Recmar MerCruiser GM V6 V8 Thermostat Housing Conversion Kit 87290A23
REC87290A23
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Recmar MerCruiser Thermostat Housing Conversion Kit
4.3L / 5.0L / 5.7L Center-Riser | 87290A23
Multi-piece thermostat housing conversion kit for selected MerCruiser GM 4.3L V6 and 5.0/5.7L small-block V8 engines with center-riser exhaust. It replaces specified obsolete one-piece flat-cover housing designs.
Key Features
- Six-pipe/tee-ball thermostat housing conversion
- For specified GM 4.3L, 5.0L and 5.7L engines
- Replaces obsolete one-piece 16413A3/A9 housings
- Aftermarket Recmar kit; not genuine Mercury
- Kit components supplied as pictured
Technical Specs
| Part type | Thermostat housing conversion kit |
| Engine family | GM V6 / small-block V8 |
| Exhaust layout | Center-riser |
| Cooling design | Specified standard-cooling conversion |
| 4Boats SKU | REC87290A23 |
Compatibility / Fitment Guide
| Engine / system | Application | Required check |
|---|---|---|
| MerCruiser 4.3L V6 | Center-riser configuration using old flat-cover housing | Verify 16413A3/A9 supersession |
| MerCruiser 5.0L / 305 V8 | Center-riser standard-cooling configuration | Threaded hole must match required orientation |
| MerCruiser 5.7L / 350 V8 | Center-riser standard-cooling configuration | Compare complete hose route before installation |
| Conversion requirement | Old one-piece 16413A3 or 16413A9 housing | Kit converts to 87290A4/47441A1 tee-ball layout |
Not a universal kit for every 4.3/5.0/5.7L engine. Excludes dry-joint and closed-cooling layouts unless the serial-specific service instruction calls for this conversion. Thermostat may be separate; supplied contents are those pictured.
Part Number Cross Reference
| Mercury / MerCruiser kit | 87290A23 |
| Obsolete housings replaced | 16413A3; 16413A9 |
| Core lower housing | 87290A4 |
| Upper cover | 47441A1 |
| Tee-ball valve | 22-98477A2 |
| GLM kit | 13231 |
| Recmar / 4Boats SKU | REC87290A23 |
Cross-reference numbers identify the housing design; verify the complete cooling-system diagram before ordering.
Frequently Asked Questions
Is this only the lower housing?
No. It is a conversion kit; compare all pictured components.
Does it replace 16413A3/A9?
Yes, in the specified center-riser applications.
Will it fit closed cooling?
Do not assume so; it is for the specified standard-cooling conversion layout.
Is the thermostat included?
Only if clearly pictured; verify kit contents before installation.
Before ordering: confirm old housing 16413A3/A9, center-riser exhaust, hose routing and threaded-hole orientation.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
