Labwork FOR Chevy GM 5.3L AFM Replacement Kit Gaskets Lifters Trays Head Bolts

Key Features

• Restore Engine Performance: This comprehensive kit replaces failing Active Fuel Management (AFM) / Displacement on Demand (DOD) components to eliminate lifter ticking noise, restore engine compression, and prevent costly cylinder wear.

• Premium Multi-Layer Steel (MLS) Head Gaskets: Engineered to provide a high-pressure seal between the cylinder head and engine block, keeping internal combustion localized while preventing oil and coolant from mixing.

• Heavy-Duty Hydraulic Lifters: Replaces sludge-laden and worn factory lifters with precision-machined hydraulic roller lifters to ensure proper valvetrain clearance, quieter operation, and extended reliability.

• Complete Overhaul Solution: Includes all essential gaskets, lifters, guides, and torque-to-yield head bolts needed to perform a complete upper engine rebuild in one package.

Fitment Guide

Specifically designed for GM 5.3L V8 (16-Valve OHV / 325 CID) engines with AFM/DOD systems:

Package Includes (Complete Kit List)

• Gasket Set:

  • 2 x Multi-Layers Steel (MLS) Cylinder Head Gaskets

  • Valve Cover Gaskets & Valve Stem Seals

  • Intake Manifold Gaskets (Aluminum Frame) & Exhaust Manifold Gaskets

  • Front Camshaft Seal, Performance O-Rings, & Miscellaneous Small Seals

  • 1 x Tube of RTV Silicone Sealant

• Lifters & Guides Set:

  • 8 x AFM (Active Fuel Management) Hydraulic Roller Lifters

  • 8 x Non-AFM Hydraulic Roller Lifters

  • 4 x Upgraded Lifter Trays (with securing bolts)

• Hardware & Components:

  • 30 x Cylinder Head Bolts (20 Long Bolts: 100mm / 10 Small Bolts: 45mm)

  • 1 x Valve Lifter Oil Manifold (VLOM Assembly)

  • 1 x Oil Pressure Sensor Screen Filter
    

   

Important Buyer Notes

• Torque-to-Yield Warning: The cylinder head bolts included in this kit are Torque-to-Yield (TTY) fasteners designed for one-time use only. Do not reuse old head bolts during assembly.

• Fitment Check: GM 5.3L engines feature several variant codes. Please strictly cross-reference your vehicle's VIN or engine code to ensure compatibility with an AFM/DOD setup before ordering.

• Professional Installation Required: Rebuilding a V8 engine top-end requires highly specific mechanical skills, torque sequence accuracy, and clean workspace practices. Professional installation by a certified master technician is strongly recommended.

Customer Support & Warranty

Buy with Confidence: We stand behind the quality of our products. We provide excellent after-sales service for any items damaged during delivery or those with a confirmed manufacturer defect.

Need Help?: If you are unsure about fitment or have any questions regarding your order, please feel free to contact us. We are dedicated to providing you with a 100% satisfactory solution!