Garrett MGT1446Z Powermax Turbocharger Kit – 2022+ Nissan 400Z 3.0L VR30DDTT | Left & Right Side | Drop-In Upgrade | 959782-5001S

Unlock the full performance potential of your 2022+ Nissan 400Z with the Garrett MGT1446Z Powermax turbocharger kit — a direct drop-in upgrade replacing both the left and right OEM turbochargers on the VR30DDTT 3.0L twin-turbo V6. The Garrett Powermax series is engineered for bolt-on installation with no fabrication, custom piping, or manifold modifications required — delivering significantly increased airflow capacity and power potential over the factory turbos while retaining OEM fitment and reliability. This kit includes both the left-side and right-side MGT1446Z turbochargers for a complete twin-turbo upgrade in a single purchase.

Garrett Powermax – Drop-In Performance Upgrade

The Garrett Powermax series is Garrett’s purpose-built drop-in performance turbocharger line — designed to replace OEM turbos directly, using the factory mounting points, oil and coolant connections, and inlet/outlet interfaces. The MGT1446Z is engineered specifically for the VR30DDTT platform, providing a larger compressor and turbine wheel than the OEM units to support increased airflow and boost pressure for power upgrades beyond what the factory turbos can support.

Key Features

• Direct Drop-In Fitment – No Fabrication Required: The MGT1446Z Powermax is engineered as a direct OEM replacement for the VR30DDTT’s factory turbochargers — using the factory mounting flanges, oil feed and return ports, coolant connections, and inlet/outlet interfaces. No custom manifolds, piping modifications, or fabrication work required. Bolt-on installation by an experienced tuner or performance shop
• Left & Right Side Kit – Complete Twin-Turbo Upgrade: This kit (959782-5001S) includes both the left-side and right-side MGT1446Z turbochargers — a complete replacement of both OEM turbos in a single kit. Replacing both turbos simultaneously ensures matched performance and airflow balance across both banks of the VR30DDTT, critical for consistent power delivery and tuning
• Garrett MGT Series Compressor Wheel: The MGT1446Z uses Garrett’s MGT series compressor wheel — a high-efficiency, aerodynamically optimised compressor design that delivers increased airflow capacity over the OEM compressor wheel. The larger compressor wheel supports higher boost pressure and airflow targets required for significant power upgrades on the 400Z platform
• Garrett Engineering & Quality: Garrett Motion is the world’s leading turbocharger manufacturer — with over 65 years of turbocharger engineering experience across OEM, motorsport, and aftermarket applications. Garrett Powermax turbos are designed, engineered, and validated to Garrett’s OEM-grade quality standards, providing the reliability and durability expected from a Garrett product in a performance upgrade application
• Tuning Required: As with any turbocharger upgrade, an ECU retune is required after installation to take full advantage of the MGT1446Z’s increased airflow capacity and to ensure safe, reliable operation at elevated boost levels. Installation and tuning by an experienced VR30DDTT tuner is strongly recommended

Fitment

• Nissan 400Z (RZ34) — 3.0L VR30DDTT Twin Turbo V6 (2022–present)

Specifications

• Brand: Garrett Motion
• Series: Powermax
• Model: MGT1446Z
• Part Number: 959782-5001S
• Fitment: 2022+ Nissan 400Z 3.0L VR30DDTT
• Kit Contents: Left-Side & Right-Side Turbocharger (both turbos included)
• Installation Type: Direct Drop-In OEM Replacement

⚠️ Installation & Tuning Notes: Professional installation by an experienced performance shop or tuner familiar with the VR30DDTT platform is required. An ECU retune is mandatory after installation — do not run elevated boost on the OEM tune. Verify oil feed and return line condition before installation — replace if worn. Prime the turbochargers with oil before initial startup. Supporting modifications (fuel system, intercooler, intake) may be required depending on target power level — consult your tuner before ordering. This is a performance upgrade product — verify local emissions regulations before installation.