LS Engine Oil Cooler Block-Off Cover Plate

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  • Used to delete the factory cooler circuit on most LS-series oil pans or to replace the factory block-off plate.
  • Large ported internal cavity for better flow than the factory diecast block-off plate.
  • Includes gasket and mounting screws.

Lifetime Warranty

Part # EGM-108

Improved Racing's oil cooler block-off / bypass cover plate installs over the oil cooler ports found on most LS-series oil pans. This kit can be used to delete the oil cooler circuit.

The bypass cover is CNC-machined from billet 6061-T6 aluminum and Type II anodized in black. It features a large ported internal cavity with smooth features to improve flow characteristics when compared to the factory diecast bypass cover.

Features & Benefits

  • Bypass cover is CNC-machined from 6061-T6 billet aluminum, Type II anodized in black, and laser marked.
  • Improved flow characteristics over the factory diecast bypass cover. 


  • Bypass cover
  • Rubber and aluminum bonded gasket
  • Mounting screws


  • All GM LS-series engine oil pans with oil cooler line adapter plate above the oil filter.
Part #
Primary Material
6061-T6 aluminum
Improved Racing
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