Barr MerCruiser GM Inline 4 6 Lower Thermostat Housing MC-29-47587
BAMC29-47587
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Barr MerCruiser Inline-Engine Thermostat Housing
GM Inline 4 & 6 Cylinder | MC-29-47587
Barr Marine replacement lower thermostat housing for selected legacy MerCruiser GM inline four- and six-cylinder petrol engines.
Key Features
- Lower thermostat housing
- For selected GM inline four- and six-cylinder MerCruisers
- Barr Marine replacement casting
- Replaces Mercury 47587A2 where specified
- Bare housing unless components are pictured
Technical Specs
| Part type | Lower thermostat housing |
| Engine layout | GM inline four / inline six |
| Common models | 120, 140, 160, 165, 200 |
| Brand | Barr Marine |
| 4Boats SKU | BAMC29-47587 |
Compatibility / Fitment Guide
| Engine / system | Application | Required check |
|---|---|---|
| MerCruiser 120 / 140 | GM inline-four petrol | Includes 120R/140R where parts diagram lists 47587A2 |
| MerCruiser 160 / 165 | GM inline-six petrol | Confirm casting and hose-port layout |
| MerCruiser 200 | Selected GM inline engine application | Serial-specific parts diagram must match |
| Replacement service | Existing lower housing crossed to MC-29-47587 | Match upper cover and gasket interfaces |
Not for GM V6/V8, Ford V8 or MerCruiser 470/3.7L closed-cooling engines. Thermostat, upper cover, gaskets, fittings and mounting hardware are separate unless pictured.
Part Number Cross Reference
| Mercury / MerCruiser | 47587A2; 47587 |
| Barr Marine | MC-29-47587; BAMC29-47587 |
| 4Boats SKU | BAMC29-47587 |
Cross-reference numbers identify the housing design; verify the complete cooling-system diagram before ordering.
Frequently Asked Questions
Will it fit a 4.3L V6?
No. This housing is for specified inline four/six-cylinder engines.
Does it include a thermostat?
No. It is the lower housing unless additional parts are pictured.
Will it fit 120R/140R?
Yes where the parts diagram specifies the 47587A2 housing.
Is it genuine Mercury?
No. It is a Barr Marine replacement.
Before ordering: confirm the inline engine model and Mercury 47587A2 housing profile.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.