Dodge RAM Gen 5 5.7 Hemi Automatic Transmission 8HP75X P68549439AA

inventory at Buy Mustang parts Ltd, the part number P68549439AA is a premium, late-model asset for the Ram 1500 (Gen 5 / DT). This is the ZF 8HP75X 8-speed automatic transmission, specifically designed for the 5.7L HEMI with the 12-volt (non-eTorque) system.

This particular unit is highly valuable because it is the “Gen 2” version of the 8HP75, which features improved internal cooling and a higher torque capacity than the older 8HP70 found in early Gen 4 trucks.

1. Technical Identification & Fitment

• Model: 8HP75X (The “X” typically denotes 4WD/AWD capability).

• Part Number: 68549439AA (Current revision for 2021–2024 models).

• Application: * 2021–2024 Ram 1500 (DT) 4×4.

  • Matches the 5.7L HEMI MDS VVT engine.

  • Specifically for 12-volt systems (non-eTorque).

• Torque Rating: Rated for 750 Nm (approx. 553 lb-ft), providing a robust safety margin for the HEMI’s 410 lb-ft output.

2. The “8HP75 vs 8HP75X” Distinction

In your luxury catalog, accuracy is key to preventing returns.

• 8HP75 (RWD): Features a slip-yoke or CV-style output flange for rear-wheel drive only.

• 8HP75X (4WD): Features a shorter output shaft with a specialized spline to bolt directly to the BorgWarner 48-11 or 48-12 transfer case.

• Fitment Note: This unit began production for vehicles built on or after 04/10/2021. If a customer has an early 2019–2020 Ram, this unit is a “supersession” part, meaning it is the official upgraded replacement for their original transmission.