Garrett G42-1325 G-Series II Super Core

SKU: 938339-5002S

Garrett G42-1325 G-Series II Super Core High-Performance Turbocharging for Peak Power

The Garrett G42-1325 G-Series II Super Core, engineered to deliver impressive performance for enthusiasts and racers. Designed for 2.0L to 7.0L engines, this super core is capable of producing 475 to 1325 horsepower, making it the go-to choice for high-power applications. With advanced aerodynamics and durable materials, the G42-1325 sets a new standard in turbo technology, offering increased efficiency and flow for demanding builds.

Key Features and Specifications

• Power Range: Supports 475–1325 horsepower, ideal for street, track, or drag racing.
• Compressor Specifications:
• Inducer: 73mm
• Exducer: 91mm
• Trim: 65
• A/R: 0.85
• Up to 10% higher compressor flow compared to G-Series Gen I at peak pressure ratio and turbo RPM.
• Turbine Specifications:
• Inconel turbine wheel for durability at high temperatures (up to 950°C/1742°F).
• Stainless steel turbine housing (housing not included with super core).
• Bearing System: High-efficiency ceramic dual ball bearing cartridge for improved shaft balance and longevity.
• Lubrication: Water- and oil-cooled for consistent performance under extreme conditions.
• Speed Sensor Port: Machined compressor housing port for optional speed sensor kits (sold separately: G781328-0003, G781328-0004, or G923586-0003).
• Oil Restrictor: Includes -4AN oil restrictor fitting with a 1mm orifice to maintain recommended 40–45 psi oil pressure.
• Water Fittings: Four large water jacket ports for customizable cooling line routing.
• Rotation Options: Standard rotation configuration; compatible with G-Series II turbine housings (not included).
• Compressor Housing: Compact design with a 5-inch inlet and 3-inch outlet, featuring a fully machined speed sensor and pressure port for precise monitoring.

What’s Included in Your Purchase

• Garrett G42-1325 G-Series II Super Core (SKU: 938339-5002S)
• -4AN oil restrictor fitting (1mm orifice)
• Water fittings for cooling system integration

Note: Turbine housing and speed sensor kits are not included and must be purchased separately. Compatible turbine housings include V-band or T4 configurations (e.g., 1.01, 1.15, or 1.28 A/R mono-scroll options).

Vehicle Fitment

The G42-1325 G-Series II Super Core is designed for universal fitment across a wide range of vehicles with 2.0L to 7.0L engine displacements. It is compatible with custom builds and aftermarket applications, including but not limited to:

• Toyota: Supra (2JZ-GTE, 1993–2002), 86 (with 2JZ swap)
• Nissan: Skyline GT-R (RB26DETT, 1989–2002), 350Z/370Z (VQ35DE/VQ37VHR)
• BMW: E46 3-Series (with 2JZ or other swaps), M3/M4 (S55/S58, 2014–2020)
• Honda: Civic (K24 swaps), S2000 (F20C/F22C, 1999–2009)
• Ford: Mustang (5.0L Coyote, 2011–2023), Falcon FG F6 (Barra engine, 2008–2016)
• Audi: S3 (2.0T, 1999–2003, with upgrades)
• Ferrari: 308 GTBi (with K24 swap), F355 (with turbo upgrades)
• Mazda: RX-7 (20B 3-Rotor swaps, 1992–2002)

Universal Applications: Suitable for custom builds, drag cars, drift cars, and high-performance street vehicles with proper tuning and supporting modifications.

Fitment Notes: Always consult with a professional tuner or mechanic to ensure compatibility with your specific vehicle setup, as custom fabrication may be required for exhaust manifolds, intercoolers, and piping. Verify engine bay clearance for the compact compressor housing (4mm shorter axially and 29mm smaller radially compared to GTX42).

Why Choose the Garrett G42-1325 G-Series II Super Core?

The G42-1325 stands out with its advanced compressor and turbine aerodynamics, delivering up to 10% more flow and efficiency than its predecessors. The forged, fully machined 73mm compressor wheel ensures rapid boost response, while the Inconel turbine wheel withstands extreme exhaust temperatures. Its compact design fits tightly packed engine bays, making it a versatile choice for a variety of performance vehicles. Whether you’re building a 1000+ horsepower drift car or a high-performance street machine, this super core provides the reliability and power needed to dominate.

Installation and Maintenance

• Oil Requirements: Use a -3AN or -4AN oil feed line and a high-quality oil filter meeting OEM specifications. Maintain 40–45 psi oil pressure to prevent bearing damage.
• Cooling: Water cooling is recommended for optimal performance; included fittings allow flexible routing.
• Warranty: Covered by Garrett’s manufacturer warranty.

Proven Performance

The G42 series has powered championship-winning vehicles, including Andy Gray’s JZX100 Mark 2 (Formula Drift Japan) and Georgi Georgiev’s 1250+ horsepower Audi S3 drag car. Its versatility shines in builds like Ryan Tuerck’s 1000-horsepower Toyota 86 and FuelTech’s restored Ferrari F355, proving its capability across diverse platforms.