# Differential bearing cap bolts (NA 1.8L)

Canonical URL: https://miatatorque.com/spec/diff-bearing-cap-bolts-na-bp/

Applicability: NA 1994 (BP); NA 1997 (BP)

Confidence: single-source

27–38 ft·lb / 37–52 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-bearing-cap-bolts-na-bp",
  "name": "Differential bearing cap bolts (NA 1.8L)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NA",
      "years": [
        1994,
        1994
      ],
      "engines": [
        "BP"
      ]
    },
    {
      "gen": "NA",
      "years": [
        1997,
        1997
      ],
      "engines": [
        "BP"
      ]
    }
  ],
  "kind": "torque",
  "torque": {
    "nm": [
      37,
      52
    ],
    "ftlb": [
      27,
      38
    ]
  },
  "confidence": "single-source",
  "sources": [
    {
      "source": "mitchell1-1994-differential",
      "page": "PDF p. 11",
      "as_printed": "Differential Carrier Bearings Cap Bolts 27-38 (37-52)",
      "torque": {
        "nm": [
          37,
          52
        ],
        "ftlb": [
          27,
          38
        ]
      },
      "note": "Claim for the 1994 Miata printout; does not extend this spec's applicability.",
      "document": {
        "id": "mitchell1-1994-differential",
        "tier": 2,
        "title": "Mitchell1 1994 MX-5 Miata: differential",
        "covers": [
          {
            "gen": "NA",
            "years": [
              1994,
              1994
            ]
          }
        ],
        "url": "https://www.mellens.net/mazda/Mazda-Miata-1994/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."
      }
    },
    {
      "source": "mitchell1-1997-differential",
      "page": "PDF p. 22",
      "as_printed": "Differential Carrier Bearings Cap Bolts 28-38 (38-52)",
      "torque": {
        "nm": [
          38,
          52
        ],
        "ftlb": [
          28,
          38
        ]
      },
      "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-bearing-cap-bolts-na-bp/"
}
```