How to service and repair the water pump on Mercury Cougar?

The water pump servicing process starts with draining the cooling system. The first step is to loosen the water pump pulley bolts along with the removal of the accessory drive belt. Follow this step with the removal of water pump bolts before elevating and supporting the vehicle to reach the water pump. Installation of a new water pump requires following the opposite steps of removal and finally completing the cooling system with fluid.

How to service the water pump on a 2.5L engine on Mercury Mariner?

The coolant pump servicing for a 2.5L engine starts by placing the vehicle on a solution hoist where its transmission is in neutral. The first step requires you to drain the cooling system while removing the accessory drive belt. Chose the three bolts holding the coolant pump pulley during removal then fasten the new pulley with a torque of 20 Nm (177 lb-in). Affix the coolant pump correctly to the engine block before fastener tightening to avoid damage then remove the three bolts and coolant pump while discarding the O-ring seal. Apply clean engine coolant on the new O-ring seal until it is properly lubricated before tightening it to a torque of 10 Nm (89 lb-in). The reverse treatment of removal steps should include filling the cooling system while also bleeding it.

OEM Mercury Water Pump

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45 Water Pumps found

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Mercury Water Pump Part Number: F7TZ-8501-AC
$84.07 MSRP: $135.64
You Save: $51.57 (39%)
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
- Replaces: F5TZ-8501-C, F7TZ-8501-AB, PW-349
Fits the following Mercury Models:
- Mountaineer | 1997-2001 | Base | 8 Cyl 5.0 L GAS
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Mercury Water Pump Part Number: 6L2Z-8501-A
$108.18 MSRP: $178.00
You Save: $69.82 (40%)
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
- Replaced by: 6L2Z-8501-C
Fits the following Mercury Models:
- Mountaineer | 1998-2010 | Base, Convenience, Luxury, Premier | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS
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Mercury Water Pump Part Number: 5F1Z-8501-A
$68.95 MSRP: $113.45
You Save: $44.50 (40%)
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
- Replaces: 1F1Z-8501-AA, PW-404, XF1Z-8501-AA
Fits the following Mercury Models:
- Sable | 1995-2005 | G, GS, LS, LS Premium, LTS, Platinum Edition | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
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Mercury Water Pump Part Number: 4S4Z-8501-E
$49.92 MSRP: $79.27
You Save: $29.35 (38%)
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
- Replaces: 6M8Z-8501-AC, PW-447, 1S7Z-8501-AK, 4S4Z-8501-AA, 4S4Z-8501-D, PW-465
Fits the following Mercury Models:
- Mariner | 2005-2011 | Base, Convenience, 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
- 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 Water Pump Part Number: 3L3Z-8501-CA
$51.84 MSRP: $83.64
You Save: $31.80 (39%)
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
- Manufacturer Note: With M30 Hub
- Replaced by: 5L3Z-8501-AC
- Replaces: 5R3Z-8501-A, 5L2Z-8501-A, 1L2Z-8501-BB, F7UZ-8501-CA, F8AZ-8501-AA, PW-470, PW-387, YW7Z-8501-AA, AR3Z-8501-A, F4AZ-8501-A, AL3Z-8501-B, PW-499, YR3Z-8501-AB, YC2Z-8501-BA, PW-466, XC2Z-8501-BA
Fits the following Mercury Models:
- Cougar | 1994-1997 | XR-7 | 8 Cyl 4.6 L GAS
- Grand Marquis | 1992-2000 | GS, LS | 8 Cyl 4.6 L GAS
- Mountaineer | 2002-2010 | Base, Convenience, Luxury, Premier | 8 Cyl 4.6 L GAS
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Mercury Water Pump Part Number: EU2Z-8501-D
$135.24 MSRP: $218.18
You Save: $82.94 (39%)
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
- Replaces: 3M4Z-8501-BG, 5M8Z-8501-A, 3M4Z-8501-BJ, 5M8Z-8501-B, PW-481, PW-437, PW-440
Fits the following Mercury Models:
- Mariner | 2007-2008 | Base, Luxury, Premier | 6 Cyl 3.0 L GAS
- Milan | 2006-2009 | Base, Premier | 6 Cyl 3.0 L GAS
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Mercury Water Pump Part Number: 9E5Z-8C419-B
$204.30 MSRP: $327.27
You Save: $122.97 (38%)
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Product Specifications
- Other Name: Pump Assembly; Drive Motor Inverter Cooler Water Pump; Electric Water Pump; Engine Water Pump; Auxiliary Pump
- Replaces: 9E5Z-8C419-A
Fits the following Mercury Models:
- Milan | 2010-2011 | Hybrid | 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV)
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Mercury Water Pump Part Number: 9M6Z-8C419-A
$166.03 MSRP: $263.64
You Save: $97.61 (38%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump Assembly; Engine Auxiliary Water Pump; Electric Water Pump; Engine Water Pump; Auxiliary Pump
Fits the following Mercury Models:
- Mariner | 2009-2011 | Hybrid | 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV)
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Mercury Water Pump Part Number: AA5Z-8501-D
$99.40 MSRP: $160.36
You Save: $60.96 (39%)
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump Assembly; Engine Water Pump; Water Pump Assembly
- Replaced by: AA5Z-8501-F
- Replaces: 7T4Z-8501-D, AA5Z-8501-A, 7T4Z-8501-C, PW-495, PW-489, PW-498
Fits the following Mercury Models:
- Sable | 2008-2009 | Base, Premier | 6 Cyl 3.5 L GAS
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Mercury Water Pump Part Number: F5DZ-8501-CL
$60.89 MSRP: $84.23
You Save: $23.34 (28%)
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
- Replaces: F7DZ-8501-A
Fits the following Mercury Models:
- Sable | 1996-2000 | G, GS, LS, LS Premium | 6 Cyl 3.0 L GAS
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Mercury Water Pump Part Number: 3R3Z-8501-A
$72.89 MSRP: $122.36
You Save: $49.47 (41%)
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
- Replaces: 4U7Z-8501-A, 4U7Z-8501-B, 3R3Z-8501-BB
Fits the following Mercury Models:
- Cougar | 1996-1997 | XR-7 | 6 Cyl 3.8 L GAS, 8 Cyl 4.6 L GAS
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Mercury Water Pump Part Number: 5M6Z-8501-A
$197.95 MSRP: $336.36
You Save: $138.41 (42%)
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Product Specifications
- Other Name: Kit - Water Pump Repair; Auxiliary Pump
- Replaces: 6M6Z-8C419-A, 5M6Z-8C419-A
Fits the following Mercury Models:
- Mariner | 2005-2008 | Base, Hybrid, Premier | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS
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Mercury Water Pump Part Number: EU2Z-8501-F
$237.22 MSRP: $380.00
You Save: $142.78 (38%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump Assembly; Water Pump Assembly
- Replaces: EU2Z-8501-A
Fits the following Mercury Models:
- Montego | 2005-2007 | Luxury, Premier | 6 Cyl 3.0 L GAS
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Mercury Water Pump Part Number: F7CZ-8501-AB
$58.49 MSRP: $80.92
You Save: $22.43 (28%)
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
- Manufacturer Note: SOHC
Fits the following Mercury Models:
- Tracer | 1997-1999 | GS, LS, Trio | 4 Cyl 2.0 L GAS
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Mercury Water Pump Part Number: XF5Z-8501-BA
$22.91 MSRP: $31.69
You Save: $8.78 (28%)
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
Fits the following Mercury Models:
- Villager | 1999-2002 | Base, Estate, Sport | 6 Cyl 3.3 L GAS
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Mercury Water Pump Part Number: F4DZ-8501-A
$23.34 MSRP: $32.29
You Save: $8.95 (28%)
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
Fits the following Mercury Models:
- Sable | 1994-1995 | GS, LS | 6 Cyl 3.8 L GAS
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Mercury Water Pump Part Number: F4PZ-8501-A
$10.42 MSRP: $14.42
You Save: $4.00 (28%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
Fits the following Mercury Models:
- Sable | 1986-1995 | GS, LS, LTS | 6 Cyl 3.0 L GAS
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Mercury Water Pump Part Number: F5RZ-8501-B
$34.38 MSRP: $47.56
You Save: $13.18 (28%)
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
Fits the following Mercury Models:
- Mystique | 1995-1997 | Base, GS, GS Spree, LS | 4 Cyl 2.0 L GAS
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Mercury Water Pump Part Number: 6U2Z-8501-D
$57.82 MSRP: $91.82
You Save: $34.00 (38%)
Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
- Replaces: F8RZ-8501-NE, F8RZ-8501-EN
Fits the following Mercury Models:
- Cougar | 1999-2002 | Base | 4 Cyl 2.0 L GAS
- Mystique | 1998-2000 | GS | 4 Cyl 2.0 L GAS
- Tracer | 1998-1999 | GS, LS, Trio | 4 Cyl 2.0 L GAS
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Mercury Water Pump Part Number: F33Z-8501-A
Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
Fits the following Mercury Models:
- Topaz | 1992-1994 | GS, LS, LTS, Sport | 4 Cyl 2.3 L GAS

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Mercury Water Pump

If you own Mercury and want to keep it in top shape, choosing OEM Water Pump is a smart move. They are precisely engineered and follow strict factory standards. They are made in advanced facilities that use cutting edge technology. Each part goes through thorough testing to confirm strength and safety, so you can trust it. FordPartsDeal.com gives you genuine Mercury Water Pump at some of the affordable online prices without cutting quality. Every OEM Mercury part includes the manufacturer's warranty, easy returns, and super-fast delivery. So why wait? Shop now and get your vehicle back to peak condition.

Mercury Water Pump Parts and Q&A

Water Pump
6U2Z-8501-D
Q: How to service and repair the water pump on Mercury Cougar?
A:
The water pump servicing process starts with draining the cooling system. The first step is to loosen the water pump pulley bolts along with the removal of the accessory drive belt. Follow this step with the removal of water pump bolts before elevating and supporting the vehicle to reach the water pump. Installation of a new water pump requires following the opposite steps of removal and finally completing the cooling system with fluid.
Water Pump
4S4Z-8501-E
Q: How to service the water pump on a 2.5L engine on Mercury Mariner?
A:
The coolant pump servicing for a 2.5L engine starts by placing the vehicle on a solution hoist where its transmission is in neutral. The first step requires you to drain the cooling system while removing the accessory drive belt. Chose the three bolts holding the coolant pump pulley during removal then fasten the new pulley with a torque of 20 Nm (177 lb-in). Affix the coolant pump correctly to the engine block before fastener tightening to avoid damage then remove the three bolts and coolant pump while discarding the O-ring seal. Apply clean engine coolant on the new O-ring seal until it is properly lubricated before tightening it to a torque of 10 Nm (89 lb-in). The reverse treatment of removal steps should include filling the cooling system while also bleeding it.