BorgWarner EFR 7163 turbocharger cartridge (CHRA) with iron bearing housing. The 7163 is the top-power small-frame (B1) EFR, with a 57/71mm dual-ball-bearing compressor and 63mm turbine wheel, supporting roughly 225-550 HP. This is the center cartridge for rebuilding or assembling a 7163 turbo.
Specifications
| Type | Turbo cartridge (CHRA) |
| Model | BorgWarner EFR 7163 |
| Frame | B1 (small-frame) |
| Compressor | 57mm inducer / 71mm exducer |
| Turbine | 63mm |
| Power range | ~225-550 HP |
| Bearing housing | Iron |
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