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SKU: TS-1-6870B-T4082E | UPC: 9329677030945
Turbosmart 6870B (Kompact) T4 0.82AR Externally Wastegated TS-1 Turbocharger for 2004-2021 Subaru WRX STI, Nissan RB26, Toyota 2JZ
The Turbosmart 6870B Kompact TS-1 turbocharger features a T4 0.82 A/R divided housing with external wastegate port for precise boost control in high-performance builds. It fits custom manifolds on 2.0-3.0L engines including Subaru EJ25/257, Nissan RB25/26, and Toyota 2JZ-GTE. Expect fast spool-up under 4000 RPM and reliable power to 750hp with water/oil cooling.
Key Features
- Dual Ceramic Ball Bearing CHRA: Reduces friction for 25% faster spool than journal bearing turbos with proven 200,000km durability in racing.
- Billet 2618 Compressor Wheel 68/96mm: 50 trim inducer with extended tips flows 110+ lbs/min for massive top-end power without surge.
- Inconel Turbine Wheel 70/62mm: 76 trim withstands 1050°C exhaust temps for track-proven heat resistance in 750hp applications.
- T4 Divided 0.82 A/R Housing: V-band in/outlets balance low-end response and high RPM flow with external wastegate compatibility.
- Water/Oil Cooled Center Housing: Ensures thermal stability and extends service life in daily driven or race setups.
Product Notes
- Special order item, lead time may apply based on stock.
- Requires compatible external wastegate like Turbosmart IWG75 for full function.
- Securely packaged in reinforced box to prevent shipping damage.
Installation Notes
- Professional installation recommended.
- Custom T4 manifold required, V-band clamps included for turbine housing.
- Oil feed line M12x1.25, drain M14x1.5, water ports M14x1.5 compatible with AN-4 fittings.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2021 | Subaru | Impreza | WRX STI (EJ257) |
| 1989-2004 | Nissan | Skyline | R32/R33/R34 GT-R (RB26DETT) |
| 1993-1998 | Toyota | Supra | JZA80 (2JZ-GTE) |
| 1989-2002 | Nissan | Skyline | R32/R33/R34 GTS-T (RB25DETT) |
| 2002-2007 | Subaru | Impreza | WRX (EJ255) |
Why Choose Turbosmart?
- Motorsport heritage from Australian WTAC champions and World Rally teams.
- Precision CNC machined components for consistent dyno results.
- Lifetime structural warranty on CHRA with proper installation.
Frequently Asked Questions
-
Q: Does this turbo bolt directly to stock manifolds on Subaru STI?
A: No, requires aftermarket T4 flange manifold for EJ25 applications, common in 500+hp builds. -
Q: What materials are used in construction?
A: Billet 2618 aluminum compressor, Inconel turbine wheel and housing, Ni-Resist turbine housing for extreme heat cycles. -
Q: What warranty coverage applies?
A: Turbosmart offers 2-year unlimited mileage warranty, extendable to lifetime on CHRA with registered installation.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock - ships same or next business day
- Packaging: Reinforced double-wall box 20x18x16 inches
- Weight: 32.2 lbs (14.6 kg)
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