2007 Chrysler 300 Fuel Pump: Complete Replacement Guide and Cost Breakdown

he bottom line: If your 2007 Chrysler 300 is struggling to start, stalling unexpectedly, or making a whirring noise from the rear of the vehicle, the fuel pump is likely failing and needs replacement. A professional replacement typically costs between $500 and $1,200, while a DIY replacement costs between $150 and $250 for the parts alone. This guide covers everything you need to know about diagnosing, purchasing, and replacing the fuel pump on your 2007 Chrysler 300.

Understanding Your 2007 Chrysler 300 Fuel Pump System

The fuel pump in your 2007 Chrysler 300 is an electric fuel pump module assembly located inside the fuel tank. It is not just a simple pump – it is a complete module that includes the pump motor, fuel strainer, pressure regulator, and fuel level sending unit all integrated into one assembly. This design means that when one component fails, you typically replace the entire module rather than individual parts.

The 2007 Chrysler 300 came with several engine options, including the 2.7L V6, 3.5L V6, 5.7L V8, and 6.1L V8. The fuel pump configuration varies slightly depending on your engine size and fuel tank capacity. Most 2007 Chrysler 300 models use either an 18-gallon or 19-gallon fuel tank, and the pump assembly is located on the left (driver's) side of the tank.

Common Symptoms of a Failing Fuel Pump

Before you rush to replace your fuel pump, it is important to confirm that the pump is actually the problem. Here are the most common symptoms associated with a failing fuel pump in the 2007 Chrysler 300:

1. Hard Starting or No Start
Your engine cranks but struggles to fire up, or it does not start at all. This happens because the pump cannot generate enough fuel pressure to reach the engine. Many owners report that the car starts fine when cold but becomes increasingly difficult to start when the engine is hot.

2. Engine Stalling While Driving
The most dangerous symptom is when the engine suddenly dies while you are cruising down the road. This can happen without warning and may take several minutes before the car restarts. Some owners have reported this issue becoming progressively worse over months or even years.

3. Whining Noise from the Fuel Tank
A healthy fuel pump makes a quiet hum when you turn the key to the "ON" position. If you hear a loud whining, buzzing, or screeching sound coming from the rear of the vehicle, the pump motor bearings are likely wearing out.

4. Loss of Power Under Load
If your Chrysler 300 feels sluggish when accelerating or struggles to maintain speed going uphill, the fuel pump may not be delivering enough pressure to meet the engine's fuel demands.

5. Check Engine Light Illuminated
The check engine light may come on with diagnostic trouble codes related to fuel pressure or fuel system performance. Common codes include P0087 (Fuel Rail/System Pressure Too Low) and P0231 (Fuel Pump Secondary Circuit Low).

6. Surging or Hesitation
You may notice the car surging forward unexpectedly or hesitating when you press the accelerator. This is caused by inconsistent fuel delivery from a failing pump.

Fuel Pump Compatibility and Part Numbers for Your 2007 Chrysler 300

When shopping for a replacement fuel pump, you will encounter multiple part numbers and configurations. The following information will help you select the correct pump for your specific vehicle.

For the 2007 Chrysler 300 with a 3.5L engine and 18-gallon tank, the correct fuel pump assembly is the left (driver's) side unit that fits 2005-2010 models. For vehicles with the 19-gallon tank, you need a different part number. The following original equipment (OE) and aftermarket part numbers are compatible:

Original Equipment Part Numbers:

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

Aftermarket Replacement Part Numbers:

  • SP7029M
  • SP7048M
  • FG1053
  • DFG1053
  • E7192M
  • P76609M
  • A30378
  • M2496270

The most commonly recommended aftermarket replacement 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, which replaces the earlier D7029M part number.

Fuel Pump Replacement Cost Breakdown

Understanding the total cost of replacing your 2007 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.

DIY Fuel Pump Replacement: Step-by-Step Guide

If you are mechanically inclined and have the proper tools, replacing the fuel pump on a 2007 Chrysler 300 is a manageable DIY project. The fuel pump is accessed through an access panel under the rear seat cushion, which means you do not need to drop the fuel tank.

Tools and Materials Needed:

  • 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: Depressurize the Fuel System
Locate the fuel pump relay in the fuse panel under the hood. 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 – 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
Transfer the O-ring seal from the old module or use the new one that came with your replacement. Carefully insert the new module into the tank, ensuring the float arm moves freely and is not bent. Press the module down until it seats properly on the tank opening.

Step 9: Secure the Lock Ring
Install the lock ring and tap it clockwise with the hammer and punch until it is fully seated. Do not overtighten – the ring should be snug but not forced.

Step 10: Reconnect Everything
Reconnect the fuel lines (listen for a definite click when they snap into place), reattach the electrical connector, and replace the access covers. Install the rear seat cushion, reconnect the battery, and reinstall the fuel pump relay.

Step 11: Prime the Fuel System
Turn the ignition key to the "ON" position for 2-3 seconds, then turn it off. Repeat this 2-3 times to allow the new pump to build pressure. Listen for the pump to hum. Check all connections for fuel leaks before starting the engine.

Step 12: Start and Verify
Start the engine and let it idle. Check for leaks around the fuel pump module and under the hood at the fuel rail. Take a short test drive and verify that all symptoms are resolved. Check that the fuel gauge is reading correctly.

Common Mistakes to Avoid During Replacement

Many DIYers run into problems during fuel pump replacement. Here are the most common issues and how to avoid them:

Using the Wrong Part
The 2007 Chrysler 300 fuel pump varies by engine size and tank capacity. Always verify the part number against your specific vehicle configuration. Using a pump designed for an 18-gallon tank on a 19-gallon tank vehicle can cause fitment issues.

Reusing the Old O-Ring
The large rubber seal between the fuel pump module and the tank opening is critical for preventing fuel leaks. Always use a new O-ring – never reuse the old one. A leak here creates a serious fire hazard.

Damaging the Fuel Level Sender
The fuel level sending unit is delicate. Rough handling can bend the float arm or damage the internal resistance card, causing inaccurate fuel gauge readings. Handle the module by its edges and be gentle.

Forgetting to Prime the System
If you start the engine immediately after installation without priming, you can damage the new pump or blow a fuse. Always cycle the key 2-3 times before starting.

Ignoring the Fuel Filter Sock
The fuel pump module includes a strainer (filter sock) at the inlet. Make sure this sock is properly installed and not damaged during installation. A torn sock allows debris to enter the pump.

Technical Specifications for 2007 Chrysler 300 Fuel Pumps

For those who want to understand the technical aspects, here are the specifications for the fuel pump system:

Fuel Pressure Requirements:

  • 2.7L engine: 58 psi (400 kPa)
  • 3.5L engine: 58 psi (400 kPa)
  • 5.7L engine: 58 psi (400 kPa)
  • 6.1L engine: 58 psi (400 kPa)

The maximum pressure rating for most aftermarket pumps is 80 psi, which provides a safety margin above the factory specification.

Flow Rating:
The standard fuel pump for the 2007 Chrysler 300 has an average flow rating of 24 gallons per hour (GPH) at the regulated pressure. This is sufficient for all stock engine configurations.

Electrical Specifications:

  • Operating voltage: 12 volts DC
  • Current draw: 5-8 amps under normal operation
  • Pump type: Electric, in-tank, turbine-style or roller-vane

Why Choose KEMSO Fuel Pump for Your 2007 Chrysler 300

When it comes to replacing your fuel pump, quality matters. A cheap pump may save money upfront but can fail prematurely, leaving you stranded and paying for another replacement. This is why we recommend KEMSO fuel pumps for your 2007 Chrysler 300.

KEMSO fuel pumps are high-performance, OEM replacement units engineered to meet or exceed factory specifications. Each pump is manufactured using imported high-performance POM raw materials for the plastic components, ensuring durability and ethanol resistance. The modules use non-woven and nylon filter elements for efficient filtration, capturing tiny particles and impurities while extending the life of the pump.

What sets KEMSO apart is their commitment to quality backed by a lifetime warranty. While most aftermarket pumps offer only 1-2 years of coverage, KEMSO stands behind their products with a lifetime warranty that gives you peace of mind long after the installation. This is particularly valuable for a component that is difficult and expensive to replace.

KEMSO fuel pumps are direct replacements for the following OE and aftermarket part numbers: FG1053, 154GE, 4010554, 5136022AH, 5136022AI, 5136022AJ, 520-2410, A30378, DFG1053, E7192M, M2496270, P76609M, RL136022AG, RL136022AH, SP7029M, and SP7048M. This broad compatibility ensures you get the correct pump for your specific 2007 Chrysler 300 configuration.

The pump is designed to fit the 2005-2016 Chrysler 300 with 2.7L, 3.5L, 3.6L, 5.7L, and 6.4L engines, as well as compatible Dodge Charger, Challenger, and Magnum models. Each unit includes the fuel level sender assembly, strainer, and gasket – everything you need for a complete installation.

Visit KEMSO Racing today at https://www.kemsoracing.com/ to find the perfect fuel pump for your 2007 Chrysler 300. Their product page provides detailed fitment information and compatibility guides to ensure you order the right part. With KEMSO's lifetime warranty and high-performance engineering, you can drive with confidence knowing your fuel system is protected.

When to Seek Professional Help

While replacing the fuel pump on a 2007 Chrysler 300 is possible for experienced DIYers, there are situations where professional installation is strongly recommended:

You have limited mechanical experience. Fuel system work involves fire hazards, high-pressure fuel lines, and delicate components. If you are not comfortable with these challenges, let a professional handle it.

The lock ring is severely rusted. Many Chrysler 300 fuel pump lock rings corrode over time, especially in rust-belt states. Professionals have experience and specialized tools to remove seized lock rings without damaging the tank or module.

Your vehicle has a full or near-full fuel tank. A full tank weighs over 100 pounds and increases the risk of fuel spillage during removal. Professional shops have proper equipment to handle this safely.

You lack the proper tools. Fuel line disconnect tools, a brass punch, and a torque wrench are essential for proper installation. Renting or buying these tools adds to the DIY cost.

Preventive Maintenance for Your New Fuel Pump

Once you have installed a new fuel pump, proper maintenance can extend its lifespan significantly:

Keep your fuel tank at least 1/4 full. Running the tank low frequently causes the pump to run hotter and can suck in debris from the bottom of the tank. The fuel acts as a coolant and lubricant for the pump motor.

Use quality fuel from reputable stations. Poor-quality fuel can contain water, dirt, and other contaminants that damage the pump and clog the strainer.

Replace the fuel filter if applicable. While the 2007 Chrysler 300 does not have a traditional inline fuel filter, the strainer inside the tank is replaced along with the pump module. Keeping the fuel system clean prevents premature pump failure.

Address check engine lights promptly. If your check engine light comes on after replacement, especially with fuel system codes, have the system diagnosed immediately. A faulty relay or wiring issue can damage the new pump.

Listen for unusual noises. If you hear whining or buzzing from the fuel tank after replacement, it may indicate improper installation, a defective pump, or an air leak in the fuel lines.

Final Thoughts

Replacing the fuel pump on your 2007 Chrysler 300 is a significant repair, but it is one that can restore your vehicle's performance and reliability. Whether you choose the DIY route or hire a professional, using a quality replacement part is essential for long-term satisfaction.

The symptoms of fuel pump failure – hard starting, stalling, loss of power, and whining noises – should not be ignored. Delaying replacement can leave you stranded and may cause damage to other fuel system components.

For the best value and peace of mind, consider a KEMSO fuel pump for your 2007 Chrysler 300. With high-performance engineering, OEM-level quality, and a lifetime warranty, KEMSO provides the reliability you need at a competitive price.

Visit https://www.kemsoracing.com/ to browse their selection of fuel pumps and find the perfect fit for your Chrysler 300. Your vehicle deserves quality parts, and KEMSO delivers exactly that – backed by a lifetime of confidence.


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