Recmar Mercury Mariner 40-60HP 3-Cyl Thermostat Kit 110°F 850055A2
REC850055A2
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Mercury / Mariner 40–60HP Thermostat Kit
Three-Cylinder 2-Stroke | 110°F
Aftermarket thermostat service kit for selected Mercury and Mariner 40–60hp three-cylinder two-stroke outboards using Mercury reference 850055A2.
Key Features
- 110°F thermostat application
- For 40–60hp three-cylinder Mercury/Mariner outboards
- Includes Jet and BigFoot application families
- 1997+ primary fitment era
- Recmar aftermarket kit
Technical Specs
| Type | Outboard thermostat kit |
| Temperature | 110°F / approx. 43°C |
| Engine | Three-cylinder 2-stroke |
| Horsepower | 40 / 45 Jet / 50 / 55 / 60 hp |
| SKU | REC850055A2 |
Compatibility / Fitment Guide
| Engine family | Verified application | Notes / exclusions |
|---|---|---|
| 40/45 Jet | Selected 40hp and 45 Jet three-cylinder engines | Confirm serial and 850055A2 reference. |
| 50/55/60 hp | Selected three-cylinder two-stroke outboards, principally 1997+ | Includes applicable 55/60 Jet variants. |
| 60 BigFoot | Selected three-cylinder 60hp BigFoot models | Gearcase type alone does not prove thermostat fitment. |
| Exclusion | Four-cylinder 40–60hp; four-stroke models; MerCruiser engines | Different cooling system. |
Confirm the full model, serial number, cooling-system type and original part number.
Part Number Cross Reference
| Mercury / Mariner | 850055A2 |
| Mercury previous | 850055A1; 13141 application |
| 4Boats SKU | REC850055A2 |
Recmar aftermarket replacement; brand names and references identify compatibility only.
Frequently Asked Questions
Is this for MerCruiser?
No. It is for selected Mercury/Mariner outboards.
What year range fits?
The principal catalogue application is 1997 and newer, subject to serial number.
Does it fit four-strokes?
No; the verified application is three-cylinder two-stroke.
Installation note: Fit on a cool engine, renew damaged seals, clean mating surfaces and verify correct operating temperature after service.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.