Water Temperature Sender Assembly
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Quicksilver Water Temperature Sender Assembly
The Quicksilver 97258A1 Sender Assembly is a genuine Mercury Marine OEM replacement water temperature sender designed for use with Mercruiser MCM (sterndrive) and MIE (inboard) marine gas engines. This factory-original part ensures accurate coolant temperature readings are delivered to the vessel's temperature gauge, making it an essential component for proper engine monitoring and protection.
The sender features standard 1/2 in. x 14 NPT threads for straightforward installation into compatible engine blocks and cooling system ports. Sourced directly from the Mercury Marine factory, this is not an aftermarket substitute — it is the exact OEM part in new condition, backed by Mercury's limited parts warranty.
Compatible equivalent parts from other suppliers include Sierra Marine 18-5898, Recmar Marine REC97258A1, OBR Red Rhino MR-584, and Mallory Marine 9-42401, confirming broad industry recognition of this sender's specification. The part appears across multiple Mercruiser wiring harness, electrical component, and ignition diagrams for 4.3L (262 CID V6), 5.0L (305 CID V8), 5.7L (350 CID V8), 7.4L (454 CID V8), and 7.9L (482 CID V8) GM-based gas engine families in both sterndrive and inboard configurations.
Key Features
- Genuine Mercury Marine factory OEM part — not aftermarket
- 1/2 in. x 14 NPT thread size for precise fitment
- Designed for use with analog temperature gauges
- Compatible with MCM (sterndrive) and MIE (inboard) Mercruiser engines
- Weighs approximately 0.17 lbs; compact dimensions of 2.18 in. x 1.18 in. x 1.18 in.
- Equivalent to Sierra Marine 18-5898, Recmar REC97258A1, OBR Red Rhino MR-584, and Mallory Marine 9-42401
- Guaranteed product fitment as a direct OEM replacement
