Fits: 2006 thru 2016 Chevy Silverado/GMC Sierra 2500HD/3500HD LBZ/LMM/LML Duramax Diesel

OEM injection pump o-ring. This o-ring goes on the adapter bracket that gets bolted onto the block. O-ring keeps a tight seal from any oil seepage. 

Includes:

• 1 O-ring

Notes:

• 2011-2016 LML trucks, O-ring will work with stock CP4 or CP3 conversion.
  
• If your buying an injection pump, this seal may already be included.