Mercedes-Benz ML430 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

(29)

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

(29)

Water Pump Replacement Service

How much does a Water Pump Replacement cost?

On average, the cost for a Mercedes-Benz ML430 Water Pump Replacement is $592 with $231 for parts and $361 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2000 Mercedes-Benz ML430V8-4.3LService typeWater Pump ReplacementEstimate$1082.52Shop/Dealer Price$1310.42 - $1844.48
1999 Mercedes-Benz ML430V8-4.3LService typeWater Pump ReplacementEstimate$1006.52Shop/Dealer Price$1234.54 - $1768.68
2001 Mercedes-Benz ML430V8-4.3LService typeWater Pump ReplacementEstimate$823.32Shop/Dealer Price$1005.53 - $1402.26
Show example Mercedes-Benz ML430 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

(29)

Rating Summary
29
0
0
0
0
29
0
0
0
0

Richard

35 years of experience
8 reviews
Richard
35 years of experience
ML430 2000 - Water Pump - Tampa, FL
Took his time check the work. He did a great job

Collins

8 years of experience
362 reviews
Collins
8 years of experience
ML430 1999 - Ignition Coil - Kennesaw, GA
COLLINS was very knowledgeable and worked hard on fixing my car which is now running GREAT!!! I have more work I need to book with YourMechanic and I would like to request COLLINS for all duture work!!!!!

Collins

8 years of experience
362 reviews
Collins
8 years of experience
ML430 1999 - Ignition Cable (Spark plug wires) - Kennesaw, GA
COLLINS was very knowledgeable and worked hard on fixing my car which is now running GREAT!!! I have more work I need to book with YourMechanic and I would like to request COLLINS for all duture work!!!!!

Kenneth

6 years of experience
808 reviews
Kenneth
6 years of experience
ML430 1999 - Rear lights are not working - Los Angeles, CA
Great

Excellent Rating

(29)

Rating Summary
29
0
0
0
0
29
0
0
0
0
Number of Mercedes-Benz ML430 services completed
319+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

How Long Do Car Lightbulb Fuses Last?
Like Like other electronic systems on your vehicle, your headlights have a fuse that ensures operation, but also protects against voltage fluctuations. A fuse is really nothing more than a bridge – there’s a small piece of metal that connects...
How Can You Tell That Your Fuel Pump Isn’t Working?
The The fuel pump is responsible for getting fuel out of the gas tank and up to the engine. The pump itself is usually located inside the gas tank. There are a handful of symptoms to look out for that...
Child Seat Safety Laws in Wyoming
In In Wyoming, there are laws in place to protect children from injuries or death in the event of a motor vehicle crash. They are grounded in common sense, and should be understood by anyone who transports children. Summary of...

Emergency flasher won't work in 2008 Nissan 350Z

It seems that your Nissan may have an issue with the emergency flasher switch or perhaps the flasher relay itself. This is definitely both an electrical issue and safety issue that needs to be resolved as soon as possible. As...

Car misfires when cold

My first recommendation would be to have the Check Engine light scanned (https://www.yourmechanic.com/services/check-engine-light-is-on-inspection) for the code it has produced to ensure that a misfire is the issue. Once the code has been pulled by qualified technician, they will be able...

Thought it was the battery but could possibly be the alternator

Bad connection can be confusing. They are touching and the connection may even be tight, but electricity doesn't care about what our eyes see. Electricity happens at the atomic level. A bad connection is a loose connection or a surface...

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