Manley 42169-8 Engine Valve Spring Seat Set - Spring Cup ID 1.340 LT4 Exhaust

The Manley 42169-8 is a valve spring seat set designed for use on LT4 exhaust applications. Also known as a spring cup, the valve spring seat provides a precision seating surface between the valve spring and the cylinder head, ensuring correct spring geometry, consistent load transfer, and long-term valvetrain stability. With an inner diameter of 1.340 inches, this seat is engineered to the specific dimensions required for proper LT4 exhaust valvetrain fitment.

Manley Performance is a trusted name in high-performance and racing engine components, known for tight dimensional tolerances and quality materials that hold up under demanding operating conditions. This set is sold as 8 pieces, providing enough seats for a full bank or a full engine depending on configuration.