# Transmission oil pump outer gear-to-crescent clearance (SB4A-EL 4AT)

Canonical URL: https://miatatorque.com/spec/oil-pump-outer-gear-crescent-clearance-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

Standard: 0.11–0.14 mm; maximum: 0.3 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": "oil-pump-outer-gear-crescent-clearance-sb4a",
  "name": "Transmission oil pump outer gear-to-crescent clearance (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": "Standard: 0.11–0.14 mm; maximum: 0.3 mm",
  "procedure": {
    "notes": "Procedure step 3 explicitly measures outer gear-to-crescent clearance. Technical table labels corresponding identical metric row Inner gear and outer gear. Use the procedure measuring point. Replace pump if outside specification. Table rounds maximum inches to 0.01; metric agrees. the procedure measuring point, outer gear-to-crescent, controls over the conflicting technical-table label. Metric values control."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "workshop-sb4a-el",
      "page": "05–13Y–10 (PDF p. 22)",
      "as_printed": "Clearance\nStandard: 0.11—0.14 mm {0.0044—0.0055 in}\nMaximum: 0.3 mm {0.0118 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": "Oil pump\nInner gear and outer gear (mm {in})\nStandard 0.11—0.14 {0.0044—0.0055}\nMaximum 0.3 {0.01}",
      "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/oil-pump-outer-gear-crescent-clearance-sb4a/"
}
```