E-Class (W211) 2003-2009

Plugs - Replace Coil Boot?

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Old Apr 26, 2023 | 11:40 AM
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robbieas's Avatar
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'07 E350 (W211)
Plugs - Replace Coil Boot?

FCP Euro has a kit with the plugs and the coil boot..... do I need to replace those coil boots are the ones in there maybe okay? Love to get some thoughts based on your experiences.

I feel like if I order them I'll definitely not need them, and if I don't I'll be kicking myself that I didn't!
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Old Apr 26, 2023 | 12:02 PM
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2017 GLE350 4MATIC
Originally Posted by robbieas
FCP Euro has a kit with the plugs and the coil boot..... do I need to replace those coil boots are the ones in there maybe okay? Love to get some thoughts based on your experiences.

I feel like if I order them I'll definitely not need them, and if I don't I'll be kicking myself that I didn't!
Not strictly necessary but the boots can become damaged if the factory assembly grease has dried into glue. This can cause the boots to tear when removing them. I replaced coils at 100k miles and recommend this. It makes a difference in smoothness. Coils are a wear item.
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Old Apr 26, 2023 | 04:26 PM
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Originally Posted by chassis
Not strictly necessary but the boots can become damaged if the factory assembly grease has dried into glue. This can cause the boots to tear when removing them. I replaced coils at 100k miles and recommend this. It makes a difference in smoothness. Coils are a wear item.
Plugs and boots together...You'll thank yourself later, besides it would be at best another 100K. It's like buying a nice outfit, but sporting old shoes. Just my humble opinion.
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