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3580365 Marine
Thermostat
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OEM interchange
Other OEM part numbers for the same part — order from any of these makers or their dealers.
Aftermarket equivalents cross-ref
Third-party equivalents (Jabsco, Sierra, WIX, Mann…) — not OEM; verify before ordering. Usually cheaper than the marine dealer.
| Equivalent P/N | Brand | Description | Source | Confidence |
|---|---|---|---|---|
| 18-3680 | Sierra | Thermostat (82°C) for MD2030 / MD2040 / D2-55 / D2-60 / D2-75. Supersedes VP 3850365. Sierra 18-3680 confirmed at seasierra.com and repowermarine.com. | seasierra.com | confirmed |