How to Properly Address Issues with the Thermostat Housing on a 2.3L Engine in a Mercury Mariner?

A safe method to service the thermostat housing on a 2.3L engine begins with positioning the vehicle in NEUTRAL mode on a hoist. Start by draining the cooling system before you proceed to disconnect the accessory drive belt. Detach both hoses from the thermostat housing where they connect to the heater and lower portion of the radiator. Secure the thermostat housing by removing its three securing bolts and gasket. Follow up the new thermostat housing installation by tightening it to 10 Nm (89 lb-in). Inspection of the gasket will determine whether you need to install a new one. The cooling system requires completing with filling and bleeding.

How to service the thermostat housing on a 4.0L SOHC engine on Mercury Mountaineer?

Before servicing the 4.0L SOHC engine thermostat housing the operator must drain the engine cooling system. The service of a 4.0L SOHC engine requires you to disconnect the engine coolant temperature (ECT) sensor electrical connector followed by releasing the upper radiator hose clamp then disconnecting the heater hose. You should move the bypass hose clamp to the bottom section of the hose before you continue. First remove the bolts fastening the thermostat housing before extracting the housing. The bolts should be tightened to 12 Nm during the installation process (9 ft. lbs.). Assess the O-ring seal located in the thermostat housing and substitute it with a fresh one if required. Reverse all steps of removal and you will finish the installation process.

How to service and repair the thermostat housing on Mercury Cougar?

Before performing repairs on the thermostat housing one must drain the cooling system contents. First remove all coolant hoses attached to the thermostat housing before disconnecting the engine coolant temperature sensor and temperature gauge sender electrical connectors. The next step involves disconnecting the thermostat housing coolant hose before removing the housing by unfastening all bolts from the housing and the screws. Discard the O-ring seal. The installation procedure requires following the steps from removal in reverse order with proper filling of the cooling system.

OEM Mercury Thermostat Housing

Engine Coolant Thermostat Housing

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34 Thermostat Housings found

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Mercury Thermostat Housing, Lower
Part Number: GL2Z-8592-A
$42.37 MSRP: $61.67
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Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Housing, Lower; Thermostat Housing Cover; Lower Housing
- Position: Lower
- Replaces: 1L2Z-8592-BB, RH-148, RH-93
Fits the following Mercury Models:
- Mountaineer | 2001-2010 | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS, 8 Cyl 4.6 L GAS
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Mercury Thermostat Housing, Upper
Part Number: F5RZ-8K528-CC
$91.98 MSRP: $133.88
You Save: $41.90 (32%)
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Product Specifications
- Other Name: Connection - Water Inlet; Engine Coolant Thermostat Housing, Upper; Thermostat Housing Cover; Connector Tube; Housing
- Position: Upper
- Replaces: F5RZ-8K528-B
Fits the following Mercury Models:
- Cougar | 1999-2002 | Base, S, V6 | 6 Cyl 2.5 L GAS
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Mercury Thermostat Housing, Lower
Part Number: 2L5Z-8592-BB
$46.13 MSRP: $67.15
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Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Housing, Lower; Engine Coolant Water Outlet; Thermostat Housing Cover; Connection - Water Outlet; Water Outlet
- Manufacturer Note: Housing For 2 Clip In Style Sensors
- Position: Lower
Fits the following Mercury Models:
- Mountaineer | 2001 | Base | 6 Cyl 4.0 L GAS
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Mercury Thermostat Housing
Part Number: FOTZ-8592-F
$38.42 MSRP: $53.14
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Product Specifications
- Other Name: Connection - Water Outlet; Thermostat Housing Cover
- Manufacturer Note: Connector , Gas
Fits the following Mercury Models:
- Colony Park | 1987-1991 | GS, LS | 8 Cyl 5.0 L GAS
- Grand Marquis | 1984-1991 | Base, Colony Park, GS, LS | 8 Cyl 5.0 L GAS, 8 Cyl 5.8 L GAS
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Mercury Water Outlet
Part Number: 9L8Z-8592-A
$23.99 MSRP: $32.64
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Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Inlet Flange; Engine Coolant Water Outlet; Connector; Connection - Water Outlet
Fits the following Mercury Models:
- Mariner | 2009-2011 | Base, Premier | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
- Milan | 2010-2011 | Premier | 6 Cyl 3.0 L FLEX
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Mercury Thermostat Housing
Part Number: F1VY-8592-AA
$5.62 MSRP: $7.77
You Save: $2.15 (28%)
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Product Specifications
- Other Name: Connection - Water Outlet; Thermostat Housing Cover; Outlet Assembly
- Manufacturer Note: Connector , NGV, BEFORE 12/10/98
Fits the following Mercury Models:
- Grand Marquis | 1992-1995 | GS, LS | 8 Cyl 4.6 L GAS
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Mercury Thermostat Housing
Part Number: 7T4Z-8A586-B
$830.63 MSRP: $1149.10
You Save: $318.47 (28%)
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Product Specifications
- Other Name: Connection Water Outlet; Thermostat Housing Cover; Housing Assembly; Connection - Water Outlet
- Replaces: 7T4Z-8A586-A
Fits the following Mercury Models:
- Sable | 2008-2009 | Base, Premier | 6 Cyl 3.5 L GAS
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Mercury Drain Hose Connector, Rear
Part Number: 8L8Z-8592-B
$13.78 MSRP: $18.75
You Save: $4.97 (27%)
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Product Specifications
- Other Name: Connection Water Outlet; Sunroof Drain Hose Adapter, Rear
- Position: Rear
- Replaces: RH-182, 8L8Z-8592-A
Fits the following Mercury Models:
- Mariner | 2008-2011 | Base, Hybrid, Premier | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L GAS, 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
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Mercury Thermostat Housing
Part Number: F8RZ-8592-AG
Product Specifications
- Other Name: Housing - Thermostat; Thermostat Housing Cover
Fits the following Mercury Models:
- Cougar | 1999-2002 | Base | 4 Cyl 2.0 L GAS
- Mystique | 1999-2000 | GS | 4 Cyl 2.0 L GAS
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Mercury Thermostat Housing, Upper
Part Number: 7R3Z-8592-A
$25.85 MSRP: $36.67
You Save: $10.82 (30%)
Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Housing, Upper; Engine Coolant Water Outlet; Thermostat Housing Cover; Water Outlet; Thermostat Outlet; Upper Housing; Connection - Water Outlet
- Position: Upper
- Replaces: 6L2Z-8592-DA
Fits the following Mercury Models:
- Mountaineer | 2005-2010 | Convenience, Luxury, Premier | 8 Cyl 4.6 L GAS
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Mercury Thermostat Housing
Part Number: F5TZ-8592-CA
Product Specifications
- Other Name: Connection - Water Outlet; Thermostat Housing Cover
Fits the following Mercury Models:
- Mountaineer | 1997-1998 | Base | 8 Cyl 5.0 L GAS
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Mercury Thermostat Housing
Part Number: F6AZ-8592-AB
Product Specifications
- Other Name: Connection Water Outlet; Thermostat Housing Cover; Outlet Assembly; Connection - Water Outlet
- Manufacturer Note: CONNECTOR
Fits the following Mercury Models:
- Grand Marquis | 1996-2000 | GS, LS | 8 Cyl 4.6 L GAS
- Mountaineer | 2002-2005 | Base, Convenience, Luxury, Premier | 8 Cyl 4.6 L GAS
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Mercury Thermostat Housing
Part Number: XF2Z-8592-AB
Product Specifications
- Other Name: Connection - Water Outlet; Thermostat Housing Cover
Fits the following Mercury Models:
- Sable | 1992-1995 | GS, LS, LTS | 6 Cyl 3.0 L GAS
- Topaz | 1992-1994 | GS, LTS, Sport, XR5 | 6 Cyl 3.0 L GAS
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Mercury Thermostat Housing
Part Number: F6DZ-8592-AA
Product Specifications
- Other Name: Connection - Water Outlet; Engine Coolant Thermostat Housing; Thermostat Housing Cover
Fits the following Mercury Models:
- Sable | 1996-2000 | G, GS, LS, LS Premium | 6 Cyl 3.0 L GAS
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Mercury Thermostat Housing
Part Number: F23Z8592AA
Product Specifications
- Other Name: Connection Water Outlet; Thermostat Housing Cover
Fits the following Mercury Models:
- Topaz | 1992-1994 | GS, LS, LTS, Sport | 4 Cyl 2.3 L GAS
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Mercury Thermostat Housing
Part Number: F4SZ-8592-A
Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Thermostat Housing; Engine Coolant Water Outlet; Thermostat Housing Cover; Outlet Assembly; Connection - Water Outlet; Water Outlet
Fits the following Mercury Models:
- Cougar | 1994-1995 | XR-7 | 8 Cyl 4.6 L GAS
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Mercury Thermostat Housing
Part Number: F4XZ-8592-BA
Product Specifications
- Other Name: Connection - Water Outlet; Thermostat Housing Cover
Fits the following Mercury Models:
- Villager | 1993-2002 | Base, Estate, GS, LS, Nautica, Sport | 6 Cyl 3.0 L GAS, 6 Cyl 3.3 L GAS
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Mercury Thermostat Housing
Part Number: F6ZZ-8592-C
Product Specifications
- Other Name: Connection - Water Outlet; Engine Coolant Thermostat Housing Cover; Thermostat Housing Cover; Outlet Assembly; Water Outlet
Fits the following Mercury Models:
- Cougar | 1996-1997 | XR-7 | 8 Cyl 4.6 L GAS
- Grand Marquis | 1999-2002 | GS, LS | 8 Cyl 4.6 L GAS
- Marauder | 2003-2004 | Base | 8 Cyl 4.6 L GAS
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Mercury Thermostat Housing
Part Number: F78Z-8592-BD
Product Specifications
- Other Name: Connection Water Outlet; Engine Coolant Water Outlet; Thermostat Housing Cover; Water Outlet
Fits the following Mercury Models:
- Monterey | 2004-2007 | Base, Convenience, Luxury, Premier | 6 Cyl 4.2 L GAS
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Mercury Thermostat Housing
Part Number: HS4Z-8A586-A
Product Specifications
- Other Name: Connection Water Outlet; Thermostat Housing Cover
- Replaces: F5RZ-8592-B, RH-43
Fits the following Mercury Models:
- Cougar | 1999 | Base | 4 Cyl 2.0 L GAS
- Mystique | 1995-1998 | Base, GS, GS Spree, LS | 4 Cyl 2.0 L GAS

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1-20 of 34 Results

Mercury Thermostat Housing Parts Questions & Experts Answers

Thermostat Housing, Lower
2M2Z-8592-CD
Q: How to Properly Address Issues with the Thermostat Housing on a 2.3L Engine in a Mercury Mariner?
A: A safe method to service the thermostat housing on a 2.3L engine begins with positioning the vehicle in NEUTRAL mode on a hoist. Start by draining the cooling system before you proceed to disconnect the accessory drive belt. Detach both hoses from the thermostat housing where they connect to the heater and lower portion of the radiator. Secure the thermostat housing by removing its three securing bolts and gasket. Follow up the new thermostat housing installation by tightening it to 10 Nm (89 lb-in). Inspection of the gasket will determine whether you need to install a new one. The cooling system requires completing with filling and bleeding.
Water Outlet, Upper
6L2Z-8592-FA
Q: How to service the thermostat housing on a 4.0L SOHC engine on Mercury Mountaineer?
A: Before servicing the 4.0L SOHC engine thermostat housing the operator must drain the engine cooling system. The service of a 4.0L SOHC engine requires you to disconnect the engine coolant temperature (ECT) sensor electrical connector followed by releasing the upper radiator hose clamp then disconnecting the heater hose. You should move the bypass hose clamp to the bottom section of the hose before you continue. First remove the bolts fastening the thermostat housing before extracting the housing. The bolts should be tightened to 12 Nm during the installation process (9 ft. lbs.). Assess the O-ring seal located in the thermostat housing and substitute it with a fresh one if required. Reverse all steps of removal and you will finish the installation process.
Thermostat Housing
F5RZ-8592-A
Q: How to service and repair the thermostat housing on Mercury Cougar?
A: Before performing repairs on the thermostat housing one must drain the cooling system contents. First remove all coolant hoses attached to the thermostat housing before disconnecting the engine coolant temperature sensor and temperature gauge sender electrical connectors. The next step involves disconnecting the thermostat housing coolant hose before removing the housing by unfastening all bolts from the housing and the screws. Discard the O-ring seal. The installation procedure requires following the steps from removal in reverse order with proper filling of the cooling system.