Mercedes-Benz S320 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

(19)

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

(19)

Water Pump Replacement Service

How much does a Water Pump Replacement cost?

On average, the cost for a Mercedes-Benz S320 Water Pump Replacement is $569 with $180 for parts and $389 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1997 Mercedes-Benz S320L6-3.2LService typeWater Pump ReplacementEstimate$835.46Shop/Dealer Price$998.22 - $1325.04
1995 Mercedes-Benz S320L6-3.2LService typeWater Pump ReplacementEstimate$749.16Shop/Dealer Price$910.97 - $1234.66
1996 Mercedes-Benz S320L6-3.2LService typeWater Pump ReplacementEstimate$749.16Shop/Dealer Price$910.96 - $1234.64
1994 Mercedes-Benz S320L6-3.2LService typeWater Pump ReplacementEstimate$777.66Shop/Dealer Price$944.54 - $1272.04
1998 Mercedes-Benz S320L6-3.2LService typeWater Pump ReplacementEstimate$1004.86Shop/Dealer Price$1230.70 - $1746.24
1999 Mercedes-Benz S320L6-3.2LService typeWater Pump ReplacementEstimate$1004.86Shop/Dealer Price$1230.59 - $1746.04
Show example Mercedes-Benz S320 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 Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(19)

Rating Summary
17
0
0
2
0
17
0
0
2
0

Attila

19 years of experience
884 reviews
Attila
19 years of experience
Mercedes-Benz S320 L6-3.2L - Coolant is leaking - Florham Park, New Jersey
Always professional and honest

Amor

43 years of experience
181 reviews
Amor
43 years of experience
Mercedes-Benz S320 L6-3.2L - Heater Blower Motor Resistor - Tracy, California

John

27 years of experience
1004 reviews
John
27 years of experience
Mercedes-Benz S320 L6-3.2L - Crankshaft Harmonic Balancer Replacement - La Marque, Texas
As usual, John's work was stellar! He was punctual, took great care of my classic vehicle, and I'm back on the road! Thanks John for being an honest, hard-working mechanic that people can genuinely TRUST.

Noni

22 years of experience
19 reviews
Noni
22 years of experience
Mercedes-Benz S320 L6-3.2L - Car is overheating - Forest Hills, New York
From all my experiences with mechanics, Nonis transparency is unmatched. He patiently diagnosed the vehicle and found the direct issue. I would definitely use his services in the future.

Excellent Rating

(19)

Rating Summary
17
0
0
2
0
17
0
0
2
0
Number of Mercedes-Benz S320 services completed
209+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1000+
experts on our platform

Recent articles & questions

How to Drain Your Fuel Tank
The The majority of cars on the road today use internal combustion engines that use gasoline or diesel as fuel, and they store this fuel in a gas tank. Most gas tanks are located on the undersides of the vehicle...
Windshield Laws in Idaho
If If you drive a vehicle in Idaho, there are many different rules of the road that you have to follow to stay legal and safe. However, you are also required to make sure that your windshield is in compliance...
How to Replace a Driveshaft Center Support Bearing
The center support bearing for the driveshaft is simple in design and function. It can be difficult to replace due to the driveshaft's complex build.

Rain getting into car

I would need a little more information for a proper diagnosis, such as the location where the water is entering the vehicle, and whether or not your car has a sunroof. If you have a sunroof, the most common leak...

85 chevy s10 dash electrical problems gauges all drop when dash lights are on

Definitely check that the stereo was installed properly. If you can't find a wiring diagram online, try a local stereo installer. They might be able to help you out. GM products, particularly in the 80's, were prone to gauge issues....

I'm curious how long the vacuum pump replacement will take on my VW Beetle

I will not get into the "misinformation" aspect but the engine most certainly does not have to be removed to replace the vacuum pump (https://www.yourmechanic.com/services/brake-vacuum-pump-replacement) in a Beetle or any other VW product with the same 2.5 ltr 5 cylinder....

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