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Billet Rear Main Cover for GM LSX Iron and CBM PRO-X Aluminum Engine Blocks

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$249.99

$ 99 .00 $99.00

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About this item

  • These meticulously crafted Billet Aluminum Rear Main Covers specifically designed for GM LSX style iron and CBM aluminum Pro-X engine blocks are engineered to deliver a superior fit and seal, effectively eliminating the headaches and messes associated with their cast counterparts.
  • Here's why. Traditional cast rear main covers are notorious for less-than-perfect fitment. This can lead to uneven pressure on the rear main seal, resulting in persistent oil leaks. The porosity inherent in cast materials can also contribute to weeping and seepage over time. The result? A frustrating and messy engine bay or worse, a blown engine.
  • These billet aluminum rear main covers offer a significant upgrade in both precision and durability. They are CNC machined from a solid block of 6061-T6 aircraft-grade billet aluminum, ensuring unparalleled accuracy and resistance to warping or cracking.
  • Machined finish.
  • Includes o-ring and mounting hardware.
  • Proudly made in the USA.


These meticulously crafted Billet Aluminum Rear Main Covers specifically designed for GM LSX style iron and CBM aluminum Pro-X engine blocks are engineered to deliver a superior fit and seal, effectively eliminating the headaches and messes associated with their cast counterparts. Here's why, The Problem with Cast: Fitment and Leaks. Traditional cast rear main covers are notorious for less-than-perfect fitment. This can lead to uneven pressure on the rear main seal, resulting in persistent oil leaks. The porosity inherent in cast materials can also contribute to weeping and seepage over time. The result? A frustrating and messy engine bay or worse a blown engine. . The Billet Solution: Precision and Strength. These billet aluminum rear main covers offer a significant upgrade in both precision and durability. They are CNC machined from a solid block of 6061-T6 aircraft-grade billet aluminum, ensuring unparalleled accuracy and resistance to warping or cracking. Machined finish. Includes o-ring and mounting hardware. Proudly made in the USA.