MK4 Spark Plugs Models and Specifications!

[vasillalov]

Hi all,

Ever since I joined the vortex I see people asking about the correct spark plugs for their engine. Many debates have developed over time and if one does a search he would find a lot of conflicting information.

So I spent 10 minutes digging through my Bentley Manual and I created the chart below. I hope this will be useful to all who need to know more about the spark plugs needed for their engines!

UPDATE: On The Third Line Bottom Up, I made a mistake! I am lising the AWD engine twice! It should be AWD, AWP, AWW

Please, note that this data is gathered from the Official Factory Repair Manual published by Bentley Publishers!


Modified by vasillalov at 12:30 AM 8-29-2005

[TRVW]

Thanks for posting this info up. By chance is there info on a 1.8t AWW engine code? Thanks again!

[guyvwlax]

Great MAN ...... Needs to go on DIY

[vasillalov]

Quote, originally posted by TRVW »

Thanks for posting this info up. By chance is there info on a 1.8t AWW engine code? Thanks again!

My bad! I forgot about that! I would have to update it....

[redzone98]

are all these part numbers NGK ?

wonder why VW didnt use bosch plugs ?

[vasillalov]

Quote, originally posted by redzone98 »

are all these part numbers NGK ? wonder why VW didnt use bosch plugs ?

Now, not all of these are NGK! The Bentley manual only has the model number and not the manufacturer. For an example, the 2.0 AEG engine uses NGK spark plugs. Other 2.0's use BOSCH!

[vasillalov]

This needs a bump!

[FaelinGL]

Vasil,

I was under the impression that when you buy platinum plugs, you don't have to gap them since they are pregapped for the vehicle in question. I've always run NGK IX's. Let me know if I need to change this: http://forums.vwvortex.com/zerothread?id=1792683.

Mike

[ri-v-dub]

here's all the info on 1.8T spark plugs... http://forums.vwvortex.com/zer...15573

[Bora_Azul]

Quote, originally posted by TRVW »

Thanks for posting this info up. By chance is there info on a 1.8t AWW engine code? Thanks again!

ihave stock replacements for that engine code..i'll sell them to you cheaper than regular... unless you're running a big turbo these will be fine

[Fugee]

Thanks mang

[RavinJetta]

nice chart

[Outlaw vdub]

Funny, I just went through all this hassle of spark plugs. It depends if you have mods done. I bought a set of NGK's one range colder and they gapped them to .030, which is stock. I put them in and it ran like crap. Went out and bought a proper feeler gauge set and regapped them to .028 and now she runs great. No rough idle, no misfires. Just make sure you torque them down properly or the coils will pop up all the time.

[ri-v-dub]

Quote, originally posted by Outlaw vdub »

Just make sure you torque them down properly or the coils will pop up all the time.

tell that to my dealer

[vasillalov]

ttt

[mconfes]

I had a shop replace a faulty coil pack and they installed new plugs in the process. They didn't both to ask me if I wanted the NGKs and just put in bosch or something like that. Will this make a big difference in idle, response and mileage? What are the chances that they'll swap them back out for the correct plugs?

[SAMNYCVR6]

what is the difference between 2.8l bdf and afp?
i have a 2000 jetta vr6 which one would be for me?

[bluefox280]

Quote, originally posted by SAMNYCVR6 »

what is the difference between 2.8l bdf and afp?

The 2.8L with engine code AFP, is the 12v VR6.
The 2.8L with engine code BDF, is the 24v VR6.

Quote, originally posted by SAMNYCVR6 »

i have a 2000 jetta vr6 which one would be for me?

You have the 12v, AFP.

- Erik

[danger_mouse]

Quote, originally posted by FaelinGL »

Vasil, I was under the impression that when you buy platinum plugs, you don't have to gap them since they are pregapped for the vehicle in question. I've always run NGK IX's. Let me know if I need to change this: http://forums.vwvortex.com/zerothread?id=1792683. Mike

So you don't have to gap the dealer bought plugs?

[ZeRo_WBE JeTTa]

what are the best plugs to run on a stock 1.8t wolfsburg jetta ?

[formerly silveratljetta]

Quote, originally posted by ZeRo_WBE JeTTa »

what are the best plugs to run on a stock 1.8t wolfsburg jetta ?

ngk bkr6e's gapped to .032

[V-dubbulyuh]

Weird ish... this car place that I went to today lists the stock 12V vr replacements as 6E as opposed to the 5E posted up here in the table. Regardless, I'd be more inclined to trust the Bentley values instead of this car shop.

[Jokerjokester55]

Eeek! i have Bosch in my AEG 2.0 right now......problem??

[00g0lf]

Jokerjokester55-

Maybe, Maybe not.

I put Bosch plugs in my AEG and it ran like crap.

Switched them out for the stock NGK's and it runs like a charm

If it is running well and you're getting good gas mileage, i'd leave em....at least until next time your doing a service, and then change 'em

Mitch


Modified by 00g0lf at 10:22 AM 9-15-2007

[Jokerjokester55]

what do you mean by "doing a service"? the next time i bring my car to the mechanics? or the next time i have to change the plugs? also, how often do they need to be changed??

thanks

[Dmart44]

I have been having some lagging problems when i would accelerate and when my car was in idle. I was thinking it might me the mass air flow sensor but i figured i try new spark plugs.

Long story short I bought 4 NGK-BKR6E spark plugs (gapped .28) for my 1.8T and all the lagging problems went away.

Much cheaper than an air flow sensor.

Note: MKIV is chipped

[poyg06]

What would be the best plugs for my 2005 2.0? how many ft.lbs? also what would be my engine code??? its a drive by wire!
BTW, Thanks for the awesome thread!

[84'rabGti]

I have a 2004 1.8t that is running 18psi, has quite a bit of mods. chip,fmic,pulleys,dv,full exhuat, intake. it runs really rich and havent had the time to go get it tuned, i just pulled the plugs that were in it when i bought it NGK 8 v power r5671a
i looked around and haven't heard anything on these.
???

[nogz]

I'm about to replace the spark plugs on my GTI MK4 1.8T since I am now feeling this little vibration when I'm in idle and there's a delay in power when I press on the gas...

I am confused about what brand to get. Should I get NGK? Bosch? or should I just drive to the dealership and get an OEM plugs from them? Please help!!! THANK YOU!

By the way, thanks for creating such informative thread! SALUTE!

[.LSinLV.]

I'm about to replace the spark plugs on my GTI MK4 1.8T since I am now feeling this little vibration when I'm in idle and there's a delay in power when I press on the gas...

I am confused about what brand to get. Should I get NGK? Bosch? or should I just drive to the dealership and get an OEM plugs from them? Please help!!! THANK YOU!

By the way, thanks for creating such informative thread! SALUTE!

back from the dead thread.

go to the forums/technical/1.8T/FAQ's thread, it has all of the specs and info you need.