John Deere 4045 Water Pump RE546906 / RE505980 – 5076 5082 5083 5090 5093 5101
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
| Make / Family | Applications |
|---|---|
| John Deere | 5076, 5082, 5083, 5090, 5093, 5101 and related 4045-powered equipment using this water-pump family |
Product Overview
The pump circulates coolant through the 4045 engine and radiator. Seal leakage, bearing play or impeller problems can create coolant loss, overheating or belt-drive noise, and continued operation can lead to much more expensive cylinder-head and gasket damage.
Research identifies several Deere numbers in this pump family, including RE505981, RE500737, RE500734, RE546906 and RE505980. Model names alone are not enough because 4045 installations can use different front covers and accessory drives.
Key Features & Performance
- Cooling-system replacement for John Deere 4045 applications
- Cross-referenced across multiple Deere water-pump numbers
- Restores coolant circulation when the original pump leaks or develops bearing wear
Technical Details
- Engine family: John Deere 4045
- System: engine cooling
- Verification: original pump number / engine build
Replaces Part Numbers
- RE546906
- RE505980
- RE505981
- RE500737
- RE500734
Frequently Asked Questions
Q: Why are several Deere numbers listed?
A: Water pumps are often superseded or cataloged under related service numbers. Match one of the references to the machine/engine catalog.
Q: Should coolant be reused after pump replacement?
A: Use coolant that meets the engine manufacturer specification and address contamination or corrosion rather than returning dirty coolant to the system.
Confirm 4045 engine build and water-pump reference before ordering.