How to service the thermostat for the 4.6L (4V) engine on Mercury Marauder?

Service of the 4.6L (4V) engine thermostat begins with draining the coolant system. Service of the 4.6L (4V) engine thermostat begins with vehicle elevation and support. Disconnect the coolant hose before moving forward. You should first remove the coolant outlet bolts to extract the thermostat accessory together with its O-ring seal. Evaluate the O-ring seal before installing a fresh one when needed. It is essential to discard hose clamps because the replacement should include worm-style clamps that are correctly sized instead of constant tension clamps. The installation ends by following all the steps in reverse order.

How to ensure proper functioning of the thermostat in a Mercury Grand Marquis?

The service procedure for the thermostat starts with draining coolant under the water thermostat position. First eliminate the engine appearance cover and then extract the bolts and water outlet adapter as well as hose before placing them out of the work area. Begin by removing the water thermostat along with its O-ring seal from the intake manifold after which inspect the O-ring and replace it with a new one if necessary. Reinstall the components by performing the opposite steps of removal.

How to service the thermostat on Mercury Cougar?

Service of the thermostat starts with draining the cooling system followed by disconnecting the thermostat hoses. First remove the thermostat cover by removing its three bolts until the cover detaches. Following the next step you should remove the thermostat along with its O-ring seal for removal. Installation of the unit requires the reverse steps of removing the new O-ring seal followed by cooling system refilling.

OEM Mercury Thermostat

Engine Coolant Thermostat

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21 Thermostats found

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Mercury Thermostat
Part Number: YU3Z-8575-AA
$32.17 MSRP: $51.09
You Save: $18.92 (38%)
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Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat; Thermostat Insert Fo
- Replaces: F7TZ-8575-A
Fits the following Mercury Models:
- Mountaineer | 1998-2001 | Base | 6 Cyl 4.0 L GAS
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Mercury Thermostat
Part Number: 7L3Z-8575-E
$20.68 MSRP: $32.00
You Save: $11.32 (36%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat; Thermostat, Coolant
- Replaces: 7L3Z-8575-D, 7L3Z-8575-B, AL3Z-8575-B, RT-1196, RT-1230, 3L3Z-8575-AA, 3L3Z-8575-AC, 7L3Z-8575-C, AL3Z-8575-A, RT-1204, RT-1234, RT-1178, RT-1229, RT-1165
Fits the following Mercury Models:
- Cougar | 1994-1997 | XR-7 | 8 Cyl 4.6 L GAS
- Grand Marquis | 1992-2011 | GS, GSL, Limited Edition, LS, LSE, Ultimate Edition | 8 Cyl 4.6 L FLEX, 8 Cyl 4.6 L GAS
- Marauder | 2003-2004 | Base | 8 Cyl 4.6 L GAS
- Mountaineer | 2002-2010 | Base, Convenience, Luxury, Premier | 8 Cyl 4.6 L GAS
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Mercury Thermostat
Part Number: 2L2Z-8575-AA
$19.85 MSRP: $31.53
You Save: $11.68 (38%)
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Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
- Replaces: 1L2Z-8575-AA
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
Part Number: F5OY-8575-A
$12.85 MSRP: $20.40
You Save: $7.55 (38%)
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Product Specifications
- Other Name: Thermostat Assembly
Fits the following Mercury Models:
- Marauder | 2003-2004 | Base | 8 Cyl 4.6 L GAS
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Mercury Thermostat Housing
Part Number: 3M4Z-8575-B
$32.93 MSRP: $52.29
You Save: $19.36 (38%)
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Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat Kit; Thermostat Housing Cover; Thermostat Integral; Thermostat, Coolant; Thermostat Unit; Thermostat; Engine Coolant Thermostat
- Replaces: 3M4Z-8575-A, 3M4Z-8575-AB
Fits the following Mercury Models:
- Mariner | 2006-2011 | Base, Hybrid, Premier | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L GAS
- Milan | 2006-2011 | Base, Hybrid, Premier | 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L GAS
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Mercury Thermostat Unit
Part Number: 4L5Z-8575-B
$44.03 MSRP: $69.91
You Save: $25.88 (38%)
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Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat; Thermostat Integral; Thermostat
- Replaces: 4L5Z-8575-A, 4L5Z-8575-AA, 4L5Z-8575-AD
Fits the following Mercury Models:
- Mariner | 2008, 2005-2006 | Base, Convenience, Hybrid | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS
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Mercury Thermostat
Part Number: F8RZ-8575-CA
$12.15 MSRP: $19.29
You Save: $7.14 (38%)
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Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
- Replaces: F5RZ-8575-A, F8RZ-8575-AA
Fits the following Mercury Models:
- Cougar | 1999-2002 | Base | 4 Cyl 2.0 L GAS
- Mystique | 1995-2000 | Base, GS, GS Spree, LS | 4 Cyl 2.0 L GAS
- Tracer | 1998-1999 | GS, LS, Trio | 4 Cyl 2.0 L GAS
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Mercury Thermostat
Part Number: 5F9Z-8575-A
$33.00 MSRP: $52.40
You Save: $19.40 (38%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
- Replaces: 5F9Z-8575-AA, RT-1182
Fits the following Mercury Models:
- Montego | 2005-2007 | Luxury, Premier | 6 Cyl 3.0 L GAS
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Mercury Thermostat
Part Number: F5RZ-8575-B
$5.64 MSRP: $8.22
You Save: $2.58 (32%)
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Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
- Manufacturer Note: 24V
Fits the following Mercury Models:
- Mystique | 1995-1997 | Base, GS, GS Spree, LS, LS Young America | 6 Cyl 2.5 L GAS
- Sable | 1996-2000 | G, GS, LS, LS Premium | 6 Cyl 3.0 L GAS
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Mercury Thermostat
Part Number: XF5Z-8575-AA
$9.64 MSRP: $13.34
You Save: $3.70 (28%)
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Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat; Thermostat, Coolant
- Manufacturer Note: Thermostat , #XF52 8575,AA
- Replaces: F7XY-8575-AA
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
Part Number: KU2Z-8575-A
$7.93 MSRP: $10.79
You Save: $2.86 (27%)
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Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
- Replaces: F8CZ-8575-AA, F6TZ-8575-AC, YS4Z-8575-AA
Fits the following Mercury Models:
- Topaz | 1992-1994 | GS, LS, LTS, Sport | 4 Cyl 2.3 L GAS
- Tracer | 1991-1999 | Base, GS, LS, Trio | 4 Cyl 1.9 L GAS, 4 Cyl 2.0 L GAS
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Mercury Thermostat
Part Number: XR3Z-8575-BA
$7.31 MSRP: $11.31
You Save: $4.00 (36%)
Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
- Manufacturer Note: Thermostat 192 #XR3E 8597-BA
- Replaces: F88Z-8575-AA, E8TZ-8575-A, XL2Z-8575-AB
Fits the following Mercury Models:
- Colony Park | 1987-1991 | GS, LS | 8 Cyl 5.0 L GAS
- Cougar | 1992-1993 | LS, XR-7 | 8 Cyl 5.0 L GAS
- Grand Marquis | 1986-1991 | Base, Colony Park, GS, LS | 8 Cyl 5.0 L GAS, 8 Cyl 5.8 L GAS
- Monterey | 2004-2007 | Base, Convenience, Luxury, Premier | 6 Cyl 4.2 L GAS
- Mountaineer | 1997-1998 | Base | 8 Cyl 5.0 L GAS
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Mercury Thermostat
Part Number: YF1Z-8575-BA
$9.94 MSRP: $15.38
You Save: $5.44 (36%)
Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
- Replaces: F58Z-8575-A, F5DZ-8575-A
Fits the following Mercury Models:
- Cougar | 1992-1995 | LS, XR-7 | 6 Cyl 3.8 L GAS
- Sable | 2000-2005, 1992-1995 | GS, LS, LS Premium, LTS, Platinum Edition | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS, 6 Cyl 3.8 L GAS
- Topaz | 1992-1994 | GS, LTS, Sport, XR5 | 6 Cyl 3.0 L GAS
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Mercury Thermostat
Part Number: F8RZ-8575-BA
$4.92 MSRP: $6.98
You Save: $2.06 (30%)
Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
Fits the following Mercury Models:
- Cougar | 1999-2002 | Base, S, V6 | 6 Cyl 2.5 L GAS
- Mystique | 1998-2000 | LS | 6 Cyl 2.5 L GAS
- Sable | 2001-2005 | LS, LS Premium, Platinum Edition | 6 Cyl 3.0 L GAS
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Mercury Thermostat
Part Number: 1X4Z-8575-B
$15.63 MSRP: $24.18
You Save: $8.55 (36%)
Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
- Replaces: 1X4Z-8575-A, 1X4Z-8575-FA, RT-1228, RT-1172
Fits the following Mercury Models:
- Sable | 2008-2009 | Base, Premier | 6 Cyl 3.5 L GAS
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Mercury Thermostat
Part Number: E73Z8575A
Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
Fits the following Mercury Models:
- Topaz | 1984-1987 | Base, GS, GS AWD, LS, LS AWD, Sport, Sport AWD, XR5 | 4 Cyl 2.3 L GAS
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Mercury Thermostat
Part Number: F1CZ-8575-A
Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
Fits the following Mercury Models:
- Tracer | 1988-1989 | Base | 4 Cyl 1.6 L GAS
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Mercury Thermostat
Part Number: F1CZ-8575-C
Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
Fits the following Mercury Models:
- Tracer | 1991-1996 | LTS | 4 Cyl 1.8 L GAS
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Mercury Valve Cover Gasket
Part Number: E6DZ8575B
Product Specifications
- Other Name: Thermostat; Engine Coolant Thermostat; Exhaust Valve Seals; Intake Valve Seals
Fits the following Mercury Models:
- Sable | 1986-1991 | GS, LS | 6 Cyl 3.0 L GAS
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Mercury Thermostat
Part Number: KU2Z-8575-B
Product Specifications
- Other Name: Thermostat Assembly; Engine Coolant Thermostat
- Replaces: F6DZ-8575-AA, F6ZZ-8575-A, F8DZ-8575-AA
Fits the following Mercury Models:
- Cougar | 1996-1997 | XR-7 | 6 Cyl 3.8 L GAS
- Sable | 1996-1999 | G, GS, LS, LS Premium | 6 Cyl 3.0 L GAS

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Mercury Thermostat Parts Questions & Experts Answers

Thermostat
F5OY-8575-A
Q: How to service the thermostat for the 4.6L (4V) engine on Mercury Marauder?
A: Service of the 4.6L (4V) engine thermostat begins with draining the coolant system. Service of the 4.6L (4V) engine thermostat begins with vehicle elevation and support. Disconnect the coolant hose before moving forward. You should first remove the coolant outlet bolts to extract the thermostat accessory together with its O-ring seal. Evaluate the O-ring seal before installing a fresh one when needed. It is essential to discard hose clamps because the replacement should include worm-style clamps that are correctly sized instead of constant tension clamps. The installation ends by following all the steps in reverse order.
Thermostat
7L3Z-8575-E
Q: How to ensure proper functioning of the thermostat in a Mercury Grand Marquis?
A: The service procedure for the thermostat starts with draining coolant under the water thermostat position. First eliminate the engine appearance cover and then extract the bolts and water outlet adapter as well as hose before placing them out of the work area. Begin by removing the water thermostat along with its O-ring seal from the intake manifold after which inspect the O-ring and replace it with a new one if necessary. Reinstall the components by performing the opposite steps of removal.
Thermostat
F8RZ-8575-BA
Q: How to service the thermostat on Mercury Cougar?
A: Service of the thermostat starts with draining the cooling system followed by disconnecting the thermostat hoses. First remove the thermostat cover by removing its three bolts until the cover detaches. Following the next step you should remove the thermostat along with its O-ring seal for removal. Installation of the unit requires the reverse steps of removing the new O-ring seal followed by cooling system refilling.