Fleece Performance Coolant Block Off Plate, 2001-2024 LB7/LLY/LBZ/LMM/LML/L5P



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

Fits: 2001 thru 2024 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY/LBZ/LMM/LML/L5P Duramax Diesel

Upgrade your rear engine cover and stop the coolant leaks for good!

Fleece Performance's blocking plate is thicker than the stock plate and has an integral square cut O-ring with no gasket required. OE covers are prone to leakage over time, our billet coolant block off plate with an integral O-ring is an upgrade for your rear engine cover and will the stop the coolant leaks for good.


  • Thicker Than Stock
  • Integral Square Cut O-Ring With No Gasket Required
  • Stops Future Coolant Leaks
  • 1 Year Limited Parts Warranty


  • Coolant Blockoff Plate
  • Necessary Hardware


  • Replaces GM Part# 97941204