Holset HX40 Super with a KKD turbine housing
A genuine Holset HX40 Super paired with a KKD Motorsport turbine housing. The turbo has a 60 / 86 mm compressor wheel and a 65 / 76 mm turbine wheel. Choose the housing to suit the engine, exhaust manifold and overall setup.
- Complete turbocharger with the selected KKD turbine housing.
- Supplier-quoted power class of over 650 hp. Actual power depends on the engine and the rest of the setup.
- No internal wastegate, so external boost control is required.
Technical specifications
| Turbocharger | Genuine Holset HX40 Super |
|---|---|
| Turbine housing | KKD Motorsport aftermarket housing, according to selection |
| Compressor wheel dimensions | 60 / 86 mm |
| Turbine wheel dimensions | 65 / 76 mm |
| Internal wastegate | No |
| Oil drain | 51 mm bolt spacing |
| Quoted power class | Over 650 hp, depending on the setup |
| Maximum speed | 120,000 rpm |
| Maximum quoted airflow | 0.53 kg/s, 70 lb/min |
| Maximum quoted pressure | 4.6 bar |
Turbine housing connections
| KKD housing | Manifold connection | Downpipe connection | Oil feed |
|---|---|---|---|
| 8 cm² | T3 Single | 4 × 89 mm | M12 × 1.5 |
| 12 cm² | T3 Divided | V-band, Ø 79 mm (HX35), short version | M12 × 1.5 |
| 14 cm² | T3 Divided | 6 × 101 mm | M12 × 1.5 |
| 16 cm² | T3 Divided | 6 × 101 mm | 2 × M8, bolt spacing 38 mm |
| 18 cm² | T3 Divided | 4 × 100 mm | M12 × 1.5 |
The 8 cm² housing has an undivided T3 Single inlet. The other options use divided T3 Divided inlets. Outlet connections also vary. The supplier lists a flanged oil feed with 38 mm bolt spacing and 2 × M8 fasteners for the 16 cm² version. The other versions list an M12 × 1.5 thread. Check this when choosing your oil feed line.
Installation and setup
This universal turbocharger requires adaptation to the build. Check available space, manifold and downpipe flanges and the oil line arrangement. Vehicle-specific bolt-on fitment is not specified.
Quoted pressure, flow and speed figures are supplier-stated technical maximum values, not engine-specific tuning targets.
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