4F27E/FNR5 Forward Clutch Balance Piston fits Ford

4F27E/FNR5 Forward Clutch Balance Piston – Compatible for Ford & Mazda 2000-Up

Stop the harsh “bang” into Drive, delayed forward movement, and burnt forward clutches with this precision bonded balance piston from Stellar Automotive Group.

This is the critical balance piston (ONE-piston style) inside the forward clutch drum on all 4F27E and FNR5 transmissions. The factory piston commonly cracks or loses its bond under heat and mileage, causing internal leakage that slams the forward pack on apply — leading to rapid friction failure and poor takeoff performance. This direct-replacement molded piston with permanently bonded rubber seal restores perfect clutch timing, smooth forward engagement, and reliable performance for daily driving or light towing.

Perfect fit for popular models including:

• Ford Focus, Escape, Fusion, Transit Connect
• Mazda 3, 5, 6, Tribute

Symptoms of a failing forward balance piston:

• Hard bang when shifting into Drive
• Delayed or no forward movement
• Forward clutch slip or chatter on takeoff
• Burnt forward frictions on teardown

Don’t let a $40 piston destroy your forward clutch pack — install the Stellar Automotive Group bonded balance piston and shift into Drive like factory intended.

Note: All parts are distributed, not designed or manufactured, by Stellar Automotive Group.

Add this must-have 4F27E/FNR5 rebuild part to your cart today and enjoy smooth, reliable takeoffs every time!