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4.9L (VIN Y, 8th digit)
- AIR inner head
  - E4OD transmission
  - Without E4OD transmission
- AIR inner manifold
  - E4OD transmission
  - Without E4OD transmission
5.0L (VIN N, 8th digit)
5.8L (VIN H, 8th digit, 8-351W)

Engine Assembly for 1991 Ford F-150

Fits: 4.9L VIN Y, 8th digit AIR inner manifold Without E4OD transmission (change)

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