⚡ Electrify your 4WD—because your truck deserves a smarter upgrade!
The Dorman 600-490 4WD Actuator kit modernizes older Chevrolet and GMC trucks by replacing outdated thermal differential actuators with a high-performance electric actuator and harness. This upgrade delivers faster, more reliable 4WD engagement, restoring full off-road capability. Engineered for precise fitment on select models from 1988 to 1996, it’s a complete, trusted solution backed by decades of automotive expertise.
| Manufacturer | Dorman Products |
| Brand | Dorman |
| Model | Dorman 600-490 |
| Item Weight | 1.41 pounds |
| Product Dimensions | 9.84 x 2.95 x 10 inches |
| Item model number | 600-490 |
| Exterior | Ready To Paint If Needed |
| Manufacturer Part Number | 600-490 |
| OEM Part Number | 26013495; 26060073; 88959465 |
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