Mercedes-Benz E420 Fuel Injector O Rings Replacement at your home or office.

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Fuel Injector O Rings Replacement Service

How much does a Fuel Injector O Rings Replacement cost?

On average, the cost for a Mercedes-Benz E420 Fuel Injector O Rings Replacement is $291 with $39 for parts and $252 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1997 Mercedes-Benz E420V8-4.2LService typeFuel Injector O Rings ReplacementEstimate$356.44Shop/Dealer Price$387.14 - $453.73
Show example Mercedes-Benz E420 Fuel Injector O Rings Replacement prices

What is the Fuel Injector O Rings all about?

Fuel injector O rings are rubber gaskets around the end of the fuel injectors that hold the injectors up tight to the rest of the cylinders of your engine, and prevent fuel from leaking. If they’re not properly mounted, or if they’ve begun to deteriorate, you will lose fuel. They work like any other gasket – they will wear and crack as they age, and at some point will require replacement.

Keep in mind:

  • Fuel injector O rings are not inspected as part of your routine maintenance, but if your car has accumulated tens of thousands of miles, it is a good idea to have your mechanic check them out.
  • If your car is losing fuel, the rings may be at fault.
  • Don’t assume that the problem is with the O rings – your injectors could be clogged.

How it's done:

  • The vehicles hood is opened and battery disconnected
  • The defective fuel injector O-rings are removed
  • The new injector O-rings are installed
  • The battery is reconnected and engine started
  • The repair is verified for no fuel leaks and tested for proper operation

Our recommendation:

Fuel injector o-rings are not part of a maintenance inspection or service and are only addressed when there is a fuel injection problem or a fuel leak at the engine. If you suspect your fuel injector o-rings are leaking, have one of our expert mechanics inspect and replace them as necessary.

What common symptoms indicate you may need to replace the Fuel Injector O Rings?

  • Fuel leaking at the engine
  • Car not starting properly or running rough

How important is this service?

A fuel leak at the engine can cause a fire if the fuel ignites. Have leaking fuel injector o-rings replaced as soon as possible.

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Meet some of our expert Mercedes-Benz mechanics

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Excellent Rating

(24)

Rating Summary
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James

24 years of experience
130 reviews
James
24 years of experience
Mercedes-Benz E420 V8-4.2L - Steering Rack/Gearbox - Marietta, Georgia
Excellent service. Very knowledgeable and meticulous, ensuring that the work is flawless before he leaves. I highly recommend James.

Chris

12 years of experience
82 reviews
Chris
12 years of experience
Mercedes-Benz E420 V8-4.2L - Window Regulator Replacement (Driver Side Front) - Keyport, New Jersey
Very good service at a fraction of the price other places were charging. Will definitely be using again in the future and recommending to others.

TJ

23 years of experience
34 reviews
TJ
23 years of experience
Mercedes-Benz E420 V8-4.2L - Radiator - Glen Burnie, Maryland
See the rating areas

Ben

42 years of experience
1589 reviews
Ben
42 years of experience
Mercedes-Benz E420 V8-4.2L - Water Pump - Houston, Texas
Courteous, knowledgeable, and kept in touch each step of the way. The wrong part was ordered and Ben handled things like a champ. I would certainly have no problems recommending.

Excellent Rating

(24)

Rating Summary
18
2
1
0
3
18
2
1
0
3
Number of Mercedes-Benz E420 services completed
264+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
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