# Drive gear radial clearances (Y16M-D 6MT)

Canonical URL: https://miatatorque.com/spec/y16m-drive-gear-radial-clearance/

Applicability: NB 2001–2005 (BP-Z3, 6MT) — 2003 factory component-manual evidence; other years inferred within the 2001–2005 normally aspirated NB2 family. Does not infer MSM.

Confidence: fsm

Radial clearance
(mm {in})
1st 0.015–0.066 {0.0006–0.0025}
2nd 0.015–0.066 {0.0006–0.0025}
3rd 0.015–0.068 {0.0006–0.0026}
4th 0.065–0.115 {0.0026–0.0045}
5th (Drive gear) 0.029–0.072 {0.0012–0.0028}
6th 0.015–0.068 {0.0006–0.0026}
Reverse 0.015–0.066 {0.0006–0.0025}

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": "y16m-drive-gear-radial-clearance",
  "name": "Drive gear radial clearances (Y16M-D 6MT)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NB",
      "years": [
        2001,
        2005
      ],
      "engines": [
        "BP-Z3"
      ],
      "trans": [
        "6MT"
      ],
      "note": "2003 factory component-manual evidence; other years inferred within the 2001–2005 normally aspirated NB2 family. Does not infer MSM."
    }
  ],
  "kind": "non-torque",
  "value_text": "Radial clearance\n(mm {in})\n1st 0.015–0.066 {0.0006–0.0025}\n2nd 0.015–0.066 {0.0006–0.0025}\n3rd 0.015–0.068 {0.0006–0.0026}\n4th 0.065–0.115 {0.0026–0.0045}\n5th (Drive gear) 0.029–0.072 {0.0012–0.0028}\n6th 0.015–0.068 {0.0006–0.0026}\nReverse 0.015–0.066 {0.0006–0.0025}",
  "procedure": {
    "notes": "Measure each gear radially with a dial gauge. Inspection ranges. The source says to replace the synchronizer ring if outside this radial-clearance range; preserve the measurement identity. Normally aspirated NB2 6MT only; actual 2003 evidence, other 2001–2005 years inferred."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "workshop-y16m-d-2003",
      "page": "05–11–12 (PDF p. 25); 05–50–1 (PDF p. 46)",
      "as_printed": "Radial clearance\n(mm {in})\n1st 0.015—0.066 {0.0006—0.0025}\n2nd 0.015—0.066 {0.0006—0.0025}\n3rd 0.015—0.068 {0.0006—0.0026}\n4th 0.065—0.115 {0.0026—0.0045}\n5th (Drive gear) 0.029—0.072 {0.0012—0.0028}\n6th 0.015—0.068 {0.0006—0.0026}\nReverse 0.015—0.066 {0.0006—0.0025}",
      "verified_years": [
        2003,
        2003
      ],
      "document": {
        "id": "workshop-y16m-d-2003",
        "tier": 1,
        "title": "Mazda Y16M-D Manual Transmission Workshop Manual, March 2003",
        "part_number": "9999-95-T15M-D",
        "covers": [
          {
            "gen": "NB",
            "years": [
              2003,
              2003
            ],
            "engines": [
              "BP-Z3"
            ],
            "trans": [
              "6MT"
            ]
          }
        ]
      }
    }
  ],
  "jobs": [],
  "system": "transmission",
  "component": "inventory-pass-2026-10",
  "componentName": "Service measurements and fasteners",
  "sequence_diagrams": [],
  "url": "https://miatatorque.com/spec/y16m-drive-gear-radial-clearance/"
}
```