E4OD/4R100 Coast Clutch Piston fits Ford (89-04)

Stellar Automotive Group E4OD/4R100 Coast Clutch Piston – Compatible for Ford Super Duty 1989-2004

Stop engine runaway on deceleration and burnt coast clutches with this precision molded coast clutch piston from Stellar Automotive Group.

The factory coast piston commonly cracks or loses its lip seal under heavy towing and torque, causing loss of apply pressure — resulting in no engine braking, high RPM overrun when letting off the gas, and rapid clutch failure. This direct-replacement molded piston features a permanently bonded rubber sealing lip that stays flexible and leak-free, restoring full coast-down function and smooth engine braking even under max loads.

Perfect fit for popular models including:

• Ford F-250, F-350, F-450, F-550 Super Duty
• Ford Excursion & E-Series vans
• 7.3L Power Stroke, 5.4L, 6.8L V10 applications (1989-2004)

Symptoms of a failing coast clutch piston:

• Engine revs freely when coasting in gear
• No engine braking (especially noticeable downhill)
• Ratcheting noise or slipping on overrun
• Burnt coast frictions on teardown

Don’t let a $50 piston destroy your coast pack — install the Stellar Automotive Group bonded coast piston and feel the engine braking return instantly.

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

Add this essential E4OD/4R100 rebuild part to your cart today and tow with full control!