Mercury Mariner Water Pump Replacement at your home or office.

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Water Pump Replacement Estimate for Mercury Mariner

Mercury Mariner Water Pump Replacement costs $285 on average.

CarServiceEstimateShop/Dealer Price
2008 Mercury MarinerL4-2.3LService typeWater Pump ReplacementEstimate$343.95Shop/Dealer Price$416.08 - $601.78
2006 Mercury MarinerV6-3.0LService typeWater Pump ReplacementEstimate$533.47Shop/Dealer Price$647.14 - $915.48
2007 Mercury MarinerL4-2.3LService typeWater Pump ReplacementEstimate$345.95Shop/Dealer Price$421.82 - $610.33
2005 Mercury MarinerV6-3.0LService typeWater Pump ReplacementEstimate$533.47Shop/Dealer Price$647.08 - $915.37
2011 Mercury MarinerL4-2.5LService typeWater Pump ReplacementEstimate$313.23Shop/Dealer Price$383.22 - $562.40
2010 Mercury MarinerL4-2.5LService typeWater Pump ReplacementEstimate$321.95Shop/Dealer Price$394.10 - $579.81
2006 Mercury MarinerL4-2.3L HybridService typeWater Pump ReplacementEstimate$352.95Shop/Dealer Price$428.63 - $617.00
2008 Mercury MarinerV6-3.0LService typeWater Pump ReplacementEstimate$568.26Shop/Dealer Price$694.86 - $1023.40
Show example Mercury Mariner Water Pump Replacement prices

Water Pump Replacement Service

What is a water pump and how does it work?

The water pump is a belt or chain-driven engine accessory bolted to the engine above the crankshaft pulley. The pump housing has an impeller that circulates engine coolant through the cooling system passageways in the engine block and cylinder head, on to the radiator, where the coolant temperature is reduced. . The lower temperature coolant then flows back to the water inlet on the engine and the water pump continues the cycle.

When to consider replacing the water pump:

  • Coolant leaks or overheating. The water pump impeller shaft is supported by a bearing. Eventually, the bearing or seal can wear and leak or damage the impeller. Many water pumps have weep holes near the pump bearing. If you see significant leakage from that weep hole, it is time to replace the pump.
  • Bearing roughness or noise. If the water pump shaft does not turn smoothly or the pump is noisy, the bearing is excessively worn. Pump replacement will be necessary.
  • Timing belt replacement. In engines where the water pump is driven by the timing belt, it is a good idea to replace the water pump at the same time the timing belt is replaced. The extensive work explains why it is always recommended to replace the water pump whenever the mechanic already has these components removed for regularly scheduled timing belt replacement.

How do mechanics replace the water pump?

  • The water pump is usually bolted to the front of the engine. The replacement procedure will vary depending on whether the pump is driven by the timing belt, the serpentine belt, or chain.
  • On a cold engine, the engine coolant is drained to a level below the water pump.
  • Components that require removing to access the water pump are removed, including the belt or chain that directly drive the pump.
  • The bolts holding the pump to the engine are removed and the pump is pulled out.
  • The gasket surface must be cleaned and the pump mounting surface inspected. A new gasket, rubber seal, or RTV sealant, as required, is installed and then the new pump. The bolts are torqued in sequence using a calibrated inch pound torque wrench.
  • For applications where the water pump is driven by the timing belt, the timing belt must be removed. Typically, this requires removal of the crankshaft pulley, timing belt covers, and timing belt tensioner. Once the new pump is installed, new coolant is added back while bleeding the cooling system of any air. The engine is then run and brought to normal operating temperature to check for leaks and ensure normal operating temperature.

Is it safe to drive with a water pump problem?

No. Should the water pump only leak a little bit, you can drive the car. However, a small leak could suddenly enlarge or the pump bearing might unexpectedly seize. Either circumstance would likely cause engine overheating. If a defective water pump causes the overheating, it is not safe to drive because of the damage to the engine.

When replacing the water pump keep in mind:

  • It is best to install a new cooling system thermostat when you install a new water pump, especially if the thermostat is old or original.
  • Completely flushing the cooling system is a good idea when you replace the water pump. Flushing can be done before or after pump replacement.
  • The rest of the cooling system should be inspected too — particularly rubber hoses, which have a limited lifetime.

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Meet some of our expert Mercury mechanics

Real customer reviews from Mercury owners like you.

Excellent Rating

(156)

Rating Summary
147
7
1
0
1
147
7
1
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1

Joshua

27 years of experience
709 reviews
Joshua
27 years of experience
Mercury Mariner V6-3.0L - Oil Change - El Cerrito, California
Excellent service.

Michael

25 years of experience
199 reviews
Michael
25 years of experience
Mercury Mariner L4-2.3L - Brake Hose Replacement (Driver Side Front, Passenger Side Front) - Charlotte, North Carolina
Without a doubt Michael is the best mechanic in Charlotte!!! He showed up an Hour early for my appointment because he knew everything I was going through was last minute and wanted to get to me as soon as possible!! My car was stranded at a friend's house and was not there when he arrived but he basically completed my service by the time I had arrived (still 40 minutes before my scheduled time) and was nice enough to look at my friends car while he was waiting on my keys to finish up with my appointment!! My friend needed almost 3 bottles of transmission fluid because it was so empty and Michael happily filled his transmission with fluid he had on him...Free of charge!! And diagnosed my friends car with his recommendations for that as well. Honestly can not say how how I am Michael is my Only mechanic!! He is probably the nicest guy ever, comes Fully equipped with everything possibly needed for mechanics, is extremely informative, best person I have met at timeliness, and is 100% trustworthy!!! If you have the luxury or getting Michael consider yourself lucky!!! Great great great guy!!!!

Abdul

11 years of experience
419 reviews
Abdul
11 years of experience
Mercury Mariner V6-3.0L - Serpentine/Drive Belt - Atlanta, Georgia
Abdul showed up on time ( actually before time) . He finished his work very fast , was professional and cleaned up all the new mess as well as the mess i already made . I highly recommend his fast, economically afordable and professional services . Thank you Abdul.

Tyrone

11 years of experience
423 reviews
Tyrone
11 years of experience
Mercury Mariner L4-2.3L Hybrid - Axle / CV Shaft Assembly Replacement (Driver Side Front, Passenger Side Front) - Alexandria, Virginia
Excellent - would use again.

Excellent Rating

(156)

Rating Summary
147
7
1
0
1
147
7
1
0
1
Number of Mercury Mariner services completed
1716+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercury MECHANICS
600+
experts on our platform

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