Name: Recmar MerCruiser MPI Closed Cooling Thermostat 170F 864493
Brand: RECAMBIOS
SKU: REC864493
Price: 41.82 GBP
Availability: InStock

Recmar MerCruiser MPI Closed Cooling Thermostat 170F 864493

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£41.82

Tax included.

Recmar MerCruiser 170°F Thermostat

MPI • Dry-Joint Exhaust • Closed Cooling | 864493

Replacement 77°C thermostat for specified MerCruiser multi-port-injection petrol sterndrives fitted with dry-joint exhaust and a closed/fresh-water cooling system.

FITMENT CHECK: All three conditions must match: MPI engine, dry-joint exhaust and closed cooling. The same engine capacity with standard/raw-water cooling can use a different thermostat.

Key Features

170°F / 77°C opening specification
For specified MerCruiser MPI petrol engines
Dry-joint exhaust and closed-cooling application
Aftermarket Recmar; not genuine Quicksilver
One thermostat supplied

Technical Specs

Part type	Engine coolant thermostat
Temperature	170°F / 77°C
Fuel system	MPI
Cooling	Closed / fresh-water cooled
4Boats SKU	REC864493

Compatibility / Fitment Guide

Engine family	Application	Required check
MerCruiser 4.3L / 4.5L	MPI sterndrive	Dry-joint exhaust plus closed cooling; serial-specific parts diagram must list 864493
MerCruiser 5.0L / 5.7L	MPI sterndrive	Dry-joint exhaust plus closed cooling; verify exact engine serial
MerCruiser 6.2L	MPI sterndrive	Dry-joint exhaust plus closed cooling; confirm 864493

Not for carburetted engines, wet-joint exhaust, standard/raw-water cooling or any MerCruiser that specifies a 140°F or 160°F thermostat. A gasket is not included unless pictured.

Part Number Cross Reference

Mercury / Quicksilver	864493
Recmar / 4Boats SKU	REC864493

References are for application identification. This listing is an aftermarket Recmar replacement, not a genuine OEM part.

Frequently Asked Questions

Will it fit a raw-water-cooled 5.7L?
No. This 170°F application is for the specified closed-cooled MPI/dry-joint configuration.

Does capacity alone confirm fit?
No. Exhaust joint, fuel system, cooling arrangement and serial must all match.

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

Is a gasket included?
Only if clearly shown; otherwise order the correct seal separately.

Before ordering: confirm MPI, dry-joint exhaust, closed cooling and OEM reference 864493.

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

Free delivery for most items over £150.

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Recmar MerCruiser MPI Closed Cooling Thermostat 170F 864493