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Old 07-12-2012, 05:51 PM   #1
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Spark Plug number

The dealer quoted $500 to replace 6 spark plugs. The cost of spark plugs are $30 each and the rest is labor. I may just do the job myself. Can anyone tell me what spark plug I need? Nothing fancy. Just a good OEM replacements.

I have a 2007 Boxster S w/3.4L engine. Thanks.

By the way, I have searched this site, but most folks here have 2001 and older cars, 986 models, and 2.5/2.7 engines. Couldn't find any recommendations based on my model and year car.
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Old 07-12-2012, 05:58 PM   #2
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$30 each? Tell you what, I'll sell you them for $20 each. It's a great deal! Promise!

Hell, for half what the dealer is charging you, I'll drive up to TN and even change them out for you.

Porsche Cayman - Ignition Tune Up - Page 1
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Old 07-13-2012, 04:38 PM   #3
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Thanks for the link bar10dah.
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Old 07-13-2012, 05:23 PM   #4
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OEM is 10.50 from pelican. it's certainly a DIY. put the car in the air and remove the wheels to make it easier. i did it myself a few years ago.

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Old 07-14-2012, 08:33 PM   #5
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Super easy DIY in 1 hr.
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Old 07-14-2012, 08:53 PM   #6
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$4.50/ea from Speed Geek if you are really looking for a bargain.
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Old 07-15-2012, 01:14 PM   #7
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It's a simple DIY, just did it. He's trying to make about 600+/hour labor on you as it should take someone with a lift and the right tools MAYBE 40 minutes at the very most... as said prior about an hour doing it yourself. That is simple robbery
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Old 07-15-2012, 02:48 PM   #8
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I have a 2001 and access to a lift how do I go about changing them and what should they be gapped at ? Thanks
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Old 07-15-2012, 04:32 PM   #9
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write-up from 101 projects
Pelican Technical Article: Replacing Boxster Spark Plugs and Coils - 986 / 987

pedro also has a really good write up (this is the one i used)
http://www.pedrosgarage.com/Site_3/Change_Spark_Plugs_%26_Tubes.html

stateofidleness also did a write up on the forum here
Another Spark Plug DIY (for dummies)

essentially:
1. put the car in the air
2. remove the back wheel(s)
3. using an allen bit, remove the 2 bolts on the coil packs, remove the coil packs
4. remove the spark plug
5. install new plug (30 Nm, no anti-seize (according to some))
6. replace coil pack (10 Nm on the bolts)
repeat for each plug (there are obviously 6)

they should come "pre-gapped" no need to adjust. if you drop one (like i did) the proper gap is (i believe) .028

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Last edited by tonycarreon; 07-15-2012 at 04:36 PM.
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