Name: Recmar MerCruiser Closed Cooling Thermostat Housing 55131A5 18-3532
Brand: RECAMBIOS
SKU: REC55131A5
Price: 452.21 GBP
Availability: InStock

Recmar MerCruiser Closed Cooling Thermostat Housing 55131A5 18-3532

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Our stock levels are dynamic and can change frequently. If a product appears to be in stock, it may have already sold out. Please contact us if you have any questions about availability. Thank you for your understanding.

£452.21

Tax included.

Recmar MerCruiser Closed-Cooling Housing

GM V6 / V8 | Replaces 55131A5

Thermostat housing-and-cover assembly for selected MerCruiser GM V6 and V8 inboard/sterndrive engines fitted with a closed/fresh-water cooling system.

FITMENT CHECK: Closed cooling is mandatory for this application. Standard/raw-water-cooled engines use different water-routing housings even at the same displacement.

Key Features

Thermostat housing and cover for closed cooling
For specified GM V6 and 305/350/454/502 cid V8 engines
Aftermarket Recmar replacement
Crosses to Sierra 18-3532 and GLM 13550
Components supplied as pictured

Technical Specs

Part type	Thermostat housing and cover
Cooling system	Closed / fresh-water cooled
Engine family	GM V6 and V8 where specified
Supply type	Aftermarket Recmar
4Boats SKU	REC55131A5

Compatibility / Fitment Guide

Engine / system	Application	Required check
MerCruiser 5.0L / 5.7L MIE	305/350 cid closed-cooled V8	Examples include 230/260 and later 5.7L MIE; verify serial
MerCruiser 7.4L / 8.2L	454/502 cid closed-cooled V8	Selected MIE/Gen V/VI applications; confirm housing diagram
MerCruiser GM V6	Specified closed-cooled installations	Parts diagram must list 55131A5
Serial examples	5.7L MIE 0F025000–0F622099; 7.4L/8.2L ranges vary	Always verify exact engine serial

Not for standard/raw-water cooling or center-riser housing 87290A4. Thermostat, seals, hose fittings and hardware are included only when clearly pictured.

Part Number Cross Reference

Mercury / MerCruiser	55131A5; 55131; 55131T; 55132A5; 55132T
Sierra	18-3532
GLM	13550
Recmar / 4Boats SKU	REC55131A5

Cross-reference numbers identify the housing design; verify the complete cooling-system diagram before ordering.

Frequently Asked Questions

Will it fit a raw-water-cooled 5.7L?
No. This housing is for closed/fresh-water cooling.

Does it include a thermostat?
Only if it is clearly shown with the product.

Will it fit big-block V8 engines?
Selected 454/502 closed-cooled applications use it; verify the serial diagram.

Is it genuine Mercury?
No. It is an aftermarket Recmar replacement.

Before ordering: confirm closed cooling and Mercury housing 55131A5 in the engine-serial parts diagram.

For the products under £150 the shipping is £6.99.

Free delivery for most items over £150.

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Recmar MerCruiser Closed Cooling Thermostat Housing 55131A5 18-3532