Automatic transmission Dodge Charger Challenger 6.4L V8 SRT 492PS 86TK

inventory at Buy Mustang parts Ltd, an automatic transmission for the Dodge Charger or Challenger 6.4L SRT (392 Scat Pack) is a high-turnover item, especially given the popularity of the “392” HEMI platform.

1. Technical Identification

The gearbox for the 492 PS (485 HP) 6.4L V8 is the ZF-sourced 8HP70 (TorqueFlite 8). It is significantly beefier than the 8HP45/50 used in V6 models to handle the 644 Nm (475 lb-ft) of torque.

• Model: ZF 8HP70 (RPO Code: DFK)

• Gearing: 8-Speed Automatic with Paddle Shift compatibility.

• Compatibility: 2015–2023 Charger and Challenger SRT / Scat Pack.

• 86,000 km (86TK) Status: In the luxury parts market, 86k km is considered “mid-mileage.” For a performance transmission, this is the point where a fluid/filter service is mandatory before resale to ensure longevity.

2. Condition & Inspection Checklist

To list this as “Premium” or “Luxury Grade,” verify these common HEMI driveline points:

1. Output Shaft Seal: Check for leaks where it connects to the driveshaft. High-torque launches often stress these seals.

2. Fluid Color: If the fluid is dark or smells burnt, the internal clutch packs may have been abused (heavy drag racing use).

3. TCM Programming: Remind your buyers that since the Transmission Control Module (TCM) is internal, they may need a dealership “Flash” or a tool like the ZAutomotive Tazer to marry the transmission to their vehicle’s VIN.

4. Oil Pan/Filter: The 8HP70 uses a plastic integrated oil pan/filter. Check for cracks or heat warping.