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      09-30-2013, 02:27 AM   #1
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Cant Find N55 Spark Plugs

I have looked at all the part stores and some online and most have N54 plugs with look like double platinum, but from what I can see the N55 uses iridium it seems I could be wrong.

getbmwparts.com doesnt even have my plugs!


Is this a good plug for a 2011 N55?

http://shop.advanceautoparts.com/web...923%7CL2*15034


I actually was looking for this plug:

http://www.turnermotorsport.com/p-14...ngine-n55.aspx
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      10-08-2013, 11:43 AM   #2
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Go to eBay.
Look for seller: germanautosupply

Got my plugs and coils from there.
If they are not listed, then contact him.

The Best part about this seller: his items are the latest, like manufactured date is like new.

Regards,
DN
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      10-08-2013, 01:28 PM   #3
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They are under the engine cover. You must remove the lower and upper cabin air filter housings and cable tray first.
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      10-08-2013, 01:43 PM   #4
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Quote:
Originally Posted by Efthreeoh View Post
They are under the engine cover. You must remove the lower and upper cabin air filter housings and cable tray first.
No dude he is saying that he could not find a site to buy the spark plugs.
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      10-08-2013, 06:22 PM   #5
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Quote:
Originally Posted by Delta0311 View Post
No dude he is saying that he could not find a site to buy the spark plugs.
LOL - Dude, I know, I was goofing around
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      10-08-2013, 06:34 PM   #6
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Quote:
Originally Posted by Efthreeoh View Post
LOL - Dude, I know, I was goofing around
Although you almost need a phd in engineering to get to them.
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      10-08-2013, 07:16 PM   #7
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Quote:
Originally Posted by Delta0311 View Post
Although you almost need a phd in engineering to get to them.
Exactly the point! I mean, seriously, could the power cables from the battery terminals have been routed to the firewall and out of the way?
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      02-18-2014, 01:42 AM   #8
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Changing N55 Spark plugs

Here's what I found, after a bunch of looking around. Now granted, these may not be the best prices, but it saved me $60 compared to the BMW dealership. Big surprise, huh?

Original plugs have one prong, 12-point casing (NOT HEX HEAD!!!), are marked "Bosch R6", with a sideways "E" in blue, then stamped " ZR5TPP33-S Germany 001 "

According to some sites, it can be listed as BMW part # 12120037582, or 12120037580 (supersedes 12120037051 and 12120036759)

--- found retailers ---
1) www.finditparts.com ($14.24 ea). Free shipping ($85.44 for 6 plugs)

2) www.turnermotorsport.com $17.95ea, shipping $11.18 ($118.88 for 6) Edit:see Jan 2, 2015 post for updated price!

3) www.rockauto.com (pack of 10 reqd!) $9.56 each, $96.50 for pack. $8.87 shipping. ($105.37 tot for 10)

4) www.davesdiscountautoparts.com (Pack of 10 reqd!) $10.09 ea, $100.09 for pack, Free shipping on $100 or more ($100.09 tot for 10)

5) summitracing.com $10.97ea (not in stock, but they will order 6. Free shipping on orders over $99, $9.95 s/h ($75.77 for 6 plugs)

6) www.worldsbestautoparts.com (in Cleveland OH) $9.37ea. Site says "call for availability" 888-608-0880. Shipping unknown.

7) www.ecstuning.com $86.17 backordered

I ended up buying them from www.finditparts.com

Here's how. 0sammyf did an awesome job on these videos:
Part 1 =

Part 2 =


Do not forget, if you DIY, you need a special thin-walled BMW 12-point, 14mm spark plug socket!!! http://amzn.com/B00EDN3V0G
A standard hex spark plug socket just will not work. Neither will a 14mm 12-point regular socket. The walls on a standard socket are too thick to allow the socket down into the opening.

Also, make sure you put a tiny bit of lube on the ceramic end (NOT THE THREADS!) of the plug you are installing so you can retrieve the socket. Otherwise the socket sticks to the end of the plug with that little rubber grommet. I fell for this the first time, and spent two hours getting that bugger out of my engine.

Torque spec for tightening the spark plugs in N55 engine is 17 lb-ft (or 23 Nm). And yes, you really should use a torque wrench for this! Or as some other posters say, finger tight +90 degrees. Over-tightening can easily snap a plug and cost you muchos buckos. http://www.e90post.com/forums/showth...light=ZR5TPP33
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Last edited by GB-335xiCoupe; 01-02-2015 at 11:57 AM.
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      02-20-2014, 04:56 PM   #9
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Found them!

Well, finditparts called me, said they don't have the plugs in stock. They called Bosch manufacturing, and my plugs have a 3 month lead time.
WHAT!!!

So, I decided to try to call around and find them locally. How quaint, to not order them online.
NAPA: Exact part not in computer even after I gave him the BMW part number and the Bosch part number. No alternate part suggestions.

CarQuest: Exact part not in stock, but *ding ding* - alternate part: Denso Part Number FXE22HR11, Iridium 3442. Not sure if the 3442 is a stock number or what. $12 each. I bought them right away. $82.23 w/tax. I didn't look any further. (Amazon carries these too: http://amzn.com/B002FOO8HU ) [EDIT - THESE PLUGS NOT GOOD, see next post]

Google search did not find the other brand equivalent. Must be another conspiracy, right after the WTC and the "Bun/Hotdog Equivalency" conspiracies.

Now pics:
I think these were overdue for replacing -


Comparison of Bosch ZR5TPP33 and Denso FXE22HR11 Iridium 3442 -


Here's a side-by-side showing the whole plug -


I will replace them all tonight and we shall see the enormous efficiency gains! I already replaced one of them (the #1 you can get out without taking the rear engine cover off). Car started, and ran perfectly. Still had to use the special thin-walled BMW 12-point, 14mm spark plug socket!!! http://amzn.com/B00EDN3V0G
Also, the ceramic barrel of these Denso plugs are smaller in diameter, so the socket doesn't grab onto these like it does the original BMW ones. I used a magnetic part retriever to lower it into the engine. I just started the treads enough to pull the magnet off and then tightened with the socket.

3 months? Bah.
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Bought 08/09/2013@53,340mi Current 08/09/2015@124,098mi
Fail(s): tstat hous/water pump 89k, Chargepipe 106k, coolant tank 114k, FRM3 114k
Maint: Walnut blast 101k, Trans/T-case Fluid 103k, Brakes 104k,
R132a 120k

Last edited by GB-335xiCoupe; 02-21-2014 at 06:10 PM.
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      02-21-2014, 06:19 PM   #10
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I had to swap my plugs out again. Now that I know the drill, I can do this in 45 minutes flat. I took out the Densos - they ran like crap after the engine heated up. Under no acceleration or light acceleration, they were fine. Add just a little gas and the engine shuddered.
Shuddered BAD.

I got to my customer driving like a grandma, about 100 miles away. After I was done, I asked to borrow a dock bay and he let me change out my plugs. I am forever grateful to him, because it's only 13 degrees outside. Put my old plugs in, and all is good now. Except I still need new plugs.

Bottom line: If you can't find Bosch ZR5TPP33 plugs, don't do anything until you find Bosch ZR5TPP33 plugs.

My 2 cents.
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Fail(s): tstat hous/water pump 89k, Chargepipe 106k, coolant tank 114k, FRM3 114k
Maint: Walnut blast 101k, Trans/T-case Fluid 103k, Brakes 104k,
R132a 120k
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      01-02-2015, 11:49 AM   #11
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Just looked back at this thread because I'll be due for plugs again soon... Turner or Amazon are probably the places to go right now, as long as they have them in stock...

http://www.amazon.com/Bosch-ZR5TPP33...ype=automotive $11.55 each. Only one in stock!

Or
http://www.turnermotorsport.com/show...rbo-engine-n55
$71.70 for six without shipping as of Jan 2015.

Last edited by GB-335xiCoupe; 01-02-2015 at 12:04 PM.
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      01-06-2015, 09:49 PM   #12
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Never go with anything but s Bosch or perhaps an NKG plug. It's not worth it๐Ÿ˜.
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      01-09-2015, 04:51 PM   #13
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Time for mine very soon, here is a link to Amazon but they're pricey:

http://www.amazon.com/Bosch-ZR5TPP33...dp/B0068M2YTE#
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      01-10-2015, 02:57 AM   #14
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I just received the last one for $11.55... I'll gradually stock up, and when I need them, I'm ready to go...
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      Yesterday, 03:53 PM   #15
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Hey Gents,

Getting ready for a spark plug change before road trip. I noticed that the Amazon links posted (http://amzn.com/B0068M2YTE) are for Bosch ZR5TPP33 *NOT* ZR5TPP33-S

As far as I can tell, we want ZR5TPP33-S, but I can't find anywhere online about people having bad luck with ZR5TPP33, plus they are Amazon prime.

So my question is, is it OK for me to use ZR5TPP33 on my 2011 335iXdrive N55?

Thanks in advance!
JD
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      Yesterday, 10:38 PM   #16
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Quote:
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They are under the engine cover. You must remove the lower and upper cabin air filter housings and cable tray first.
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