ACDelco 12582719 Exhaust Valve for GM LS3 L92 L99 Engines 1.590 Inch Diameter

The ACDelco 12582719 is a genuine GM replacement exhaust valve designed for 2007 and later LS-based engines with rectangle port cylinder heads. This OE-quality valve is engineered to GM specifications for reliable performance and proper fitment in high-performance LS applications.

Key Specifications:

• Valve head diameter: 1.590 inches (40.386mm)
• Valve stem diameter: 8mm (0.315 inches)
• Valve angle: 15 degrees
• Stem type: Solid stem construction
• Material: Stainless steel
• Application: Exhaust position

Compatible Applications:

• LS3, L92, L99, LY6, L76, L77, L96, L94, and L9H engines
• 6.0L and 6.2L LS-based engines (2007-2018)
• Rectangle port cylinder head casting numbers 5364, 821, and 823

This valve is sold individually and features solid stem construction for durability and consistent performance. As a genuine GM part, it meets the rigorous quality standards set by General Motors and provides a direct OE replacement for your LS engine rebuild or valvetrain service.