SunCoast Billet P2 Planet without Sun Gear, 2001-2005 LB7/LLY

Part# A1-P2K

$925.00 Includes Free Shipping. +$850.00 core charge (refundable)

WARNING: Cancer and Reproductive Harm - www.P65Warnings.Ca.Gov

Fits: 2001 thru 2005 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY Duramax Diesel

The Allison 5-speed transmission stock P2 planetary can strip or snap as a result of poor tuning, shock load, improperly built transmissions, and higher horsepower applications which can cause catastrophic failures. The SunCoast Performance P2 Planetary fix is the solution to this issue. Highly recommended for higher horsepower applications, sled pulling, drag racing, and heavy duty towing.


  • Machined P2 planetary


  • 4140 billet steel
  • Induction heat treated


  • C2 hub is NOT included
  • To accept billet C2 hub, machine work is required on stock P1 sun gear or purchase a modified sun gear
  • For planetary core deposit, planet must be re-buildable to receive core deposit back