Yella Terra Holden L67 Stealth V2 Intercooler Upgrade Kit — YT 3800ST-UPGRD

This Yella Terra upgrade package is for vehicles already fitted with the YT 3800ST Stealth intercooler. It converts the existing cooler arrangement toward the larger V2 Tower of Terror configuration without replacing the complete water-to-air system.

Upgrade purpose

• Increases the assembled intercooler stack to 47.5 mm.
• Provides approximately double the cooling capacity of the original YT 3800ST core arrangement.
• Particularly suited to smaller supercharger pulleys and higher-boost combinations.
• Retains the original fuel rails and engine cover for an OEM-style appearance.
• Billet-alloy CNC-machined components provide a stable sealing surface and resist warping or cracking under heat and oil exposure.

Kit contents

• V2 Tower of Terror centre CNC-machined core.
• One additional cooler; the existing YT 3800ST cooler and cases are reused.
• Six fuel-injector adapters.
• Grey ThreeBond assembly sealer.
• OEM-specification base gasket.
• Lengthened M8 assembly hardware.

Important: An existing YT 3800ST Stealth system is required. This is an upgrade package, not a complete standalone intercooler kit.

Supplier

Yella Terra

Product System

• Intercooler
• Turbo & Forced Induction

Vehicle Fitment

• Holden Commodore Vs L67
• Holden Commodore Vt Vt Ii L67
• Holden Commodore Vx L67
• Holden Commodore Vy L67

Confirm chassis, engine, drivetrain and production-year compatibility before ordering.

Supplier Part Number

YT 3800ST-UPGRD

Built by Boost & Tune Support

BBT can assist with fitment review, installation, supporting modifications, configuration and calibration requirements where applicable.