Cross reference › Cummins 3978021 › vs Dayco 89490
Verified equivalent — same part, cross-referenced by Orderflow. Compare specs below, or open either part's full cross-reference.
| Cummins 3978021 | Dayco 89490 | |
|---|---|---|
| Type | Belt | Belt |
| Length | 90 mm | 90 mm |
| Width | 32.8 mm | 32.8 mm |
| Diameter | 74 mm | 74 mm |
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Data is a cross-reference guide — always verify against the manufacturer specification for your application.