The billet steel front drum and extra large billet aluminum piston for Chrysler A618 (47RE and 48RE) transmissions is made for performance Dodge diesel applications from AIAI/SAE 1040-1045 medium-carbon machinery steel. No cast iron in this part!
Features include the following:
- Stronger, more reliable and safer than OEM cast-iron drum and longer-lasting than aluminum drum
- Ideal for street use
- Holds up to 6 friction plates versus 4 in the OEM unit
- 55% MORE piston apply surface area, results in double the clamping force needed in third gear
- Engineered with dual oil apply passages for even piston apply
- Comes with a precision CNC-machined billet aluminum piston