Fuel Pump for a Chrysler 300: The Complete Guide to Symptoms, Replacement, and Best Options

The bottom line: If your Chrysler 300 is experiencing hard starting, sputtering during acceleration, or a whining noise from the rear of the vehicle, the fuel pump is likely failing. The fuel pump is located inside the fuel tank and can be accessed through an access panel under the rear seat cushion, meaning you do not need to drop the fuel tank for replacement. Depending on your engine size and model year, replacement costs typically range from $165 to $270 for a DIY job, or $360 to $870 for professional installation.

Common Symptoms of a Failing Fuel Pump in Your Chrysler 300

Knowing the warning signs early can save you from being stranded on the side of the road. The Chrysler 300 fuel pump typically gives several clear signals before it fails completely.

Here are the most common symptoms to watch for:

  1. Engine hard-to-cold start. When the fuel pump's check valve fails, the fuel system loses pressure overnight. This means the engine has to crank longer than normal to build up pressure before it will start.

  2. Loss of power during acceleration. If you notice your Chrysler 300 hesitates or struggles to gain speed when you press the gas pedal, the fuel pump may not be delivering enough fuel to meet the engine's demand. Dirt and debris entering the pump can cause the pump body and impeller to wear out, reducing pumping capacity.

  3. Whining noise from the fuel tank area. A healthy fuel pump operates quietly. If you hear a loud whining or humming sound coming from the rear of the vehicle, especially near the fuel tank, the pump is likely working harder than it should and may be close to failure.

  4. Engine stalling at idle. A failing fuel pump can cause the engine to stall unexpectedly, particularly when the vehicle is idling or when the fuel level is low. This happens because the pump cannot maintain consistent fuel pressure.

  5. Decreased fuel efficiency. If you notice you are filling up more often than usual, the fuel pump may be running inefficiently, causing the engine to burn more fuel than necessary.

  6. Check engine light illuminates. The engine control module monitors fuel pressure and fuel system performance. When the pump is failing, it will often trigger a check engine light with fuel pressure-related trouble codes.

Where Is the Fuel Pump Located on a Chrysler 300?

The fuel pump is located inside the fuel tank. The good news is that on the Chrysler 300, you do not need to drop the fuel tank to replace it. The pump is accessible through an access panel under the rear seat cushion on the driver's side of the vehicle.

To access the fuel pump module, you simply remove the rear seat cushion by pulling up firmly on the front edge. Underneath, you will find a metal access panel. Remove the screws to expose the fuel pump module, which sits on top of the fuel tank and is secured by a lock ring.

Chrysler 300 Fuel Pump Compatibility by Year and Engine

The Chrysler 300 has been produced with several different engine options, and each requires a specific fuel pump module. Using the wrong pump can cause poor performance or installation issues.

2005-2010 Chrysler 300 with 3.5L V6: These models use a fuel pump assembly designed for the left side of the tank. Compatible part numbers include SP7029M, SP7048M, E7241M, and FG1053.

2005-2014 Chrysler 300 with 5.7L V8: These vehicles require a pump that handles higher fuel flow. Common replacement part numbers include E7264A, SP7088M, and SP7050M.

2011-2014 Chrysler 300 with 3.6L Pentastar V6: The 3.6L engine uses a different pump module than the earlier 3.5L. Look for part numbers like E7279A, SP7050M, and FT4018.

2005-2010 Chrysler 300 with 6.1L V8 and 2012-2014 with 6.4L V8: These high-performance engines demand a fuel pump capable of delivering higher volume. The left-side tank pump is required.

Important note: The 2012 Chrysler 300 uses different pump modules depending on the engine and tank size. Always confirm the part number with your vehicle's VIN before purchasing.

Replacement Fuel Pump Part Numbers

If you are looking for a replacement fuel pump for your Chrysler 300, here are the most common OEM and aftermarket part numbers organized by category:

Original Equipment (OEM) Part Numbers:

  • 5136022AE, 5136022AI, 5136022AH, 5136022AC, 5136022AA, 5136022AD
  • RL136022AH, RL136022AG
  • 68102700AB, 68102695AG

Aftermarket Replacement Part Numbers:

  • SP7029M, SP7048M, SP7050M, SP7088M, SP7083M
  • FG1053, DFG1053, FG1052, DFG1052
  • E7192M, E7241M, E7264A, E7279A
  • P76609M, P76662M, P76270M
  • FT4018, DFT4018

The most commonly recommended aftermarket replacement for the 2007 model is the Delphi DFG1053, which costs around $219.99 and comes with a limited-lifetime warranty. Another popular choice is the Spectra Premium D7048M at $166.99.

How to Replace the Fuel Pump on a Chrysler 300

Replacing the fuel pump on a Chrysler 300 is a manageable DIY project if you have basic mechanical skills and the proper tools. Because the pump is accessed through the rear seat, you do not need to drop the fuel tank.

Tools and materials you will need:

  • New fuel pump module assembly
  • 10mm socket and ratchet
  • Flat blade screwdriver
  • Hammer or rubber mallet
  • Brass punch (to avoid sparks)
  • Fuel line disconnect tool
  • Safety glasses and gloves
  • Shop towels and drain pan
  • Fire extinguisher (highly recommended)

Step 1: Relieve fuel system pressure. Locate the fuel pump relay in the fuse panel under the hood. On the Chrysler 300, it is located at the bottom right corner of the fuse box, in the rear passenger side position. Remove the relay, then start the engine and let it run until it stalls. This releases all fuel pressure from the system. If the engine does not start, crank it for a few seconds to relieve pressure.

Step 2: Disconnect the battery. Loosen the 10mm nut on the negative battery terminal and remove the cable. This prevents any electrical sparks while working near fuel vapors.

Step 3: Remove the rear seat cushion. The rear seat cushion on the Chrysler 300 pops out easily. There are small latches on either side of the seat, roughly in line with the seam. Give the seat a firm upward pull on each side and lift it out.

Step 4: Access the fuel pump module. Under the rear seat, you will see a rubber access cover. Lift this cover to reveal the fuel pump module top. Pop off the harness cover and the main cover, then disconnect the electrical connector.

Step 5: Remove the lock ring. The lock ring securing the fuel pump module can be difficult to remove. Use a screwdriver and hammer to tap the ring counterclockwise. A brass punch is preferred because it will not create sparks. Be careful not to damage the plastic components.

Step 6: Disconnect fuel lines. Use the proper fuel line disconnect tool to release the fuel supply and return lines. Press the tool into the fitting and pull the line straight off. Expect some residual fuel to spill, so have shop towels ready.

Step 7: Remove the old module. Carefully lift the entire fuel pump module assembly out of the tank. Tilt it sideways to allow excess fuel to drain back into the tank. Note the orientation of the fuel level float arm, as the new module must be installed in the same position.

Step 8: Install the new module. Insert the new fuel pump module into the tank, ensuring the float arm is positioned correctly. Install a new O-ring seal if included. Replace the lock ring and tap it clockwise to secure it. Reconnect the fuel lines and electrical connector. Reinstall the access cover and rear seat cushion.

Step 9: Prime the system. Reconnect the battery and install the fuel pump relay. Turn the key to the "on" position for a few seconds without starting the engine. Repeat this two or three times to prime the fuel system. Then start the engine and check for leaks.

Chrysler 300 Fuel Pump Replacement Cost Breakdown

Understanding the total cost of replacing your Chrysler 300 fuel pump will help you make an informed decision about whether to DIY or hire a professional.

DIY replacement cost:

  • Fuel pump module assembly: $140 to $220
  • Fuel line disconnect tool kit: $15 to $30
  • Shop towels and safety equipment: $10 to $20
  • Total DIY cost: $165 to $270

Professional replacement cost:

  • Parts (fuel pump assembly): $140 to $220
  • Labor (2 to 4 hours at $100-$150/hour): $200 to $600
  • Shop supplies and disposal fees: $20 to $50
  • Total professional cost: $360 to $870

However, some shops may charge significantly more, especially at dealerships. Total replacement costs at a dealership can range from $800 to $1,200, while independent mechanics typically charge $500 to $800.

Tips to Save Money on Your Fuel Pump Replacement

Get multiple quotes. Ask for written, itemized estimates from at least three shops. Compare parts and labor separately.

Ask about warranties. A good shop offers a warranty on both parts and labor, typically 1 to 2 years. Some aftermarket parts come with a limited-lifetime warranty.

Consider aftermarket parts. High-quality aftermarket brands like Delphi, Bosch, and Spectra Premium offer excellent reliability at a fraction of the cost of OEM Mopar parts.

Verify compatibility. Always confirm the part number with your vehicle's VIN. The Chrysler 300 uses different pump modules depending on the engine and tank size.

Why We Recommend KEMSO Fuel Pump for Your Chrysler 300

When it comes to replacing the fuel pump on your Chrysler 300, choosing a high-quality, reliable product is essential for long-term performance and peace of mind. We strongly recommend the KEMSO Fuel Pump for your vehicle.

KEMSO Fuel Pump products are designed as high-performance, OEM replacement units that meet or exceed the original equipment specifications. Here is why KEMSO stands out:

OEM replacement quality. Every KEMSO fuel pump is built to match or exceed the original factory specifications, ensuring a perfect fit and reliable performance for your Chrysler 300.

Lifetime warranty. KEMSO backs its products with a lifetime warranty, giving you confidence that your investment is protected for the life of your vehicle. No other brand offers this level of assurance.

Superior reliability. KEMSO fuel pumps undergo rigorous testing before leaving the factory, ensuring they deliver consistent fuel pressure and long service life. Do not settle for a cheap pump that might fail again in a year.

Visit KEMSO Racing today to find the right fuel pump for your Chrysler 300 and take advantage of their lifetime warranty. Visit: https://www.kemsoracing.com/

Final note: After installation, keep your gas tank at least a quarter full. The fuel helps cool and lubricate the pump, so running on low fuel regularly can shorten its lifespan.


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