Genuine Mercedes Water Pump; Factory Rebuilt | 278200120180

Mercedes S550, GL450, E550, CLS550, SL550, GL550, ML550, CL550
$403.99
Reg
$420.82
List
$410.00
+Core
$39.50
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Make Sure It Fits

P/N: 278200120180 Genuine Mercedes FREE SHIPPING
Description:
Factory Rebuilt
Prior# 278-200-12-01
Cross References:
  • 2782000501
  • 278200050180
  • 2782001201
  • A278200120180

The engine water pump on your Mercedes circulates a mixture of water and engine coolant throughout the engine to maintain an optimal operating temperature. When the engine exceeds its optimal operating temperature, the engine water pump pumps the water and coolant mixture into the radiator to bring down the engine temperature.

If the engine water pump fails on your Mercedes, the water and coolant mixture will not be able to circulate through the engine to maintain optimal temperature. In some cases, the pump can leak allowing the water and coolant mixture to drip or pour from the engine causing the engine to quickly overheat. On newer vehicles with electric engine water pumps, a failed pump can cause the vehicle to enter limp home mode, only allowing the vehicle to reach a maximum speed of 25 MPH to prevent the engine from overheating.

Signs of a Faulty Water Pump
  • Coolant leaking under your Mercedes
  • Engine overheating
  • Whining or grinding noises from your engine
  • Check engine light on with a water pump fault

Belt run water pumps may also cause other accessories to stop working when the pump fails as it can cause the belts to jump off the pulleys.

Replacing Your Mercedes Water Pump
Generally water pumps are only replaced when they fail. However, due to how difficult it is to access some water pumps, to prevent failure it is recommended to replace timing belt driven water pumps during the replacement of the timing belt and timing chain.

Replacing your Mercedes water pump can be very extensive depending on where it is mounted on the engine. Due to this, it is recommended to replace any connecting hoses, the thermostat, timing belt and tensioner if applicable, timing chain with guides and tensioner if applicable, as well as any other seals or hoses that need to be removed to access the water pump.

View more Mercedes Water Pumps.

Any Genuine brand part is obtained directly through our vehicle dealership network from your vehicle's manufacturer. This is always your best option for getting the exact same part that is being replaced and will be the latest version design.
Left = Driver side and Right = Passenger side.
All parts are priced individually unless identified as a set or kit. "Per car" notes identify how many of a given part your car has and "Left/Right or Front/Rear" notes means the part fits the left or right side of the car. These parts are still sold individually and you'll need to select the appropriate quantity if you plan to replace more than one of this item.

Frequently Viewed Together

We found 10 additional part(s) that are frequently viewed together.

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Auto parts at wholesale prices is what you will find at AutohausAZ. Have you been searching the web for auto parts for your vehicle? You have come to the right place! Here at Autohaus, we strive to offer low prices on quality replacement parts and providing first rate customer service.

What This Genuine Mercedes Water Pump Fits?

Application information below is for reference only and should not be used to determine the exact vehicle fitment. Please use the "Make Sure It Fits" vehicle selection box above to determine the exact fitment and review any application notes. If you need any help determining if this part works with your vehicle, please don't hesitate to contact us.

Mercedes
12-13 - CL550 4Matic
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01.
11-11 - CL550 4Matic
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01. from engine # 30 001034 from 08/21/10
14-14 - CL550 4Matic
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01. thru engine # 30 222247 thru 07/02/14
12-18 - CLS550 Base, 4Matic
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01.
12-13 - E550 Base, 4Matic
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01.
14-14 - E550 Base, 4Matic
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01. thru engine # 30 222247 thru 07/02/14
13-13 - GL450
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01.
14-14 - GL450
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01. thru engine # 30 222247 thru 07/02/14
14-14 - GL550 4Matic
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01. thru engine # 30 222247 thru 07/02/14
12-13 - ML550
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01.
14-14 - ML550
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01. thru engine # 30 222247 thru 07/02/14
12-13 - S550 Base, 4Matic
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01.
14-14 - S550 Base, 4Matic
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01. thru engine # 30 222247 thru 07/02/14
13-13 - SL550
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01.
14-14 - SL550
Also use: (Qty.) (1) 278-201-03-80 Water Pump Gasket, (2) 278-203-01-03 Water Pump Plug, and (Qty.) as needed: 027-997-06-45 Turbocharger Coolant Line O-Ring. Also available in new: # 278-200-12-01. thru engine # 30 222247 thru 07/02/14