Stellar Automotive Group FN4A-EL/FS5A-EL Reverse Clutch Piston fits Mazda

Stellar Automotive Group FN4A-EL/FS5A-EL Reverse Clutch Piston (1.375" Long) – Compatible for Mazda & Ford

Fix delayed or no reverse, slipping in reverse, and burnt reverse clutches with this precision molded reverse clutch piston from Stellar Automotive Group.

This direct-replacement piston (1.375" length) is the critical apply component for the reverse clutch pack in all FN4A-EL and FS5A-EL transmissions. The factory piston commonly cracks or loses its bond under heat and mileage, causing internal leakage that weakens reverse apply — leading to no reverse, harsh clunks, and rapid clutch failure. This upgraded molded piston with permanently bonded rubber seal restores full line pressure, delivers instant, firm reverse engagement, and protects your reverse pack for reliable daily driving.

Perfect fit for popular models including:

• Mazda 3, 5, 6, Tribute, Protege
• Ford Escape, Fusion

Symptoms of a failing reverse piston:

• Delayed or no reverse engagement
• Slipping or weak reverse
• Harsh clunk when reverse grabs
• Burnt reverse frictions on teardown

Don’t let a $50 piston destroy a $500 clutch pack — install the Stellar Automotive Group bonded reverse piston and get reverse back instantly.

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

Add this essential FN4A-EL/FS5A-EL rebuild part to your cart today and drive with full confidence!