Garrett 934123-5001S G35-990 Supercore Turbo Core 62mm / 76mm

Vehicle Fitment

• Universal - suitable for custom turbo builds on 2.0 L-5.5 L engines

Features

• Super-core turbo assembly - includes compressor housing and CHRA; turbine housing must be chosen separately
• Compressor inducer 62 mm / exducer 76 mm - supports high airflow and high boost for performance builds
• High-temperature turbine wheel (Mar-M alloy) rated up to 1050 °C for reliability under heavy exhaust heat
• Improved compressor aerodynamics on G-Series II design - increases compressor flow at peak pressure and RPM compared to previous generation
• Water-cooled bearing housing with included oil restrictor and water fittings - supports durability under high-load conditions
• Standard rotation orientation - allows flexible pairing with compatible turbine housings and exhaust systems
• Supports engine builds from ~2.0 L up to ~5.5 L displacement - suitable for many 4-cyl and inline-6 applications
• Capable of delivering approx. 550-990 HP depending on supporting hardware and tuning

Specifications

• Part Number: 934123-5001S
• Model: G35-990 (G-Series II) Supercore
• Compressor Wheel: Inducer 62 mm / Exducer 76 mm
• Compressor Trim: 65 (as per Garrett spec) / Compressor A/R ≈ 0.72
• Supported HP Range: ~550-990 HP
• Supported Engine Displacement: ~2.0 L-5.5 L
• Turbine Wheel Material: Mar-M alloy, heat-resistant up to 1050 °C
• Cooling: Oil and water-cooled bearing housing (water fittings included)
• Rotation: Standard (clockwise) rotation configuration
• Inclusions: Compressor housing, CHRA (core + bearings + compressor + turbine wheel) - turbine housing not included

Included Components

• 1x G35-990 Supercore (compressor housing + core cartridge + turbine wheel + bearing housing)

Product Description

The Garrett 934123-5001S G35-990 Supercore is a high-capacity, high-performance turbo core designed for custom engine builds where serious power, flexibility, and flow headroom are required. With a 62 mm compressor inducer and 76 mm exducer, it accommodates high airflow demands and high-boost scenarios - making it ideal for engines from 2.0 L up to 5.5 L when paired with an appropriate turbine housing, exhaust setup, and supporting modifications. The Mar-M turbine wheel is rated to withstand exhaust-gas temperatures as high as 1050 °C, offering resilience and reliability under demanding conditions, whether for street, track, or motorsport applications.

Because this is a supercore - not a full turbo - it offers maximum flexibility: you can select a turbine housing and exhaust layout that perfectly matches your engine, manifold configuration, and power goals. The water-cooled bearing housing, along with included oil restrictor and water-fittings, helps manage thermal stress under heavy use. When built and tuned properly, this core can support up to approximately 990 HP, making it a powerful foundation for turbo swaps, high-boost builds, or custom applications where off-the-shelf turbos don't offer sufficient flow or flexibility.