New OEM Spark Plug Update

Some more information regarding the newer OEM NGK sparkplugs from a forum member on Golfmkv.com:

When comparing to a bosch stock plug many goof on the difference in how their ranges work. Because of that some cross references out there show the 6 heat range NGKs being stock. If you go to NGK themselves and check THEIR application guides it shows a heat range 7 as being stock.

It seems that the newer spark plugs may not be one step colder.  I wonder why they changed over from the Bosch plugs?

Here is the older article: New OEM plugs

06H 905 601 A / NGK PFR7S8EG

Advertisements

New OEM Spark Plugs – 06H 905 601 A / NGK PFR7S8EG

 

New OEM Plugs

There is a new part number for the OEM spark plugs – 06H 905 601 A.  They are made by NGK now instead of Bosch.  The corresponding NGK part number is NGK PFR7S8EG.  This new plug is a double platinum laser plug that is also one step colder.  I guess all those people advocating one step cooler plugs were correct.  Anyway, I installed these last night and the engine is purring as always.  The BKR7EIX’s I had in there had begun to show erosion at the ground electrode and the gap had opened up considerably.  I did not notice any real change in performance, slightly smoother idle is pretty much it.  I’ll report back if it affects mileage considerably.

This plug supercedes part number 101 905 631 H which superceded 101 905 631 B.  The previous part was a Bosch FR6KPP332S.

Anyway, here are some pictures showing the new plugs.

A DIY is located here if you need it.  >DIY Spark Plug Change

*Update*

Some more information regarding the newer OEM NGK sparkplugs from a forum member on Golfmkv.com:

When comparing to a bosch stock plug many goof on the difference in how their ranges work. Because of that some cross references out there show the 6 heat range NGKs being stock. If you go to NGK themselves and check THEIR application guides it shows a heat range 7 as being stock.


06H 905 601 A / NGK PFR7S8EG

06H 905 601 A / NGK PFR7S8EG

06H 905 601 A / NGK PFR7S8EG

Spark Plugs for the 2.0T FSI BKR7EIX

(Last updated 2/3/2011) Please note that the a new oem spark plug has been recently specified for the 2.0 engines : 06H 905 601 A. Click here for more information

These are one step cooler than the older plugs, so it seems that these NGK’s are the new corrected heat range anyway.

These NGK iridium plugs are the smoothest running spark plugs I have tried in my car so far.  I don’t know what it is about them but they feel great!  This is all seat of the pants impressions, but they feel much better than the BKR6EIX numbers that I had in there before.  Those were the stock heat range by the way.

The BKR7EIX plugs are one heat range cooler than the stock plugs.  So far it seems to complement the stage 1 tune.  My car has ran on these plugs so far:

stock heat range copper plugs (BKR6E I believe) – car seemed to hate them, gas mileage down, power was meh

stock heat range NGK iridiums (BKR6EIX) – car was fine with them, I used them for 30,000 miles

stock VW Bosch’s – car ran just fine, if not a little better than the NGK’s above

one heat range cooler NGK’s (BKR7EIX) – car seems to love these, just a feeling that I cannot quantify, smoother acceleration, better   midrange power

My car is chipped, which may account for why it wants a cooler plug although APR recommends stock heat range plugs.  Can’t hurt to try them though if you need new plugs and have a tune.

The plugs are NGK BKR7EIX (note, no -11 suffix, that would be the wrong gap size)

The stock number is 2667


stock photo awesomeness

Copper Spark Plugs In The 2.0T FSI

NGK BKR6EIX

NGK BKR6EIX

So, upon hearing the “good things” about the performance of copper plugs versus platinum and iridium plugs, I decided to get a set.  My stock plugs were in need of replacements and at 10 bucks for a set of NGK coppers, I decided that it would be worth a try.  The stock heat range copper plugs are the NGK BKR6E (stock #6962).  I popped them in and they felt great.  Just like a new set of plugs should.  However, over the next 1000 miles or so that I had them on, I noticed my mileage beginning to go down.  I usually average about 28mpg on the highway and with the coppers it went down to about 24 and below.

I don’t have any explanations for why it happened.  This was on my daily commute as well.  The only thing I can think of right now is the firing end design.  Both the iridium and the stock platinum plug are fine wire designs.  Don’t ask me for an explanation as to why it would affect the combustion, it shouldn’t make that big of a difference.  But I saw it.  The tank range went down a pretty good amount.

Power was pretty much exactly the same, except with this seemingly terrible mileage.  I didn’t think it was the spark plugs until I decided to replace them with the NGK iridium fine wire equivalent, BKR6EIX.  My mileage went back to my normal 28-29 highway.

The copper plugs looked like they were running very well when I pulled them.  No deposits, even coloration, about as pretty as a spark plug could look.  Maybe the coil packs just didn’t like them or something.

*The weather has been getting cooler recently, and mileage has gone up some more.  This engine does not like the summer.

5/24/2011

The BKR6E may not be exactly the stock heat range.  The stock heat range may actually be a “7” for NGK plugs.  Maybe BKR7E is the appropriate plug.