Dynosty TSP Delphi LS7 Lifters + Trays | GM LS Gen III/IV & Gen V LT1 28-25341990-16

Overview

Upgrade your LS build with the Dynosty TSP Delphi LS7 lifters and guide trays — a non-DOD replacement kit designed to mirror OEM spec while delivering modern refinements. This set centers on reliable operation, precise oiling paths, and a clean installation experience, making it a solid choice for enthusiasts who rebuild or refresh their LS engines without active fuel management.

Engineered as a direct upgrade from the GM OEM 12499225 reference, these lifters are the Delphi/LS7 style you know from a factory fresh setup. The kit includes 16 lifters and 4 guide trays, packaged to support a balanced, predictable lifter seating process and help preserve consistent performance over time.

What’s Included

• 16 Delphi LS7-style lifters (non-DOD) for an authentic replacement experience
• 4 guide trays to aid proper alignment and seating during installation

Engine Compatibility

• Fits: LS1, LS2, LS3, LS6, LS7, LM7, LQ4, LQ9, L83, L86, LT1
• Fits: 4.8L, 5.3L, 5.7L, 6.0L, 6.2L Gen 3/4 LS engines and Gen 5 LT engines
• Non-DOD Only — intended for engines without active fuel management

Why Dynosty

• Direct OEM-style replacement designed for longevity and dependable lifter wear
• Delphi-based design aims for smooth lifter action and consistent oiling paths
• Includes trays to support accurate lifter alignment during assembly

Note: This kit is intended for non-DOD engines and may require additional steps if AFM/DOD removal is part of your build. Always verify compatibility with your specific build plan before installation.