Automatic Transmission Mount Guide for the 1981-1983 Dodge Challenger
If you're hearing clunks and feeling vibrations, the transmission mount on your second-generation Challenger is the likely cause.
- The 1981-1983 Challenger is a Mitsubishi import, which shares parts with the Plymouth Sapporo.
- A new aftermarket mount (Anchor 2730 or equivalent) is readily available and the recommended choice.
- Key failure symptoms are clunking noises when shifting and excessive vibration in the cabin.
- Driving with a bad mount is not recommended as it can cause damage to other drivetrain components.
Understanding Your Second-Generation Challenger
Before buying parts, it's important to know that the 1981-1983 Dodge Challenger is a very different car from the classic 1970s muscle car or the modern version. This second generation was a "captive import," built by Mitsubishi in Japan and sold under the Dodge nameplate. It shares its chassis and many parts with the Plymouth Sapporo and Mitsubishi Sapporo/Starion. This is actually good news, as it makes finding certain parts, like the transmission mount, easier than you might think.
Symptoms of a Failing Transmission Mount
A bad transmission mount makes itself known through distinct sounds and feelings. Because the rubber insulator degrades over time, it can no longer hold the transmission steady or absorb vibrations. Look out for these common signs:
- Clunking or Banging Noises: This is the most frequent symptom. You may hear a loud clunk or thud when you shift from Park into Drive or Reverse. The noise can also happen when you accelerate quickly or brake hard. This sound is the transmission itself moving excessively and hitting other components.
- Excessive Vibration: If the rubber in the mount is worn out, vibrations from the transmission will travel through the car's frame and into the cabin. You might feel this vibration through the floor or the driver's seat, and it often gets worse when accelerating.
- Engine and Transmission Movement: A healthy mount keeps the drivetrain stable. If your mount is bad, you might see the engine and transmission lurch or shift when you put the car in gear or rev the engine. A mechanic can confirm this with a power brake test.
Don't Ignore the Signs
Continuing to drive with a failed transmission mount is not recommended. The excessive movement puts extra stress on other critical parts like engine mounts, the driveshaft, U-joints, and even the exhaust system, which can lead to more expensive repairs down the road.
Choosing the Right Aftermarket Part
Finding a new original equipment (OEM) Mopar part from the 1980s is nearly impossible. While you might find a used mount at a junkyard, its 40-year-old rubber will likely be brittle and unreliable. Fortunately, the aftermarket offers a reliable and affordable solution.
For the 1981-1983 Dodge Challenger with an automatic transmission, the choice is straightforward. The most commonly available part is the Anchor 2730 mount or its direct cross-references from other brands like Westar (EM-2730) or DEA (A2730). These parts are specifically listed as fitting the 1978-1983 Dodge Challenger and its Mitsubishi siblings. They are designed to meet or exceed original factory standards, using modern rubber compounds for a long service life.
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket (Anchor 2730 or equivalent) | $25 - $40 |
| New OEM (NOS) | Not Generally Available |
| Used OEM | $10 - $30 (Not Recommended) |
| Shop Labor | $100 - $200 |
Frequently Asked Questions (FAQ)
Is this the same mount for a manual transmission?
Yes, the Anchor 2730 part is listed for both manual and automatic transmission models of the 1978-1983 Dodge Challenger, Plymouth Sapporo, and other related vehicles. It is a rear transmission mount that fits both versions.
Will a bad transmission mount cause a Check Engine Light?
It is very unlikely. The mount itself is a simple rubber and metal part with no sensors. In an extreme case, if the transmission moves enough to damage a nearby sensor or wiring harness, it could trigger a light, but this is not a direct symptom.
Are there any recalls for the transmission mount on this car?
No, there are no recalls or Technical Service Bulletins (TSBs) from the NHTSA related to the transmission mount for the 1981-1983 Dodge Challenger.
Can I replace the transmission mount myself?
Yes, this is a job that a home mechanic with the right tools can perform. It involves safely supporting the transmission with a jack and a block of wood, unbolting the crossmember, and then unbolting the old mount to swap in the new one. It typically takes 1-2 hours.
Technical Specifications
OEM Part Numbers: MB006705
Aftermarket Part Number: Anchor 2730 (or DEA A2730, Westar EM-2730). This is a rear transmission mount for both automatic and manual transmissions.
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: