This valley cover gasket is designed for GM Gen III LS engines and replaces the factory valley cover gasket (GM part 12558178). It provides a reliable seal between the engine block and valley cover, preventing oil seepage into the engine valley and helping maintain internal engine cleanliness and oil control. The gasket is suitable for rebuilds, maintenance, or repairs where the valley cover is removed or replaced.

Brian Tooley Racing BTR58178 Features:

• Fitment: GM Gen III LS engines (LS1, LS2, LS3, etc.)
• Replaces OEM valley cover gasket GM 12558178
• Seals the lifter valley cover to the block to prevent oil leaks
• Steel/rubber gasket construction for durability and reliable sealing
• Direct-fit design for easy installation

Brian Tooley Racing BTR58178 Notes:

• Sold individually; one gasket required per valley cover installation
• Recommended replacement whenever the valley cover is removed (e.g. during rebuilds, cam/lifter work, or maintenance)