Recmar MerCruiser Flat Thermostat Cover V6 V8 17494A1
REC17494A1
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Recmar MerCruiser Flat Thermostat Cover
Selected GM V6 / V8 Applications | 17494A1
Replacement flat-style thermostat cover for selected MerCruiser GM V6 and V8 cooling systems from the mid-1980s to mid-1990s. It bolts to the matching flat-cap thermostat housing.
Key Features
- Flat-cap thermostat housing cover
- For selected GM V6 and V8 MerCruiser applications
- Direct replacement where 17494A1 is specified
- Aftermarket Recmar; not genuine Mercury
- Cover only unless gasket/hardware is pictured
Technical Specs
| Part type | Upper thermostat housing cover |
| Cover style | Flat cap |
| Engine family | Selected GM V6 and V8 |
| Quantity | 1 cover |
| 4Boats SKU | REC17494A1 |
Compatibility / Fitment Guide
| Engine / system | Application | Required check |
|---|---|---|
| MerCruiser 4.3L V6 | 175 / 4.3L and 205 / 4.3LX | Typical serial 0B527955–0F000877; confirm housing diagram |
| MerCruiser 5.0L V8 | 200 / 230 / 5.0LX variants | Typical serials within 0B522506–0F600999; verify exact model |
| MerCruiser 5.7L V8 | 260 MCM/MIE variants | Typical serials within 0B522506–0F600999; verify exact model |
| MerCruiser 7.4L MIE | Selected 340 hp inboard variants | Typical serial 5889914–0D715493; confirm 17494A1 |
Not for the two-hose-bib cover 47441A1 or every 4.3/5.0/5.7L housing. Thermostat, sleeve, gasket, fasteners and hose fittings are not included unless shown.
Part Number Cross Reference
| Mercury / MerCruiser | 17494A1 |
| Recmar / 4Boats SKU | REC17494A1 |
Cross-reference numbers identify compatible applications; verify against the serial-specific engine diagram.
Frequently Asked Questions
Will it fit every 5.7L MerCruiser?
No. It must have the matching flat-cap housing and list 17494A1.
Does it include a thermostat?
No. This listing is for the cover only unless additional parts are pictured.
Is a gasket included?
Only if shown. A new model-specific gasket should be fitted.
How do I distinguish it from 47441A1?
Compare the outlet layout and housing profile; they are not interchangeable by engine capacity alone.
Before ordering: match the original flat-cap profile and 17494A1 in the engine-serial parts diagram.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
