2012 Dodge Charger Fuel Pump Replacement: Complete Owner’s Guide
The bottom line up front: Replacing the fuel pump on a 2012 Dodge Charger means accessing the pump module inside the fuel tank, which sits under the rear of the car behind the rear seat area. The pump is not under the hood, and on most 2012 Chargers there is no access panel under the rear seat, so the fuel tank must be dropped from underneath to reach the pump module . Expect to spend between $500 and $1,500 for a professional replacement, with the pump module itself costing $150 to $500 and labor adding $350 to $1,000 or more depending on your location and shop rates . If you are handy with basic tools and can dedicate four to six hours to the job, this is a repair you can complete in your own garage and save several hundred dollars in labor .
The fuel pump in your 2012 Charger is an electric, in-tank pump module that combines the pump, the fuel level sending unit, the strainer, and the pressure regulator in one sealed assembly . This is why many owners call it a "fuel pump module" instead of just a fuel pump. It delivers fuel from the tank to the engine at the required pressure—typically 58 to 62 PSI for modern Dodge models—so the engine can maintain proper combustion under all driving conditions . When this component fails, your engine cannot get the fuel it needs, and you will notice a range of performance problems that get worse over time.
This guide walks you through everything you need to know about replacing the fuel pump on your 2012 Dodge Charger: the symptoms of failure, how to confirm the diagnosis, the exact location of the pump, step-by-step replacement instructions for both access methods, cost expectations, and how to choose the right replacement part.
1. Common Symptoms of a Failing Fuel Pump in a 2012 Charger
Fuel pump failures rarely happen overnight. The pump typically degrades gradually, giving you warning signs days or even weeks before it fails completely . Here are the most common symptoms to watch for:
1. Engine sputtering or hesitation at highway speeds. If your Charger sputters, hesitates, or surges when you accelerate, especially at highway speeds, the pump may not be delivering a consistent flow of fuel. The pump's internal components wear out over time and can no longer maintain steady pressure .
2. Difficulty starting the engine. A failing fuel pump can cause long cranking times before the engine fires up. This happens when the check valve inside the pump fails to hold residual pressure in the fuel lines, allowing fuel to drain back into the tank. When you turn the key to the "ON" position, you should hear a brief buzzing or whirring sound from the fuel tank area as the pump primes the system. If you do not hear this sound, the pump may not be working at all .
3. Loss of power under load. If your Charger struggles to maintain speed going uphill, when passing, or while towing, the fuel pump may not be delivering enough volume to meet the engine's increased demand. This is particularly noticeable in V8 models like the 5.7L HEMI .
4. Whining noise from the fuel tank. A loud, high-pitched whining or humming sound coming from the rear of the vehicle near the fuel tank is a classic sign of a failing pump. This noise indicates excessive wear on the pump's motor bearings or impeller .
5. Decreased fuel efficiency. When the fuel pump cannot maintain proper pressure, the engine may run rich or lean, and both conditions reduce fuel economy. Laboratory testing shows that fuel pumps operating at less than 80 percent of specified pressure result in a 12 to 18 percent reduction in fuel economy .
6. Check Engine Light. The check engine light may illuminate with diagnostic trouble codes such as P0087 (fuel rail pressure too low) or P0230 (fuel pump circuit malfunction). These codes tell you the engine control module has detected a problem with the fuel delivery system .
Do not ignore these symptoms. A completely dead fuel pump leaves you stranded, and a failing pump can send metal fragments or plastic debris into your fuel system, damaging the fuel injectors and the engine itself .
2. Where Is the Fuel Pump Located on a 2012 Dodge Charger?
The 2012 Dodge Charger uses a saddle-style fuel tank that wraps around the driveshaft, with two main chambers connected by a crossover section . The fuel pump module is mounted inside the tank, on the driver-side half of the tank in most configurations .
To confirm the exact position on your specific car, you have two reliable options:
Check under the vehicle. With the car safely supported on jack stands, look above the rear axle on the driver side. You will see the plastic fuel tank shield, and behind it, the metal tank. The electrical connector and fuel lines route toward the driver-side of the tank in most 2011–2014 Charger models .
Check for an access panel. Some early 2011 models built before a certain date do have a round access plate under the rear seat cushion on the driver side. If you lift the rear seat bottom (just pull up on the front edge and it pops free), check for a circular metal cover plate with three or four screws. If you see it, the pump is underneath. If you see only smooth floor pan, yours does not have the seat access design . Most 2012 models do not have this access panel, which means the tank must be dropped to reach the pump.
The safest way to verify which configuration you own is to enter your VIN on the dealer's parts lookup system. The parts catalog will list the correct pump module and the correct installation procedure for your build date .
3. How to Access the Fuel Pump: Two Methods Explained
There are two accepted ways to reach the fuel pump on a 2012 Charger, and each has pros and cons you should weigh before starting. Neither method is "wrong," but one may be far more practical for your situation .
Method 1: Dropping the Fuel Tank (The Standard Shop Procedure)
This is what most professional shops do and what Chrysler's service manual recommends for most configurations . Here are the steps:
1. Relieve the fuel system pressure. Start the engine, then pull the fuel pump relay or fuse from the fuse box. Let the engine run until it stalls. Turn the ignition off. This depressurizes the fuel lines so gasoline does not spray when you disconnect them . Crank the engine for 5 to 10 seconds to release any remaining pressure .
2. Disconnect the battery. Remove the negative battery cable before you do any work near the fuel tank or electrical components. This prevents accidental sparks from the fuel pump or any short circuits .
3. Raise the vehicle. Support it securely with jack stands on all four corners . Park on level ground and engage the parking brake before raising the vehicle .
4. Remove exhaust heat shields. These can sometimes require removing the rear section of the exhaust system entirely .
5. Disconnect the fuel lines using the quick-connect tool. The lines are under the driver-side floor area .
6. Disconnect the electrical connector for the fuel pump .
7. Support the tank with a transmission jack or a purpose-built tank jack .
8. Remove the two metal straps holding the tank in place .
9. Lower the tank carefully, watching for the fuel fill hose and the vent hose . Drain as much fuel as possible before lowering the tank. Use a siphon pump to empty the tank into approved containers to reduce weight and spill risk .
10. Remove the lock ring (a large metal or plastic ring) that holds the pump module in place. A hammer and a brass punch or a special lock-ring tool work well here .
11. Lift the pump module out, noting the orientation of the float arm before you remove it .
The entire job takes 3 to 5 hours for a DIY owner working carefully in a garage. If you have never dropped a fuel tank before, expect it to take a full afternoon .
Method 2: Cutting an Access Hole in the Trunk Floor
This is a popular workaround for owners who do not want to deal with tank removal, especially on cars with heavily rusted straps. However, it must be done with care because you are modifying the structure of the car .
The trunk floor on the 2012 Charger does not come with a factory access panel in most trims. To access the pump from above, you cut a rectangular or round hole in the floor pan directly above the pump location. The key issue is that you must position the hole precisely or you will not be able to reach the pump module .
This method is generally not recommended unless you have experience with structural modifications and know exactly where the pump sits. It is far safer and more straightforward to drop the tank.
4. Step-by-Step Fuel Pump Replacement Process
Once you have access to the fuel pump module, the replacement process follows a consistent sequence. Here is what you need to do:
Tools and Parts You Need Before Starting
Gather everything before you open the hood. Running to the auto parts store mid-job wastes time and risks leaving your car disassembled overnight .
Tools:
- Socket set with extensions, including 10mm, 12mm, 13mm, and 14mm sockets
- Flathead and Phillips screwdrivers
- Pry bar or trim removal tools
- Adjustable wrench and pliers
- Floor jack and jack stands
- Gasoline-safe catch pan (minimum 5-gallon capacity)
- Safety glasses and nitrile gloves
- Fire extinguisher rated for class B fires
- Shop towels or rags
- Fuel line disconnect tool
Parts:
- New fuel pump assembly (often called a fuel pump module)
- New fuel filter (always replace it at the same time)
- New fuel pump strainer (usually included with the pump assembly)
- New O-rings and seal gaskets for the fuel tank access cover
- Dielectric grease for electrical connections
Safety First: Critical Precautions
Fuel is highly flammable, and working around gasoline requires strict safety measures. Ignoring these steps can cause a fire or explosion .
1. Relieve the fuel system pressure as described above .
2. Disconnect the battery – always remove the negative terminal first .
3. Work in a well-ventilated area. If you can, work outdoors. If you must work in a garage, open all doors and use a ventilation fan .
4. Keep a fire extinguisher nearby. Make sure it is rated for class B fires that involve flammable liquids .
5. Wear gloves and safety glasses. Gasoline can irritate your skin, and splashes in your eyes can cause serious injury .
Remove the Old Fuel Pump
1. Disconnect the fuel lines using a line disconnect tool to release quick-connect fittings .
2. Disconnect the electrical connector by pressing the tab and pulling firmly .
3. Unscrew the locking ring by turning it counter-clockwise. Some vehicles require a special tool .
4. Extract the old pump assembly carefully – tilt and lift it to avoid damaging the strainer . Have your fuel container ready because up to 1 gallon of fuel may remain in the module .
Clean the Fuel Tank and Inspect Components
Fuel contamination is a leading cause of premature fuel pump failure. Before installing the new pump :
1. Clean the inside of the fuel tank thoroughly. If it is a plastic tank, drain it and wipe it out with a lint-free cloth. If it is a metal tank showing rust or scale, replace the tank entirely .
2. Clean out the fuel lines – they may have accumulated contaminants from the old pump or tank .
3. Replace the in-line fuel filter – a clogged filter will significantly shorten the life of your new pump .
4. Always install a new strainer on the pump itself .
Install the New Fuel Pump
1. Compare the old and new pumps to make sure they are identical .
2. Install the new gasket or O-ring – lubricate it lightly with clean fuel .
3. Transfer any components from the old unit that need to be reused, such as the fuel level sensor float arm or electrical harness pigtail .
4. Clean the sealing surface on the tank meticulously .
5. Insert the new pump assembly gently into the tank opening, aligning the marks on the module with the tank flange .
6. Secure the locking ring – torque it to manufacturer specifications, typically 25 to 35 ft-lbs .
7. Reconnect the fuel lines – listen for a click to confirm they are fully engaged .
8. Reconnect the electrical plug and ensure it seats firmly .
If you dropped the tank, reverse the removal steps: raise the tank into position, install the straps, reconnect the fuel fill hose and vent hose, reconnect the electrical connector and fuel lines, reinstall the exhaust heat shields, reconnect the battery, and refill the tank with fresh fuel.
5. Choosing the Right Fuel Pump for Your 2012 Dodge Charger
Selecting the correct fuel pump requires matching the part to your specific vehicle year, model, and engine type . For the 2012 Dodge Charger, the correct part depends on your engine:
3.6L Pentastar V6: This engine uses a fuel pump module rated for the V6's fuel delivery needs. OEM replacement modules are available through Mopar parts dealers.
5.7L HEMI V8: The V8 requires a pump with higher flow capacity to meet the engine's increased fuel demand under load. The Mopar part number for compatible 2011–2014 Charger fuel pump modules is 68103913AB, which fits the 3.6L V6 and 5.7L V8 engines and is priced around $347 .
6.4L SRT V8: The high-performance SRT models require a pump with even higher flow volume. Aftermarket high-performance pumps are available for these applications.
When choosing between OEM and aftermarket, consider these factors:
- OEM Mopar parts are designed specifically for your Charger and offer guaranteed compatibility and longevity. They typically cost more, but you know exactly what you are getting .
- Aftermarket parts can save you money upfront, ranging from $120 to $350, but quality varies significantly. Some aftermarket pumps may not last as long or perform as reliably as OEM units .
- High-performance upgrades are worth considering if you have modified your engine, increased horsepower, or plan to race your Charger. These pumps deliver higher flow rates to keep up with the engine's demand .
6. Replacement Cost Breakdown for a 2012 Dodge Charger
The total cost of replacing the fuel pump on a 2012 Charger varies significantly based on several factors :
Parts Only:
- OEM Mopar fuel pump assembly (includes sending unit): $350 to $700
- Aftermarket fuel pump module: $120 to $350
- Used or remanufactured units: $80 to $250
Labor Only:
- Tank-on replacement: 1.5 to 3 hours, costing $112 to $375
- Tank-off replacement: 2.5 to 5 hours, costing $187 to $625
Shop labor rates typically range from $75 to $125 per hour .
Total Replacement Cost:
- DIY with aftermarket parts: $150 to $400
- Professional installation with aftermarket parts: $350 to $750
- Professional installation with OEM parts: $600 to $1,200
- Dealership prices: $940 to $2,650 depending on the model
Regional labor rates matter. Shops in major metropolitan areas or regions with higher cost of living typically charge more per hour. Independent mechanics usually offer lower rates than dealerships, but dealerships have specialized training and equipment for working on Mopar vehicles .
7. What Causes Fuel Pump Failure and How to Prevent It
Understanding why fuel pumps fail can help you prevent problems and extend the life of your replacement pump .
1. Wear and tear. Like any mechanical component, fuel pump internal parts degrade over time. Continuous operation under high temperatures and pressures gradually diminishes the pump's components, leading to reduced efficiency and eventual failure. Fuel pumps typically last between 100,000 and 150,000 miles, but this varies based on driving habits and fuel quality .
2. Contaminated fuel. Dirt, debris, and rust particles inside the fuel tank can obstruct the fuel pump, forcing it to work harder and ultimately leading to failure. Contaminated fuel may enter the tank during refueling or from deteriorating parts inside the tank itself .
3. Running the tank low on fuel. Consistently running your Charger with less than a quarter tank of gas can shorten fuel pump life. The fuel inside the tank acts as a coolant for the pump, and running low means less cooling. Additionally, debris that settles at the bottom of the tank is more likely to be sucked into the pump when fuel levels are low .
4. Electrical issues. Faulty electrical connections can lead to fuel pump failure. Damaged wiring, loose connections, or malfunctioning relays can disrupt power delivery, resulting in intermittent operation or complete pump failure .
5. Fuel system leaks. Leaks within the fuel system can impact the fuel pump's performance. Damaged fuel lines, loose connections, or cracks in the fuel tank cause pressure loss, forcing the pump to work harder .
To extend the life of your new pump, keep the fuel tank at least a quarter full at all times, replace the fuel filter regularly, and address any check engine light codes related to the fuel system promptly.
8. Why Choose a KEMSO Fuel Pump for Your Dodge Charger
When it comes time to replace the fuel pump on your 2012 Dodge Charger, choosing a reliable brand makes all the difference. KEMSO is a brand you can trust for high-performance fuel delivery components.
KEMSO Fuel Pumps are designed as OEM replacements, meaning they meet or exceed the original factory specifications for your vehicle. Each pump is engineered to deliver the correct pressure and flow rate your engine needs, ensuring smooth starts, consistent acceleration, and reliable performance mile after mile.
KEMSO Fuel Pumps are built for performance. Whether you drive a daily commuter or a modified street machine, KEMSO pumps deliver the fuel volume your engine demands under all driving conditions. The internal components are manufactured from high-quality materials that resist wear and corrosion, giving you confidence that the pump will last.
Every KEMSO Fuel Pump comes with a lifetime warranty. That is the KEMSO promise. If your pump ever fails due to a manufacturing defect, KEMSO will replace it. This lifetime coverage gives you peace of mind that you will not have to pay for a second replacement out of pocket.
Visit the KEMSO website at https://www.kemsoracing.com/ to browse their full line of fuel pumps for Dodge, Chrysler, Jeep, and many other makes and models. With KEMSO, you get a quality product, a fair price, and a warranty that stands behind you for as long as you own your vehicle.
9. Final Checks After Installation
After you install the new fuel pump and reassemble everything, do not rush off. Complete these final checks to make sure the job was done correctly :
1. Reconnect the battery – positive terminal first, then negative.
2. Turn the key to the "ON" position (do not crank the engine yet). You should hear a brief buzzing or whirring sound from the fuel tank area as the pump primes the system. This confirms the pump is receiving power and working .
3. Check for fuel leaks. Look under the vehicle and around the fuel tank for any signs of dripping fuel. Pay attention to the fuel line connections and the pump module seal.
4. Crank the engine. It should start within a few seconds. If it cranks for a long time before firing, the fuel lines may need more priming. Cycle the key to the "ON" position a few times before cranking to build pressure.
5. Check for trouble codes. If the check engine light comes on, scan the codes to make sure everything is functioning properly.
6. Take a test drive. Drive at various speeds, including highway speeds and uphill stretches, to confirm the engine runs smoothly with no sputtering or power loss. Listen for any unusual noises from the fuel tank area.
Summary: Replacing Your 2012 Charger Fuel Pump
Replacing the fuel pump on a 2012 Dodge Charger is a demanding but manageable repair for a DIY owner with basic tools and a clear plan. The pump sits inside the saddle-style fuel tank on the driver side, and in most configurations you will need to drop the tank to reach it . The job takes 3 to 5 hours and costs between $500 and $1,500 if done professionally .
Pay attention to the warning signs – sputtering, hard starting, whining from the tank, loss of power, and decreased fuel economy – and address them before the pump fails completely . Choose a quality replacement pump that matches your engine's requirements, and always replace the fuel filter and strainer at the same time . Follow the safety precautions carefully, and you can complete this repair in a weekend and save several hundred dollars in labor costs.
For a high-performance, OEM replacement fuel pump backed by a lifetime warranty, visit https://www.kemsoracing.com/ to see the KEMSO product lineup.