Mercury Mariner Water Pump Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(178)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(178)

Water Pump Replacement Service

How much does a Water Pump Replacement cost?

On average, the cost for a Mercury Mariner Water Pump Replacement is $289 with $135 for parts and $154 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2005 Mercury MarinerV6-3.0LService typeWater Pump ReplacementEstimate$744.32Shop/Dealer Price$839.01 - $1102.02
2009 Mercury MarinerL4-2.5L HybridService typeWater Pump ReplacementEstimate$431.09Shop/Dealer Price$500.73 - $705.12
2008 Mercury MarinerL4-2.3L HybridService typeWater Pump ReplacementEstimate$431.09Shop/Dealer Price$500.76 - $705.17
2007 Mercury MarinerL4-2.3L HybridService typeWater Pump ReplacementEstimate$474.89Shop/Dealer Price$545.11 - $749.94
2006 Mercury MarinerL4-2.3L HybridService typeWater Pump ReplacementEstimate$474.89Shop/Dealer Price$547.17 - $753.55
2005 Mercury MarinerL4-2.3LService typeWater Pump ReplacementEstimate$474.89Shop/Dealer Price$545.31 - $750.28
2010 Mercury MarinerL4-2.5L HybridService typeWater Pump ReplacementEstimate$431.09Shop/Dealer Price$500.77 - $705.20
2010 Mercury MarinerV6-3.0LService typeWater Pump ReplacementEstimate$632.30Shop/Dealer Price$728.03 - $1007.67
Show example Mercury Mariner Water Pump Replacement prices

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.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercury mechanics

Real customer reviews from Mercury owners like you.

Excellent Rating

(178)

Rating Summary
168
7
1
0
2
168
7
1
0
2

Aldo

13 years of experience
34 reviews
Aldo
13 years of experience
Mercury Mariner V6-3.0L - Pre-purchase Car Inspection - Tucson, Arizona
He just saved me from making a 9,000 dollar mistake. I'm very happy.

Lee

39 years of experience
294 reviews
Lee
39 years of experience
Mercury Mariner V6-3.0L - Car is shaking or vibrating - Oklahoma City, Oklahoma
Lee's service was great, he took the time to really listen to what problem I was having, troublshot it efficiently and quickly serviced our vehicle. I know his years of service and dedication to his craft saved me money and time. We are customers for the future.

Victor

12 years of experience
211 reviews
Victor
12 years of experience
Mercury Mariner V6-3.0L - Spark Plug Replacement - Virginia Beach, Virginia
Very professional, punctual, explained any issues. Will definitely use him again!

Jeremy

21 years of experience
802 reviews
Jeremy
21 years of experience
Mercury Mariner V6-3.0L - Alternator - Boynton Beach, Florida
He is a very nice person And very honest Does wonderful work I will use him over and over again

Excellent Rating

(178)

Rating Summary
168
7
1
0
2
168
7
1
0
2
Number of Mercury Mariner services completed
1958+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercury MECHANICS
600+
experts on our platform

Recent articles & questions

How to Handle Out-of-Town Breakdowns
It's hard to know what to do when your car breaks down. If your car breaks down out of town, safely pull off the road and call for help.
How Does an Engine Idle High and Low?
A common problem that car owners experience is high or low engine idle. A damaged intake gasket, cold air intake, or PCV valve can cause idle issues.
How to Register Your Car
Vehicle registration is an important part of owning and buying a car. The process to register your car varies by state but luckily it's an easy task.

My car is clunking under passenger side with acceleration. Car pulls to the right steering wheel moves like a clock ticks

These sound like the symptoms of a loose front wheel. Don't drive the car anymore until you have checked the lug nuts. (https://www.yourmechanic.com/article/how-to-tighten-lug-nuts-by-john-hege) If they are loose, and you have been driving like that for a while, there may be...

Throttle body re-learn

As you may know, after cleaning or replacing the throttle body your car needs to go through a "re-learning" process to bring the idle back down. Try doing the following which should bring the idle back down to a normal...

I own a 2010 nissan 370z nismo and i just put in a new moto and i was wondering if i have to reprogram my ecu and cams since my care has codes being thrown when all the sensors are new and it wont go passed 2500rpm

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com