45RFE/68RFE Underdrive Balance Piston

45RFE/68RFE Underdrive Balance Piston – Compatible for Dodge, Jeep & Chrysler 1999-Up

Stop harsh 1st gear engagement, flare, and burnt underdrive clutches with this precision bonded balance piston from Stellar Automotive Group.

This is the critical balance piston inside the underdrive clutch drum on all 45RFE, 545RFE, and 68RFE transmissions. The factory piston commonly cracks or loses its bond under heat and mileage, causing internal leakage that slams the underdrive pack on apply — leading to rapid friction failure and that classic “bang” when shifting into Drive. This direct-replacement molded piston with permanently bonded rubber seal restores perfect clutch timing, smooth takeoff, and reliable performance even under heavy towing.

Perfect fit for popular models including:

• Dodge Ram 1500, 2500, 3500, Dakota, Durango
• Jeep Liberty, Grand Cherokee, Commander
• Chrysler Aspen

Symptoms of a failing underdrive balance piston:

• Hard bang or delayed engagement into Drive
• Underdrive clutch slip or flare on takeoff
• Burnt underdrive frictions on teardown
• Harsh 1-2 upshift

Don’t let a $50 piston destroy a $500 clutch pack — install the bonded underdrive balance piston and shift smooth from the start.

Add this must-have 45RFE/68RFE rebuild part to your cart today and drive with confidence!