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5R55S Extension Housing 16770B (Transfer Case Adapter)

Catalog name:
Extension Housing, 5R55N/5R55S/5R55W 4x4 (Transfer Case Adapter)
Extension Housing, 5R55N/5R55S/5R55W 4x4 (Transfer Case Adapter) — Part # 16770B
Part # 16770B
Type:
Case, housing
Transmissions:
5R55N, 5R55S, 5R55W
Data as of:
2026-10-17

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Cross-reference numbers

NumberSystemStatus
16770BWIT✓ catalog

Where it fits

DiagramPositionTransmission page
5R55S770—
Other parts in 5R55S position 770:
  • 16770A Extension Housing, 5R55N/5R55S/5R55W 2WD (Uses 2.364”OD Rear Seal) (Cast # XW4P-7A039-AA) 1999-Up
  • 16770G Extension Housing, 5R55S/5R55W 2WD (Uses 2.484”OD Rear Seal)(6 1/2” Long) (2 Bolt Mount) 2002-Up
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