4L60 Output Shaft 74678 (18 1/8” Long)
Catalog name:
Output Shaft, 700R4 (18 1/8” Long) 1982-91 (4 1/2” Long Splines)(Will Work For 3 1/2” Long Splines)
Part # 74678
Type:
Shaft
Transmissions:
4L60, 4L60E, 4L65E, 4L70E
Years:
1982-91
Size:
18 1/8” Long; 4 1/2” Long Splines; Will Work For 3 1/2” Long Splines
Data as of:
2026-10-17
Offers
No offers for this part yet.
Cross-reference numbers
| Number | System | Status |
|---|---|---|
| 74678 | WIT | ✓ catalog |
| 8647951 | OEM | ✓ catalog |
| 77737 | DACCO | ? unverified |
Where it fits
| Diagram | Position | Transmission page |
|---|---|---|
| 4L60E | 678 | 4L60E |
Other parts in 4L60E position 678:
- 74678A Output Shaft, 700R4 (18 1/4” Long)(With Electonic Pick-Up) 1987-92 (4 1/2” Long Splines)(Will Work For 3 1/2” Long)…
- 74678AA Output Shaft, 4L60E (18 1/4” 1/2”Long)(No Gov Gear) 1992-Up (4 1 /2”Long Splines)
- 74678AB Output Shaft, 4L60E (18 1/4” 1/2”Long)(No Gov Gear) 1992-Up (3 1/2”Long Splines)
- 74678B Output Shaft, 700R4 (4X4)(13 1/4”Long) 1982-92
- 74678BA Output Shaft, 4L60E (4X4)(13 1/4”Long)(No Gov Gear) 1992-Up
- 74678C Output Shaft, 700R4(4X4)(13 3/4”Long)(All Except 2.8L) 1982-92
- 74678D Output Shaft, 700R4 (17 1/2” Long)(Corvette) 1982-84
- 74678E Output Shaft, 700R4 (17 1/4”Long)(Corvette) 1985-92
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