Recmar Mercury Mariner 8-35HP Thermostat 60C 855676002 8M0119207
REC855676002
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Recmar Mercury / Mariner Outboard Thermostat
60°C / 140°F | Replaces 855676002
Aftermarket thermostat for selected small Mercury and Mariner four-stroke outboards, including Japan/Tohatsu-built engine families that use the 855676 thermostat design. It is not a MerCruiser inboard thermostat.
Key Features
- 60°C (140°F) opening specification
- For selected 8–35 hp Mercury/Mariner four-strokes
- Crosses to later Mercury service references
- Aftermarket Recmar part; not genuine Mercury
- Thermostat only unless gasket is pictured
Technical Specs
| Part type | Outboard cooling thermostat |
| Opening temperature | 60°C / 140°F |
| Engine cycle | Four-stroke |
| Application | Selected 8–35 hp families |
| 4Boats SKU | REC855676002 |
Compatibility / Fitment Guide
| Engine / system | Application | Fitment condition |
|---|---|---|
| Mercury / Mariner 8 & 9.9 hp 209 cc | Four-stroke | Commonly from serial 0R042475 onward; confirm parts diagram |
| Mercury / Mariner 15 & 20 hp two-cylinder | Carburetted/SeaPro four-stroke variants | Serial-specific lookup required; common checkpoints 0R235949 / 0R235168 |
| Mercury / Mariner 25 & 30 hp three-cylinder | EFI, Jet or SeaPro four-stroke variants | Confirm 855676002/005 or 8M0119207 by serial |
| Tohatsu / Nissan shared engine families | Applications listing 3NV/3R3/3SA thermostat references | Match OEM number, dimensions and gasket separately |
Not for MerCruiser inboards, two-stroke Mercury engines or every outboard within the 8–35 hp range. Gasket references 27-853702005 and 27-898101194 are separate unless shown with the product.
Part Number Cross Reference
| Mercury / Mariner | 855676002; 855676005; 8M0119207; 8M0139434 |
| Tohatsu / Nissan | 3NV-01030-0; 3R3-01030-0; 3SA-01030-0 |
| Sierra | 18-43175 |
| Recmar / 4Boats SKU | REC855676002 |
Cross-reference numbers identify compatible service applications; they do not make this aftermarket Recmar part a genuine OEM component.
Frequently Asked Questions
Is this a MerCruiser thermostat?
No. It is for specified Mercury/Mariner small four-stroke outboards.
Will it fit every 9.9 or 15 hp Mercury?
No. Confirm displacement, build origin and serial number.
What temperature does it open at?
60°C, equivalent to 140°F.
Is the gasket included?
Only the thermostat is specified; a gasket is included only if clearly pictured.
Before ordering: confirm the engine serial number and one of the listed thermostat references before purchase.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
