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E-Class (W124) 1984-1995: E 260, E 300, E 320, E 420, E 500 (Includes CE, T, TD models)

Bosch Spark Plugs

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Old Dec 5, 2008 | 08:38 PM
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W124's
Bosch Spark Plugs
So, I ordered Bosch spark plugs online via Autohausaz.com and they sent me too different kinds and I'm wondering if they are technically the same or if they sent me them at error.

they sent me three Bosch Super F8DC4

and then five Bosch SuperPlus F8DC+

did the Bosch SuperPlus superceed the Bosch Super?
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Old Dec 5, 2008 | 09:51 PM
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1994 E420
according to the bosch website

the F8DC4 is the OE plug with the Nickel chromium ground electrode

the superplus has the Yttrium-enhanced copper core center electrode

they sent you 2 different kinds..both gaps are the same at .032

i would pick the superplus because of the copper core

in my e420 I have the platinums 4,

I did have the superplus before and it worked great
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Old Dec 6, 2008 | 06:28 AM
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I won't be able to use both?
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Old Dec 6, 2008 | 07:15 AM
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88-300CE TWIN TURBO, 99-C43, 05-G55K, 71-280SL, 94-E320 CAB, 08 CLK63 BLACK SERIES
Originally Posted by ChrisDPham
I won't be able to use both?

Chris

Get eight plugs with the same specification....primarily the OE plug.
The supplier should realize their mistake.

Running two plugs even with slightly different characteristics could potentially lead to overall performance problems.

Possibly not immediately, but more likely as the miles accumulate !

Ed A.
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Old Dec 6, 2008 | 02:35 PM
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Go for the OE plug. All 8...I agree with Ed.

jmang, Platinums are GARBAGE for our cars, you'll benefit from replacing them with OE's
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Old Dec 6, 2008 | 03:05 PM
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1994 E420
Originally Posted by ZorroAMG
Go for the OE plug. All 8...I agree with Ed.

jmang, Platinums are GARBAGE for our cars, you'll benefit from replacing them with OE's
really?

never had a problem with my 420 or my old 320 (210K+)

but i will look into it

thanks.
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Old Dec 6, 2008 | 03:16 PM
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So, Should I use the newer SuperPlus F8DC+ or the Super F8DC4?

wow, what a pain in the *** - I wanted to install these this weekend too.

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Old Dec 6, 2008 | 04:56 PM
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After more research

I would use the Super F8DC4

I am going to switch to those in a couple of weeks.

They are the factory originals
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Old Dec 6, 2008 | 07:16 PM
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Enzo, my Benzo
Plus has resistors. Boo on resistors.
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Old Dec 7, 2008 | 12:45 AM
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Originally Posted by ZorroAMG
Go for the OE plug. All 8...I agree with Ed.

jmang, Platinums are GARBAGE for our cars, you'll benefit from replacing them with OE's
MB trained mechanic told me NO platinum - use OE.
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Old Dec 7, 2008 | 02:48 AM
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be careful when removing the wires from the sparkplugs.
those things are pretty damn brittle as i found out the hardway.
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Old Dec 7, 2008 | 02:05 PM
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Yeah Chris do both plugs AND wires
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Old Dec 7, 2008 | 03:56 PM
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Originally Posted by ZorroAMG
Yeah Chris do both plugs AND wires
Will do!

Damn wires are almost $200 for the set!!!
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Old Dec 7, 2008 | 04:47 PM
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Plugs, caps, rotors, & wires may solve your problem.
Be sure to gap the plugs.
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Old Dec 8, 2008 | 05:20 AM
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I thought the Bosch plugs are already pre-gapped?
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Old Dec 8, 2008 | 11:09 AM
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They are. You'll be good to go with new wires and once you get all 8 plugs the same PN.

Good luck man!!
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Old Dec 8, 2008 | 11:19 AM
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From: REHOBOTH BEACH DE
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Originally Posted by ChrisDPham
I thought the Bosch plugs are already pre-gapped?
Chris

They may be pre-gapped, but always check prior to install.
Easy to move .001 " +/- in shipping and handling.

Ed
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Old Dec 8, 2008 | 05:18 PM
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Originally Posted by ChrisDPham
I thought the Bosch plugs are already pre-gapped?
Never trust factory gap. They are rarely perfect out the box.

That way if you still have a problem, & lets hope you don't;
you can rule out the plugs, wires, distributor caps, & rotors.
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Old Dec 8, 2008 | 08:09 PM
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Originally Posted by ZorroAMG
They are. You'll be good to go with new wires and once you get all 8 plugs the same PN.

Good luck man!!
Sorry!

Hi jacking thread:

Zorro! Love the new Sig!!!
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