# Torque converter installation depth A (SB4A-EL 4AT)

Canonical URL: https://miatatorque.com/spec/torque-converter-installation-depth-sb4a/

Applicability: NB 2001–2005 (BP-Z3, 4AT) — 2003–2005 factory references identify this component manual; 2001–2002 inferred within NB2 non-turbo family.

Confidence: fsm

Distance A
22.7 mm

Always confirm against your factory manual. Match every restriction and follow all stages and procedure notes. Disputed claims must not be automatically resolved. The complete record below preserves every printed unit, source claim and procedure.

```json
{
  "id": "torque-converter-installation-depth-sb4a",
  "name": "Torque converter installation depth A (SB4A-EL 4AT)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NB",
      "years": [
        2001,
        2005
      ],
      "engines": [
        "BP-Z3"
      ],
      "trans": [
        "4AT"
      ],
      "note": "2003–2005 factory references identify this component manual; 2001–2002 inferred within NB2 non-turbo family."
    }
  ],
  "kind": "non-torque",
  "value_text": "Distance A\n22.7 mm",
  "procedure": {
    "notes": "After installing torque converter, measure between its end and converter housing face at the shown axial reference points to verify full seating. Table prints 0.89 in while procedure prints 0.88; metric agrees and controls."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "workshop-sb4a-el",
      "page": "05–13Y–50 (PDF p. 62)",
      "as_printed": "Distance A\n22.7 mm {0.88 in}",
      "verified_years": [
        2003,
        2005
      ],
      "document": {
        "id": "workshop-sb4a-el",
        "tier": 1,
        "title": "Mazda SB4A-EL Automatic Transmission Workshop Manual",
        "part_number": "9999-95-422H-99",
        "covers": [
          {
            "gen": "NB",
            "years": [
              2003,
              2005
            ],
            "engines": [
              "BP-Z3"
            ],
            "trans": [
              "4AT"
            ]
          }
        ],
        "note": "The 2003 (PDF p. 1234), 2004 (PDF p. 1254) and 2005 (PDF p. 1388) MX-5 manuals explicitly reference part 9999-95-422H-99; the supplied copies are identical to the previously audited component manual."
      }
    },
    {
      "source": "workshop-sb4a-el",
      "page": "05–50–1 (PDF p. 87)",
      "as_printed": "Torque converter and the face of the end of the converter housing\n(Distance A) (mm {in})\n22.7 {0.89}",
      "verified_years": [
        2003,
        2005
      ],
      "document": {
        "id": "workshop-sb4a-el",
        "tier": 1,
        "title": "Mazda SB4A-EL Automatic Transmission Workshop Manual",
        "part_number": "9999-95-422H-99",
        "covers": [
          {
            "gen": "NB",
            "years": [
              2003,
              2005
            ],
            "engines": [
              "BP-Z3"
            ],
            "trans": [
              "4AT"
            ]
          }
        ],
        "note": "The 2003 (PDF p. 1234), 2004 (PDF p. 1254) and 2005 (PDF p. 1388) MX-5 manuals explicitly reference part 9999-95-422H-99; the supplied copies are identical to the previously audited component manual."
      }
    }
  ],
  "jobs": [],
  "system": "transmission",
  "component": "inventory-pass-2026-10",
  "componentName": "Service measurements and fasteners",
  "sequence_diagrams": [],
  "url": "https://miatatorque.com/spec/torque-converter-installation-depth-sb4a/"
}
```