Dodge Challenger Engine Mount Replacement and Diagnosis (2005-2012)
Stop the shaking and clunking noises by choosing the right replacement engine mount for your Challenger.
- The most common symptom of failure is a heavy vibration at idle when the car is in gear.
- Always inspect mounts for fluid leaks; an oily residue indicates the hydraulic mount has failed.
- For best results and to prevent future issues, always replace engine mounts in pairs.
- Be aware that cheap, solid rubber aftermarket mounts will likely increase cabin vibration compared to the original hydraulic design.
Is Your Challenger Shaking at Stop Lights?
The most common sign of a failing engine mount on a 2005-2012 Dodge Challenger is a strong vibration felt in the steering wheel, seats, and floor. This vibration is usually worst when the car is stopped at a light with the transmission in Drive or Reverse. You may also hear a loud 'clunk' or 'thud' from the engine bay when you accelerate hard, shift gears, or let off the gas pedal suddenly.
Common Failure Points and Known Issues
The original engine mounts on this generation of Challenger are hydraulic, meaning they are filled with fluid. Over time, the rubber housing can crack from age, heat, and stress, causing this fluid to leak out. Once the fluid is gone, the mount can no longer dampen vibrations effectively. You can often spot a failed mount by looking for dark, oily residue on the mount's surface or on the subframe below it. 🎬 Watch: How to diagnose bad motor mounts in your vehicle While the user manual may list your vehicle as a 2008-2012 model, these parts are often shared with the larger Chrysler LX platform, which includes the Dodge Charger and Magnum dating back to 2005, explaining the wider year range compatibility.
🎬 See this 5.7 Hemi engine mount replacement walkthroughNo Recalls or TSBs for Mounts
As of early 2026, there are no specific safety recalls or Technical Service Bulletins (TSBs) from Dodge for engine mount failure on the 2008-2012 Challenger. Any failures are typically addressed as wear-and-tear repairs.
Choosing the Right Aftermarket Engine Mount
When replacing your mounts, you'll find two main types: OEM-style hydraulic mounts and solid rubber mounts. OEM Mopar mounts are tuned for a smooth ride, but can be expensive. Many aftermarket brands offer solid rubber alternatives that are cheaper but often increase cabin vibration.
Aftermarket Brand Tiers
- Economy (Anchor, DEA, Westar): These brands provide the lowest-cost options. However, forum discussions and reviews show mixed results. They are typically solid rubber, not hydraulic, and may cause a noticeable increase in vibration at idle. Some users report premature failure or fitment issues. These are best suited for a temporary fix or if budget is the absolute primary concern.
- Standard Replacement (Crown Automotive): Generally considered a step up from economy brands, Crown aims to provide an OEM-style replacement. While quality can be inconsistent, they are often a better choice than the cheapest options for owners of daily-driven vehicles who want to avoid harsh vibrations.
Pro Tip: Your Challenger has two engine mounts and one transmission mount. These parts work together to stabilize the entire drivetrain. It is highly recommended to replace the engine mounts in pairs to ensure even support and prevent premature failure of the new part. Inspecting the transmission mount at the same time is also a good idea.
Cost to Replace Dodge Challenger Engine Mounts
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Engine Mount (Each) | $44 - $118 |
| New OEM Mopar Engine Mount (Each) | $100 - $200 |
| Shop Labor (Pair) | $250 - $600 |
| Total Professional Replacement (Aftermarket Parts) | $340 - $840 |
Cost estimates are for a pair of engine mounts and are subject to change based on location, vehicle engine (V6/V8), and part availability.
Frequently Asked Questions
How many engine mounts does a 2005-2012 Challenger have?
The vehicle has two engine mounts (left and right) and one transmission mount that supports the rear of the transmission.
Should I replace just the one broken mount?
It is strongly recommended to replace both engine mounts at the same time. When one fails, the other has been subjected to extra stress and is likely near the end of its life. Replacing them in pairs ensures proper drivetrain alignment and longevity.
Are V6 and V8 engine mounts different?
Yes, the mounts are often different depending on the engine. The V8 HEMI engines are heavier and produce more torque, requiring specific mounts. Always verify the part fitment for your specific engine (3.5L, 5.7L, 6.1L, etc.) 🎬 Watch: Step-by-step V6 motor mount replacement guide before ordering.
What's the difference between an engine mount and an engine bracket?
The engine mount, also called an isolator, is the rubber and/or hydraulic part that fails. The engine bracket is the solid metal piece that connects the mount to the engine block. Brackets rarely fail and are typically reused.
Helpful Videos
Technical Specifications
OEM Part Numbers: 4578046AC 4578046AD 4578046AE 4578046AF 4578193AE 4578194AC 4578194AD 4578194AE
The original equipment mounts for the 2005-2012 Dodge Challenger are a hydraulic (fluid-filled) design. They connect the engine to the vehicle's front subframe. Part numbers vary based on the specific engine (V6 vs. V8) and sometimes the model year.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Dodge Challenger:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Challenger Shaking at Stop Lights?
- Common Failure Points and Known Issues
- No Recalls or TSBs for Mounts
- Choosing the Right Aftermarket Engine Mount
- Aftermarket Brand Tiers
- Cost to Replace Dodge Challenger Engine Mounts
- Frequently Asked Questions
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