Sonnax 35572-53T Heavy Duty "E" Clutch Hub 53-Spline ZF8HP45 845RE

The Sonnax 35572-53T Heavy Duty "E" Clutch Hub is a premium upgrade replacement designed to address a known weak point in ZF8HP45 and Chrysler 845RE automatic transmissions. The OEM hub is cast from A380 aluminum — a material that cannot withstand the high torque demands of these applications — leading to spline shearing, clutch plate hang-up, and total loss of movement in as few as 20,000 miles.

The Sonnax 35572-53T eliminates these failure modes by replacing the fragile OEM casting with a high-strength aerospace-grade aluminum forging. The forging process aligns the grain structure of the metal, delivering dramatically superior yield strength and fatigue resistance compared to the stock hub. The result is a billet-quality component that resists spline wear from steel clutch plates and prevents the notching, plate hang-up, and clutch burning associated with OEM hub failure.

Key Features:

• Aerospace-grade forged aluminum construction — far stronger than OEM cast A380 aluminum
• 53-spline design for ZF8HP45 and Chrysler 845RE transmissions
• Eliminates spline shearing and clutch plate hang-up
• Prevents failsafe conditions, ratio codes, and loss of movement caused by hub failure
• Significantly increases overall "E" clutch pack durability
• Direct OEM replacement — restores normal transmission operation

Important Note: Some ZF8HP45 and 845RE applications may have been previously updated to an OE 62-spline hub and planetary assembly due to an earlier failure. Always verify your transmission's spline count before ordering. For 62-spline applications, use Sonnax part number 35572-62T.