# Automatic one-way clutch inner-race Allen-head bolts (NA 1.8)

Canonical URL: https://miatatorque.com/spec/at-one-way-clutch-inner-race-bolts-na-bp/

Applicability: NA 1994–1997 (BP, 4AT)

Confidence: fsm

113–156 in·lb / 12.8–17.6 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": "at-one-way-clutch-inner-race-bolts-na-bp",
  "name": "Automatic one-way clutch inner-race Allen-head bolts (NA 1.8)",
  "aliases": [],
  "applies_to": [
    {
      "gen": "NA",
      "years": [
        1994,
        1997
      ],
      "engines": [
        "BP"
      ],
      "trans": [
        "4AT"
      ]
    }
  ],
  "kind": "torque",
  "torque": {
    "nm": [
      12.8,
      17.6
    ],
    "kgfcm": [
      130,
      180
    ],
    "inlb": [
      113,
      156
    ]
  },
  "procedure": {
    "notes": "Use new bolts and dished washers; tighten with SST 49 0378 346 (replacement callout on K–103). 1994 factory evidence; applicability to 1995–1997 is inferred within the owner-approved NA 1.8 year group."
  },
  "confidence": "fsm",
  "sources": [
    {
      "source": "fsm-1994",
      "page": "K–105",
      "as_printed": "12.8–17.6 N·m {130–180 kgf·cm, 113–156 in·lbf}",
      "verified_years": [
        1994,
        1994
      ],
      "torque": {
        "nm": [
          12.8,
          17.6
        ],
        "kgfcm": [
          130,
          180
        ],
        "inlb": [
          113,
          156
        ]
      },
      "document": {
        "id": "fsm-1994",
        "tier": 1,
        "title": "1994 Mazda MX-5 Miata Workshop Manual",
        "covers": [
          {
            "gen": "NA",
            "years": [
              1994,
              1997
            ],
            "engines": [
              "BP"
            ]
          }
        ],
        "note": "Mazda's base manual for 1994–97; later model years got supplements, which we haven't checked yet."
      }
    }
  ],
  "jobs": [],
  "system": "transmission",
  "component": "reaudit-1994",
  "componentName": "Additional 1994 factory service specifications",
  "sequence_diagrams": [],
  "url": "https://miatatorque.com/spec/at-one-way-clutch-inner-race-bolts-na-bp/"
}
```