Tomei B/B Turbocharger Kit Arms
| Category | Engine | Parts Number |
| EJ SINGLE SCROLL BX7760 | EJ20,EJ25 | TB403A-SB01A |
| EJ SINGLE SCROLL BX7960 | EJ20,EJ25 | TB403A-SB01B |
| EJ SINGLE SCROLL BX7960F | EJ20,EJ25 | TB403A-SB01D |
| EJ SINGLE SCROLL BX8265 | EJ20,EJ25 | TB403A-SB01C |
| PART NUMBER | TB403A-SB01A | TB403A-SB01B | TB403A-SB01C | TB403A-SB01D |
| TARGET HP (HP) | 380 | 400 | 450 | 400 |
| BEARING TYPE | Ball Bearing | Ball Bearing | Ball Bearing | Ball Bearing |
| INITIAL BOOST SETTING (kgf/cm2) | 1 | 1 | 1 | 1 |
| COMPRESSOR WHEEL | ||||
| ⒶIND(mm) | 52.6 | 52.6 | 54.8 | 52.6 |
| ⒷEXD(mm) | 68 | 68 | 76.2 | 68 |
| Trim | 60 | 60 | 52 | 60 |
| Blades | 6/6. | 6/6. | 6/6. | 6/6. |
| Material | A2618 | A2618 | A2618 | A2618 |
| Production | CNC BILLET | CNC BILLET | CNC BILLET | CNC BILLET |
| TURBINE WHEEL | ||||
| ⒶIND(mm) | 56 | 61 | 67 | 61 |
| ⒷEXD(mm) | 49.1 | 54 | 58.8 | 54 |
| Trim | 77 | 79 | 77 | 79 |
| Blades | 9 | 9 | 9 | 9 |
| Material | K418 | K418 | K418 | K418 |
| Production | CAST | CAST | CAST | CAST |
| COMPRESSOR HOUSING | ||||
| IND(mm) | 53.6 | 53.6 | 55.8 | 53.46 |
| EXD(mm) | 41.63 | 41.63 | 41.5 | 44.2 |
| A/R | 0.78 | 0.78 | 0.78 | 0.78 |
| TURBINE HOUSING | ||||
| IND(mm) | 45 | 45 | 45 | 45 |
| EXD(mm) | EJ | EJ | EJ | EJ |
| A/R | 0.57 | 0.57 | 0.57 | 0.57 |