# Differential drive pinion locknut (1997)

Canonical URL: https://miatatorque.com/spec/diff-drive-pinion-locknut-1997/

Applicability: NA 1997 (BP)

Confidence: single-source

94–209 ft·lb / 128–284 N·m

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": "diff-drive-pinion-locknut-1997",
  "name": "Differential drive pinion locknut (1997)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NA",
      "years": [
        1997,
        1997
      ],
      "engines": [
        "BP"
      ]
    }
  ],
  "kind": "torque",
  "torque": {
    "nm": [
      128,
      284
    ],
    "ftlb": [
      94,
      209
    ]
  },
  "procedure": {
    "notes": "Overhaul fastener; setting pinion bearing preload is required. Do not treat this as a stand-alone replacement torque. See the cited differential overhaul procedure."
  },
  "confidence": "single-source",
  "sources": [
    {
      "source": "mitchell1-1997-differential",
      "page": "PDF p. 22",
      "as_printed": "Drive Pinion Lock Nut 94-209 (128-284)",
      "torque": {
        "nm": [
          128,
          284
        ],
        "ftlb": [
          94,
          209
        ]
      },
      "note": "Claim for the 1997 Miata printout; does not extend this spec's applicability.",
      "document": {
        "id": "mitchell1-1997-differential",
        "tier": 2,
        "title": "Mitchell1 1997 MX-5 Miata: differential",
        "covers": [
          {
            "gen": "NA",
            "years": [
              1997,
              1997
            ]
          }
        ],
        "url": "https://www.mellens.net/mazda/Mazda-Miata-1997/differential.pdf",
        "note": "Secondary service printout. Some articles cover multiple Mazda models or years; citations use only the identified Miata entries. Other Mitchell1 printouts count as the same publisher, not independent consensus."
      }
    }
  ],
  "jobs": [],
  "system": "driveshaft-differential",
  "component": "differential",
  "componentName": "Differential",
  "url": "https://miatatorque.com/spec/diff-drive-pinion-locknut-1997/"
}
```