Mercedes-Benz GL450 Water Pump Replacement at your home or office.

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$507.17 - $1,058.83

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Water Pump Replacement Estimate for Mercedes-Benz GL450

Mercedes-Benz GL450 Water Pump Replacement costs $845 on average.

CarServiceEstimateShop/Dealer Price
2007 Mercedes-Benz GL450V8-4.7LService typeWater Pump ReplacementEstimate$1470.15Shop/Dealer Price$1806.45 - $2727.87
2016 Mercedes-Benz GL450V6-3.0L TurboService typeWater Pump ReplacementEstimate$970.34Shop/Dealer Price$1210.83 - $1745.78
2008 Mercedes-Benz GL450V8-4.7LService typeWater Pump ReplacementEstimate$1486.65Shop/Dealer Price$1820.77 - $2740.55
2015 Mercedes-Benz GL450V6-3.0L TurboService typeWater Pump ReplacementEstimate$970.34Shop/Dealer Price$1222.59 - $1766.36
2009 Mercedes-Benz GL450V8-4.7LService typeWater Pump ReplacementEstimate$1470.15Shop/Dealer Price$1802.61 - $2721.15
2014 Mercedes-Benz GL450V8-4.7L TurboService typeWater Pump ReplacementEstimate$1694.71Shop/Dealer Price$2060.83 - $3050.78
2013 Mercedes-Benz GL450V8-4.7L TurboService typeWater Pump ReplacementEstimate$1487.74Shop/Dealer Price$1830.65 - $2803.20
2011 Mercedes-Benz GL450V8-4.7LService typeWater Pump ReplacementEstimate$1470.15Shop/Dealer Price$1804.43 - $2724.33
Show example Mercedes-Benz GL450 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 Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating


YourMechanic Mercedes-Benz GL450 Service

Average Rating

4.9/5

Number of Reviews

177

Rating Summary
165
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165
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Luis

16 years of experience
62 reviews
Luis
16 years of experience
Mercedes-Benz GL450 - Water Pump - Kissimmee, Florida
Luis arrived early and immediately began working on my 2008 Mercedes GL450. He was very friendly and explained exactly what he was going to do to repair my vehicle. When Luis had completed the repair, he also went out of his way to fill my tire ( one was extremely low on air) with air. He also recommended a few scheduled maintenance issues and gave me a quote for those. I would recommend Luis to any of my friends and family. Fred Kissimmee, Fl

Travis

12 years of experience
139 reviews
Travis
12 years of experience
Mercedes-Benz GL450 - Ignition Coil Replacement - Charlotte, North Carolina
Travis was great!!! Not only did he come way before the time(appt. time was 1:30 he called and came @12). He was finished with my car in 15-20 min. Thanks Travis!!!

Milton

36 years of experience
239 reviews
Milton
36 years of experience
Mercedes-Benz GL450 - Oil Change - North Las Vegas, Nevada
It was a pleasure having Milton serviced our vehicle. He arrived earlier and got it done professionally. It was windy and raining but that did not stop him, thank you.

Jeffrey

24 years of experience
107 reviews
Jeffrey
24 years of experience
Mercedes-Benz GL450 - Serpentine/Drive Belt Replacement - Atlanta, Georgia
It was beyond expectations

Excellent Rating


YourMechanic Mercedes-Benz GL450 Service

Average Rating

4.9/5

Number of Reviews

177

Rating Summary
165
10
1
1
0
165
10
1
1
0
Number of Mercedes-Benz GL450 services completed
1947+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
900+
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