Spark plugs

Mr Pig

Active Member
Jun 17, 2015
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I'd buy them from the dealer. That way you'll be sure you've got the right ones.

My son bought his plugs from an aftermarket place and when I pulled the old plugs out we found that the seat on the plugs was wrong. And they don't supply junk. The plugs you get from the dealer will be as good as any.
 
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RUM4MO

Active Member
Jun 4, 2008
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South Scotland
I always to plan ahead and buy in a set of the correct NGK plugs from a source that I seem to trust.

The NGK website should supply the correct info, though I always confirm that by checking an up to date online VW Group parts listing.

Ending up with the wrong plug seat design is a major fail - obviously.
 
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Mobbs69

Active Member
Jun 28, 2016
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Northamptonshire
I always to plan ahead and buy in a set of the correct NGK plugs from a source that I seem to trust.

The NGK website should supply the correct info, though I always confirm that by checking an up to date online VW Group parts listing.

Ending up with the wrong plug seat design is a major fail - obviously.
Thanks
 

Mobbs69

Active Member
Jun 28, 2016
103
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55
Northamptonshire
I'd buy them from the dealer. That way you'll be sure you've got the right ones.

My son bought his plugs from an aftermarket place and when I pulled the old plugs out we found that the seat on the plugs was wrong. And they don't supply junk. The plugs you get from the dealer will be as good as any.
Thanks
 

TheSwede

Active Member
Oct 20, 2018
356
197
Sweden
If you want NGK i gues it is NGK PLFER7A8EG /94833

All the cars below have the 4 cyl engine EA888
NGK PLFER7A8EG is the spark plug for:
My former Golf mk7 R 2.0 TSI 2014 300 hp.
My Cupra R mk3 2.0 TSI 2018 310 hp
My Golf mk7 Alltrack 1.8 TSI 2018 180 hp.

In all these 3 cars I have installed new NGK spark plugs during the years.
As you can see the same plugs despite 1.8 or 2.0 liter engine.

The vw dealer was very expensive, nothing for me ;).

PS Check your car to be safe. Most likely it is the NGK plugs i have used... if the car is made before 2018 April.
 
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RUM4MO

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Jun 4, 2008
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South Scotland
Yup, same here from 2000 VW Passat 4Motion for my family, 2000 VW Passat 4Motion, 2002 VW Polo 1.4 16V, 2009 SEAT Ibiza 1.4 16V, 2011 Audi S4, 2015 VW Polo 1.2TSI 110PS - I've no idea about older daughter's 2019 SEAT Leon Cupra 290 yet, I don't know if it will be me that services it this year as the service package has run out and younger daughter's 2019 SEAT Arona 1.0TSI 115PS, I might get that plug changing job when she visits next month!
 
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SuperV8

Active Member
May 30, 2019
1,545
685
@Mobbs69, NGK are or at least were a supplier of spark plugs to VW Group, so if your car has VW Group branded spark plugs in it now, there will also be the NGK part number stamped around the metal mark at the base of the plug.
The EA888 engine has either Bosch or NGK plugs as original fitments.
There are 3x different OEM part numbers for plugs - depending on production date & engine code.
I don't know what - if any differences there are in these 3 numbers?
 
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Mobbs69

Active Member
Jun 28, 2016
103
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Northamptonshire
Yup, same here from 2000 VW Passat 4Motion for my family, 2000 VW Passat 4Motion, 2002 VW Polo 1.4 16V, 2009 SEAT Ibiza 1.4 16V, 2011 Audi S4, 2015 VW Polo 1.2TSI 110PS - I've no idea about older daughter's 2019 SEAT Leon Cupra 290 yet, I don't know if it will be me that services it this year as the service package has run out and younger daughter's 2019 SEAT Arona 1.0TSI 115PS, I might get that plug changing job when she visits next month!
Thanks for the imput mate
 

Mr Pig

Active Member
Jun 17, 2015
2,706
953
There are 3x different OEM part numbers for plugs - depending on production date & engine code.
This is the good reason to get the official Seat plugs.

A few weeks ago I replaced the fuel filter on my daughter's Toledo. I looked at lots of different sites with loads of options varying from about ÂŁ15 for the cheapest aftermarket one to ÂŁ35 for the Seat/VW filter. What I noticed was that there were several different VW part numbers for what looked like the same filter while the aftermarket ones had the one part for lots of different cars.

I decided to plat it safe, pay the extra and get the VW item from the Seat dealer. I asked the service guy about the part numbers when I collected it and he said yes, the filters look the same but they are slightly different. The filter provides a specified amount of resistance to the flow and that varies from one car or engine to another. He said that people sometimes fit aftermarket filters and the car develops issues, engine doesn't run quite right. They then spend ages trying to figure out what's wrong with the engine when it has nothing to do with it. It's because they fitted the wrong fuel filter.
 

TheSwede

Active Member
Oct 20, 2018
356
197
Sweden
This is the good reason to get the official Seat plugs......

Hmmmm Mr Pig..... Don't want to be rude but I don't agree :D;).

My guess is that the Leon Cupra 2017 in this tread have the engine code CJXC which is exactly the same as I had in my former Golf R 300 mk7 2014. I have used NGK PLFER7A8EG in the Golf R for many years without problem. Why pay 2 times more (at least in SE) for the same product when you know what to buy.

The final check is when you have them on your desk and compare treads, length and so on to the old ones.

Good luck!

https://www.ngkpartfinder.co.uk/catalogues/cars/search/spark-plugs/SEAT/LEON/2017/

2023-05-30_16-24-18.jpg
 
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RUM4MO

Active Member
Jun 4, 2008
7,966
1,059
South Scotland
Usually the smart plan for petrol filters in these cars, and VW Group don't consider replacing them as being part of routine servicing, is to stick your head under the car and record the part number and you can usually also record the pressure setting of the built in valve, then pick one from your preferred brand, all the ones I've looked at as fitted at factory, tend to be made in China, UDI brand or a similar name of brand, that name was probably not correct.

Making sure that you are buying the correct plug or same as fitted at the factory, is to remove the easiest one to reach and check the numbering standing around the base metal part. Sometimes plugs have been revised and you need to get the later version, sometimes, across the VW Group marques, for the some age of car and type of engine, only one or two out of the four marques have actually updated the spark plug part number to reflect the change.
 
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martin j.

Active Member
Feb 11, 2007
1,997
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Fife
Hmmmm Mr Pig..... Don't want to be rude but I don't agree :D;).

My guess is that the Leon Cupra 2017 in this tread have the engine code CJXC which is exactly the same as I had in my former Golf R 300 mk7 2014. I have used NGK PLFER7A8EG in the Golf R for many years without problem. Why pay 2 times more (at least in SE) for the same product when you know what to buy.

The final check is when you have them on your desk and compare treads, length and so on to the old ones.

Good luck!

https://www.ngkpartfinder.co.uk/catalogues/cars/search/spark-plugs/SEAT/LEON/2017/

View attachment 36966
If you buy at dealer you are almost 100% sure of getting a genuine plug, there are masses of fakes out there and some are in the aftermarket factors arena, very hard to spot until they fail. Just saying.
 

DigitalSushi

Active Member
Sep 7, 2020
147
68
I cannot remember the ones I had but i did have a little issue in fitting them.

When removing the coil packs there is a wire that you need to unbolt first before undoing the next nut to remove the coil pack

1685533051070.png


Just make sure you have a spanner on the nut on top as well as the one below it. I actually had to take one of my spanners and grind it down a bit so it coulds slide onto the bottom nut

I went a bit ham fisted on the first one with just one spanner and the bolt I thought was captive in the head wasn't. It twisted and I actually snapped the wire by accident

Bit of soldering was needed and its all good now but best to know beforehand
 
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