Duramax Allison 1000 C-2 Clutch Hub

This billet steel C-2 clutch hub for GM Duramax Allison 1000 transmission addresses early failure of the C-2 clutch hub in high torque/horsepower applications.

• Made from 4140 HTSR billet steel
• Lengthened spline (additional 1/8″) for more contact, plus a spline boss diameter increase of .100″ for added strength
• Adds only 2.8 oz over OEM part, for no weight penalty for strength
• Includes modified thrust washer

This hub requires machining modification to P1 Sun Gear Required (see downloads below).