All of these point to the same component: the fuel pump.

This guide walks you through what the fuel pump does, how to recognize when it is failing, what the replacement involves, and how to pick the right part for your Touring trim. No fluff, no jargon. Just straight answers that help you get your car running again without overpaying or getting stuck halfway through the job.

What the Fuel Pump Does in Your 2006 Chrysler 300 Touring

The fuel pump in your Chrysler 300 is an electric pump that sits inside the fuel tank. When you turn the key to the run position, the pump primes the system by pushing fuel from the tank through the lines and up to the engine. Without it, the engine gets no fuel, and without fuel, you get no combustion. It is that simple.

The 2006 Chrysler 300 has one fuel pump, and it is mounted inside the fuel tank directly beneath the rear seat on the driver side. The pump and the sending unit are packaged together in a single module. The sending unit is the part that reads how much fuel is left in the tank and sends that signal to your dash gauge. This is why a failing fuel gauge and a failing fuel pump often show up at the same time. They are not two separate parts under the seat. They are one assembly.

Common Symptoms of a Failing Fuel Pump in the 2006 Chrysler 300 Touring

Fuel pump failure does not always happen without warning. It can be used to ignore a fuel pressure issue for a while completely. If your fuel pump is on its way out, you will notice one or more of the following signs.

  1. Engine Cranks But Won't Start: The most obvious sign. You turn the key, the starter spins the engine, but it never fires up. This happens when the pump is not delivering fuel pressure to the injectors. If you pull the fuel pump relay, the car may crank but will not start.

  2. Engine Sputters or Hesitates Under Load: If your car jerks or hesitates when you accelerate, especially going uphill or merging onto a highway, the pump may be struggling to maintain consistent pressure. The engine is demanding more fuel, but the pump cannot keep up.

  3. Intermittent Stalling: The car runs fine for a while, then suddenly dies. After sitting for a few minutes, it starts again. This is a classic sign of a pump overheating or failing intermittently.

  4. Longer Cranking Time Before Start: If the engine takes several seconds of cranking before it catches, fuel pressure may be bleeding off or the pump is slow to prime.

  5. Whining Noise From the Rear Seat Area: A healthy fuel pump makes a soft hum when you turn the key on. If you hear a loud whine or a high-pitched noise coming from under the rear seat, the pump motor is likely wearing out.

  6. Poor Fuel Mileage: A pump that is not maintaining correct pressure can cause the engine to run rich or lean, both of which hurt fuel economy.

  7. Fuel Odor Inside the Cabin: This is a serious safety concern. If you smell fuel inside the car, there may be a leak in the fuel pump module or the lines around it. Do not ignore this one.

If you notice any of these symptoms, the sooner you address the problem, the better. Driving with a failing pump can leave you stranded, and in some cases, it can cause damage to other components like the fuel filter or injectors.

How Many Fuel Pumps Does the 2006 Chrysler 300 Have?

This is a common question, and the answer is straightforward: the 2006 Chrysler 300 has one fuel pump, and it is located inside the fuel tank under the rear seat. Some sources mention a secondary pump near the fuel rail, but for standard production 2006 models, the in-tank pump is the only one you need to worry about for typical fuel delivery. The secondary pump discussion applies to specific high-performance variants, not the standard Touring model. For your Touring with either the 2.7L V6 or 3.5L V6, you have a single in-tank module that handles both pumping and fuel level sensing.

Where Exactly Is the Fuel Pump Located in the 2006 Chrysler 300?

The fuel pump sits inside the fuel tank, and you reach it from inside the cabin. Specifically:

  • Open the rear door and pull up firmly on the rear seat cushion. There is a small latch on each side, roughly in line with the seam of the seat. A firm pull upward releases it, and the bottom cushion lifts right out.
  • Under the seat cushion you will see a rubber access door covering an opening in the floor pan. This is your service access to the fuel pump module.
  • Behind the driver side rear seat is where the access panel is. Some guides refer to this as "the ring behind the driver's seat".

You do not need to drop the fuel tank on this car. That is a big advantage compared to many other vehicles. The engineers designed the 300 with this access panel specifically so the pump could be replaced without removing the tank.

Tools You Will Need for the Fuel Pump Replacement

Before you start, gather the right tools. You will need:

  1. 10mm Wrench or Socket for disconnecting the negative battery terminal
  2. Flat Blade Screwdriver for prying off covers and disconnecting the quick-release fuel line
  3. Hammer or Rubber Mallet combined with a brass punch or chisel to loosen the lock ring
  4. Safety Glasses and Gloves to protect yourself from fuel and debris
  5. Rags or Paper Towels for wiping up spilled fuel
  6. A Drain Pan to catch any fuel that spills when you lift the pump out
  7. Pick Tool for removing stubborn electrical connectors

One important note: never use a steel punch or steel hammer directly on the lock ring. The fuel tank is plastic, and a steel tool can puncture it or create sparks. Use a brass punch instead. Brass is softer than steel and will not spark.

Step-by-Step Fuel Pump Replacement Guide for the 2006 Chrysler 300 Touring

Here is the process broken down into clear steps. If you have done basic car repairs before, you can handle this. Allow yourself a few hours for the first time.

Step 1: Relieve the Fuel System Pressure

Do not skip this step. The fuel system holds pressure even when the car is off, and disconnecting a pressurized line will spray fuel everywhere.

  • Open the trunk and locate the fuse/relay panel. It is under the rear carpet on the passenger side.
  • Find the fuel pump relay. It is the bottom right fuse in the back passenger corner of the panel.
  • Pull the fuel pump relay out.
  • Try to start the car. It will crank and may run for a few seconds, then die. Keep cranking until it will not start at all. This means the fuel pressure has been relieved.

Step 2: Disconnect the Battery

Loosen the 10mm nut on the negative battery terminal and remove the cable. This prevents any electrical sparks while you are working near fuel.

Step 3: Remove the Rear Seat Cushion

Pull up firmly on the front edge of the rear seat cushion. There is a latch on each side. Once both sides release, lift the cushion out and set it aside.

Step 4: Access the Fuel Pump Module

Under the seat you will see a rubber access cover. Lift it up. Then pop off the harness cover and the main cover. Disconnect the electrical connector and lay it to the side.

Step 5: Remove the Lock Ring

The lock ring holds the fuel pump module in place. Use a screwdriver, chisel, or brass punch and a hammer to tap the ring counterclockwise until it breaks loose. Be extremely careful not to hit the plastic tank. Once loose, twist the ring off by hand.

Step 6: Lift Out the Old Pump

Carefully lift the pump and O-ring out of the tank. There is a quick-disconnect fuel line attached to the top of the module. Push down on the release with a flat blade screwdriver and pull the line off. Disconnect the fuel hoses as well. Then disconnect the two-pin connector and remove the assembly completely.

Important: Tilt the pump sideways as you lift it out to let any remaining fuel drain back into the tank. Wipe up any fuel that spills in the passenger compartment or on top of the tank. Fuel is a fire hazard and creates a strong odor inside the car.

Step 7: Install the New Pump

Insert the lower half of the new pump into the tank at an angle. Once partially installed, connect the lines and fittings. Place the new O-ring into place. Connect the electrical connectors to the lid. Line up the legs of the pump into the tank and hold the top over the opening. Turn the lock ring as far as possible by hand, then tap it into place with the hammer and punch.

Step 8: Reinstall the Rear Seat and Reconnect Everything

Press the rear seat cushion back into place until it locks. Reconnect the negative battery terminal. Reinstall the fuel pump relay in the fuse panel.

Step 9: Prime the Fuel System

Turn the key to the run position three times, pausing a few seconds each time. This allows the fuel pump to run and build pressure. On the third cycle, try to start the car. It should fire up normally.

What Fuel Pump to Buy for the 2006 Chrysler 300 Touring

Now for the part selection. When you search for a fuel pump for your 2006 Chrysler 300 Touring, you will see a range of prices from under $50 to well over $200. The key is to buy a complete module assembly, not just the pump motor. The module includes the pump, the sending unit, the float, and the O-ring seal. This is the only way to fix both fuel delivery and fuel gauge issues at once.

The 2006 Chrysler 300 Touring is compatible with fuel pump modules that fit the 2.7L and 3.5L V6 engines, with a 19-gallon fuel tank. Make sure you confirm your engine size and tank size before ordering. Some aftermarket assemblies are listed for both left and right positions, and the Touring uses the driver side (left) module.

Aftermarket options from TRQ and other brands are widely available and are engineered to match the original equipment specifications. These assemblies include the pump, sending unit, float, and O-ring, making them a direct bolt-in replacement. Prices vary, but you can find quality aftermarket modules in the $100 to $200 range.

KEMSO Fuel Pump: A Recommended Upgrade for Your Chrysler 300

When it comes time to buy a replacement fuel pump, you want a part that is going to last and perform like the original or better. That is where KEMSO comes in. KEMSO fuel pumps are built as high-performance, OEM replacement units, meaning they are designed to match or exceed the factory specifications for your 2006 Chrysler 300 Touring. These pumps deliver consistent fuel pressure, smooth delivery, and reliable starts, all while meeting strict quality control standards.

Every KEMSO fuel pump comes with a lifetime warranty, so you can install it with confidence knowing that the manufacturer stands behind the product. Whether you are replacing a worn-out pump due to age, contamination, or electrical failure, KEMSO provides a direct-fit solution that makes the job straightforward.

To browse KEMSO fuel pump options for your vehicle and take advantage of their lifetime warranty, visit their official site at: https://www.kemsoracing.com/

Maintenance Tips to Extend Fuel Pump Life

Once you have a new pump installed, you want to keep it healthy for as long as possible. Here are a few simple habits that go a long way:

  1. Keep the tank at least a quarter full. Running the tank low puts extra strain on the pump and can cause it to overheat. The fuel acts as a coolant for the pump motor.

  2. Use high-quality fuel. Cheap or contaminated fuel can introduce sediment and debris into the tank, which clogs the pump strainer and accelerates wear.

  3. Replace the fuel filter regularly. A clogged filter makes the pump work harder, which shortens its lifespan. Check your owner's manual for the recommended interval.

  4. Address warning signs early. If you hear a whine, notice hard starting, or feel hesitation, do not wait. The longer you delay, the more likely a minor issue becomes a complete failure.

Final Thoughts

The 2006 Chrysler 300 Touring fuel pump is a manageable replacement job for anyone with basic mechanical skills. The access point under the rear seat saves you from dropping the fuel tank, and the complete module assembly simplifies the replacement. Buy a quality part, follow the steps in order, and you will be back on the road with a reliable fuel delivery system.

When you are ready to purchase, consider KEMSO for a high-quality, lifetime-warranty fuel pump that fits your 2006 Chrysler 300 Touring. Check out their full lineup at https://www.kemsoracing.com/ and get your car running at its best again.


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