2023-2025 Dodge Hornet & Alfa Romeo Tonale 2.0L PTU Bracket: Diagnosing Drivetrain Clunks and Vibrations

Variant & Compatibility Warning

Symptoms of a Failing PTU Bracket

Because the Dodge Hornet is a relatively new vehicle, widespread failures of this specific bracket are not yet common. However, like any drivetrain mount, it can fail from stress, impact damage, or corrosion over time. The symptoms are caused by the PTU moving excessively when it should be held rigid.

• Clunking or Thumping Noises: The most common symptom is a distinct "clunk" or "thump" from the center of the vehicle, especially when shifting from Park to Drive/Reverse or during abrupt acceleration and deceleration. This is the sound of the PTU shifting and hitting the chassis.
• Drivetrain Vibration: A noticeable vibration that can be felt through the floor or seats, particularly at certain speeds or under load. This happens because the loose PTU is no longer properly aligned with the rest of the drivetrain.
• Impact Sensation on Bumps: Hitting a bump may cause a secondary jolt or knock as the unsecured PTU moves up and down.

Known Issues, Recalls, and TSBs for the 2023-2025 Dodge Hornet

As of mid-2026, there are no specific recalls or Technical Service Bulletins (TSBs) for the PTU bracket itself. However, owners of the 2.0L Hornet should be aware of several other issues affecting the platform.

Recalls (NHTSA)

• Brake Pedal Failure (Recall 24V752000): A recall was issued for some 2024-2025 models because the brake pedal arm could collapse, leading to a loss of braking function. Dealers will reinforce the pedal arm free of charge.
• Rearview Camera Failure (Recall 25V246000): On certain 2023-2025 models, the rearview camera image may fail to display. The fix involves a software update or replacement of the display module.
• Incorrect Tire Placard: Some 2023-2024 models were recalled for having an incorrect maximum vehicle capacity weight listed on the tire information label.

Technical Service Bulletins (TSBs)

• Engine Misfire (TSB 18-079-23): This bulletin addresses engine misfire codes (P0300-P0304) on some 2023 models, caused by cracked spark plugs from factory installation. The repair involves replacing all four spark plugs.
• False Communication Code (TSB S2308000035): Technicians may find an erroneous code U1202-00 (Lost Communication with Electric Vehicle Control Module). This is a software glitch in the radio on 2.0L models (which have no EVCM) and should be ignored until a software update is released.

Buying a Used Trans Case Adapter (PTU Bracket)

Since this is a simple, solid piece of metal, a used OEM bracket is an excellent way to save money. Aftermarket versions are not commonly available, making a recycled part the best budget-friendly option. When inspecting a used part, look for the following:

• Check for Cracks: Carefully inspect the entire bracket, especially around the bolt holes and bends, for any hairline cracks. A cracked bracket is useless and must be discarded.
• Look for Deformation: Ensure the bracket is not bent or twisted. Compare it to photos of a new part if possible. Any deformation suggests it came from a vehicle involved in a collision and may not align properly.
• Inspect for Corrosion: Surface rust is normal, but avoid parts with deep, flaking rust that could compromise structural integrity. This is especially important for vehicles from northern climates where road salt is used.
• Verify Part Number: Confirm the part is 68446543AA. While it looks simple, small differences in bolt hole locations can make the wrong part impossible to install. Remember that a part from a 2.0L Alfa Romeo Tonale or Jeep Compass will also fit.

Cost of Replacement

Pricing for the PTU bracket can vary, but here is a typical breakdown:

Installation & Difficulty

Replacing the PTU bracket is a relatively straightforward job for a DIY mechanic with the right tools.

• Difficulty: 2 out of 5
• Estimated Time: 0.5 - 1.0 hours
• Tools Needed: Jack, jack stands, socket set, torque wrench.

The general procedure involves safely raising the vehicle, supporting the Power Transfer Unit with a floor jack or pole jack, unbolting the old bracket from the PTU and the vehicle's frame, and then bolting the new bracket in place. Always use a torque wrench to tighten the bolts to manufacturer specifications to ensure it is secure.

Frequently Asked Questions (FAQ)