4L60E Extension Housing 74770M (Colorado/Canyon 4X4)
Catalog name:
Extension Housing,4L60E(Colorado/Canyon 4X4)(6 Bolts To Case)(4” Long)(Aluminum)(With 2.430” OD Rear Seal)…
Part # 74770M
Type:
Case, housing
Transmissions:
4L60, 4L60E, 4L65E, 4L70E
Size:
4” Long; With 2.430” OD Rear Seal
Data as of:
2026-10-17
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Cross-reference numbers
| Number | System | Status |
|---|---|---|
| 74770M | WIT | ✓ catalog |
| 24231140 | Casting # | ✓ catalog |
Where it fits
| Diagram | Position | Transmission page |
|---|---|---|
| 4L60E | 770 | 4L60E |
Other parts in 4L60E position 770:
- 74770 Extension Housing, 700R4/4L60E (7 1/4” On Bottom) 1982-95
- 74770A Extension Housing, 700R4/4L60E (No Mount Or Bracket) 1982-95
- 74770B Extension Housing, 700R4/4L60E (2 Hole Side Bracket Type) 1982-95
- 74770C Extension Housing, 700R4/4L60E (3 Hole Side Bracket Type) 1982-95
- 74770D Extension Housing, 700R4/4L60E 4X4 (For 208 Transfer Case) 1982-95 (4 Bolts to Case) (Cast Iron) (Cast # 15628188)…
- 74770DA Extension Housing, 700R4/4L60E 4X4 (For 208 Transfer Case) 1982-95 (4 Bolts To Case)(Cast Iron)(Cast # 14020853)…
- 74770DB Extension Housing, 700R4/4L60E 4X4 (For 208 Transfer Case) 1982-95 (4 Bolts To Case)(Cast Iron)(Cast # 14038663)…
- 74770E Extension Housing, 700R4/4L60E 4X4 (For 207/231 Transfer Case) 1982-95 (4 Bolts To Case) (Aluminum)…
- 74770EA Extension Housing, 700R4/4L60E 4X4 (For 207 Transfer Case) 1982-95 (4 Bolts To Case) (Aluminum)…
- 74770F Extension Housing, 4L60E 2WD (4 Bolts To Case)(No Mount Bracket)(With 1” Speed Sensor Hole) 1996-97
- and 14 more
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