Which spark plug should I choose

[vouvoune]

A friend of mine is going to do my 30K inspection on my 99 boxster...I have to purchase the part and already ordered the air and cabine filter but I am not sure which plugs are recommended and how many do I need...My manual doesn't say...

here are the options:

http://replacement.********************************************************************************************/parts/autopartswarehouse/wizard.jsp?year=1999&make=PO&model=986--001&category=All&part=Spark%20Plug&dp=true

Anyone has used one or the other and liked it?
I would like to order it today so if you have a minute to reply that would be a b ig help to me...

Here is a good link for you:

http://e-partssales.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=P&Category_Code=986maint

[MNBoxster]

Hi,

The OEM Plugs are either Bosch or Beru, interchangeable. Most likely no difference between the two which are noticeable.

My recommendation is to always go with the OEM Plugs on a Stock engine. This is because a lot of thought went into selecting them in the first place with regard to Heat Range and especially Indexing, that is, which orientation the electrode has to the Flame Front. Using aftermarket ones may fail to maintain this proper Index leading to poorer combustion, greater emissions (or your emissions gear working harder - shorter lifespan) and possibly even a drop in performance and MPG.

Also, your Plugs play a key role in extracting Heat from the Combustion Chamber/Cylinder by carrying it to the water-cooled Head to take away. Different Plugs may less efficient in accomplishing this leading to lots of premature wear issues because of the use of different alloys or design.

Stay away from Platinum Plugs - generally Snake Oil. Lots of Marketing and promises, but few verifiable results. Also, there have been documented reports of the tips breaking off in Boxster engines and causing Piston/Cylinder Head, and Liner damage...

Happy Motoring!... Jim'99

[deliriousga]

Here's where I get mine. Pap-Parts

There are also full tune-up kits available from them at Pap-Parts Tune-Up Kit. Do not get the other tune-up kit they offer with the 4 electrode plugs. They do not meet the heat range specified by Porsche and can cause trouble in the long run. If you use Bosch plugs they should be FR 7 LDC and nothing else.

You should at least do the cabin filter and air filter while you're at it.

[AUDIOGUY]

"Do not get the other tune-up kit they offer with the 4 electrode plugs. They do not meet the heat range specified by Porsche and can cause trouble in the long run. If you use Bosch plugs they should be FR 7 LDC and nothing else. "

Question is what is the Stock plug in a 2001 Boxster S... is it the 2 electrode or the 4???

Thanks.

[deliriousga]

2 electrode is stock. If you go to the dealer for a plug change, you will never get 4 electrode plugs.