TSP GM Delphi LS7 Lifters and Trays - Full Set of 16 (28-25341990-16)
The Performance Industry Standard for LS and LT Valvetrain Reliability.
The TSP GM Delphi LS7 Lifters and Trays Kit (P/N 28-25341990-16) is the ultimate solution for LS and LT engine builds requiring maximum reliability. Whether you are performing a camshaft swap or a complete AFM/DOD removal, these authentic Delphi lifters provide the exact oiling and pressure characteristics needed for high-performance applications. This kit includes a full set of 16 precision-engineered lifters and 4 guide trays.
- Brand: Texas Speed & Performance (TSP) / Delphi
- Lifter Type: Hydraulic Roller (LS7 Style)
- Quantity: 16 Lifters + 4 Guide Trays
- Fitment: Gen III / IV LS and Gen V LT Engines
- Condition: Brand New / Genuine TSP Delphi components
- Part Number: 28-25341990
⚠️ CRITICAL INSTALLATION & FITMENT DATA
AFM/DOD Note: These lifters are for Non-DOD applications only. If your engine was originally equipped with Active Fuel Management (AFM) or Displacement on Demand (DOD), you must install an AFM removal kit and proper camshaft to work with these lifters.
Technical Fitment Guide:
- Engine Platforms: Fits 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L.
- Compatible Codes: LS1, LS2, LS3, LS6, LS7, LM7, LQ4, LQ9, L83, L86, LT1.
- Service Advice: Always replace your guide trays when installing new lifters. Standard LS/LT lifter trays are wear items; reuse can lead to lifter rotation and catastrophic engine failure.
Lifter Pre-Soaking: We recommend soaking lifters in fresh engine oil for 15-30 minutes prior to installation to ensure initial lubrication upon first startup.
Why Choose Delphi LS7 Lifters?
As the manufacturer of the original equipment for the Corvette Z06, Delphi's LS7 lifter is designed to handle higher RPMs and increased spring pressures compared to standard truck lifters. They are a "drop-in" upgrade that provides peace of mind for both daily drivers and track-day vehicles.
