Fits: 2001 thru 2016 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY/LBZ/LMM/LML Duramax Diesel with Allison 1000

This billet C2 hub addresses early failures of the Allison transmission C-2 clutch hub in high torque and high horsepower applications.

Features:

• Made from Billet Steel
• 40% larger cross-sectional area of the throat
• 70% greater yield strength
• 35% greater tensile strength
• Includes modified P1 thrust washer
• Made in USA

Includes:

• 1x Billet C2 hub

Note:

• P1 sun gear requires machining in order to fit, instructions included