Dodge Magnum (2004-2008) Automatic Transmission Mount Replacement Guide
Getting clunks or vibrations in your Magnum? Your transmission mount might be the culprit.
- The most common symptom of failure is a loud 'clunk' when shifting into Drive or Reverse.
- This part is for RWD models only; AWD Magnums require a different mount.
- Replacement is a DIY-friendly job that takes about 1.5 hours.
- Ignoring a bad mount can cause damage to engine mounts, the driveshaft, and exhaust components.
Is Your Dodge Magnum's Transmission Mount Failing?
The transmission mount on the 2004-2008 Dodge Magnum is a durable part, but after years of heat, torque, and road stress, the rubber can crack, separate, or collapse. When it fails, the symptoms are usually obvious and shouldn't be ignored. Since this part is shared with other Chrysler LX platform cars like the Charger and 300, the failure signs are well-documented.
Key Symptoms of a Bad Mount
- Clunking or Banging Noises: This is the most common sign. You'll hear a loud 'clunk' when shifting from Park into Drive or Reverse. The noise can also happen when you accelerate hard or brake suddenly as the loose transmission shifts and hits the frame.
- Excessive Vibrations: A worn-out mount can no longer absorb drivetrain vibrations. You might feel a new or worsening vibration through the floor, seats, or steering wheel, especially when idling in gear or accelerating.
- Visible Drivetrain Movement: With the help of a friend, you can often diagnose a bad mount visually. With the parking brake on and their foot firmly on the brake pedal, have them shift between Drive and Reverse. If you look at the transmission from under the car, you may see the entire assembly lurch or lift excessively, which is a clear sign of a failed mount.
Known Issues & Recalls
There are no specific recalls or Technical Service Bulletins (TSBs) from Dodge or the NHTSA for the automatic transmission mount on the 2004-2008 Magnum. Failures are typically due to age and wear. While other transmission-related TSBs exist for shift quality or other components, they are not related to this physical mount.
Choosing the Right Aftermarket Transmission Mount
When shopping for a new mount, you'll find several aftermarket brands available. The original Mopar part is known to be very durable, but a quality aftermarket replacement can offer good performance for less money. It's important to note that this guide covers the mount for Rear-Wheel Drive (RWD) models only; All-Wheel Drive (AWD) Magnums use a different part.
| Tier | Brands | General Assessment |
|---|---|---|
| Good | Crown Automotive, Pioneer Cable | Crown is well-regarded for Chrysler/Dodge/Jeep replacement parts that meet or exceed OEM standards. Pioneer is also noted by users for having a fit and finish very close to the original factory parts. These are solid choices for a reliable, long-lasting repair. |
| Standard / Economy | Anchor, Westar, DEA Strut | These brands provide a budget-friendly solution. However, owner experiences are mixed. Some report they work fine, while others have experienced premature failures or fitment issues. They can be a viable option if cost is the primary concern, but may not have the same longevity as higher-tier brands or OEM. |
Pro Tip: When replacing the transmission mount, it's a good time to inspect your two engine mounts. A failed transmission mount puts extra stress on the engine mounts, and they often wear out around the same time.
Frequently Asked Questions (FAQ)
Can I drive my Magnum with a bad transmission mount?
It is not recommended for long distances. While the vehicle is drivable, the excessive movement puts significant stress on engine mounts, driveshaft components (like U-joints), and exhaust pipes, which can lead to more expensive repairs down the line.
Will a bad transmission mount cause a Check Engine Light?
It is very unlikely. The mount itself has no sensor. In an extreme case, if the transmission moves enough to damage nearby wiring or sensors, it could trigger a fault code, but this is not a direct symptom.
Is the transmission mount the same for all Magnum models?
No. The standard rear mount fits all RWD models from 2004-2008 (2.7L, 3.5L, 5.7L, 6.1L). AWD models have a different transfer case and require a different transmission mount. Be sure to order the correct part for your drivetrain.
How difficult is it to replace the transmission mount?
For a home mechanic, this is a fairly straightforward job. It involves safely supporting the transmission with a jack, removing a few bolts, and swapping the part. The difficulty is generally rated at 2 out of 5, and it can typically be done in about an hour to an hour and a half.
Technical Specifications
OEM Part Numbers: 4578061AG 52017534K
This is a single, solid rubber and steel mount that secures the rear of the automatic transmission to the crossmember. It fits all 2004-2008 Dodge Magnum models with Rear-Wheel Drive (RWD). It is not compatible with All-Wheel Drive (AWD) models.
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 Magnum: