3.0i BMW Z3 Spark plugs

UK forum for general and technical discussion about the Z3 roadster

Moderator: Gazza

Post Reply
johnz3
Joined: Wed 13 Sep, 2006 11:27
Posts: 670

  Z3 roadster 3.0i
Location: Pitsea

3.0i BMW Z3 Spark plugs

Post by johnz3 » Sat 22 Aug, 2015 11:01

I want to change my spark plugs. Is there a view on what the best plugs are please. Also do they come already 'gapped' Thanks.

Cooper01
Joined: Tue 29 Apr, 2014 09:06
Posts: 152

  Z3 roadster 3.0i

Re: 3.0i BMW Z3 Spark plugs

Post by Cooper01 » Sat 22 Aug, 2015 13:21

Hi, I just replaced mine on the 2.2i. I got the platinum ones with the 4 arc points all went in just fine with no gap adjustment required. I cant remember the brand sorry but if you go to a supplier website and indicate your vehicle it will show you what you require. Hope this helps. Cooper

johnz3
Joined: Wed 13 Sep, 2006 11:27
Posts: 670

  Z3 roadster 3.0i
Location: Pitsea

Re: 3.0i BMW Z3 Spark plugs

Post by johnz3 » Sat 22 Aug, 2015 19:08

Thanks. I will have a look.

Del
Joined: Sat 19 Nov, 2011 18:35
Posts: 2122

  Z3 roadster 1.9

Re: 3.0i BMW Z3 Spark plugs

Post by Del » Sat 22 Aug, 2015 19:42

Do your own verification but I believe the main (current day) choice is:-

NGK BKR6EQUP - quality platinum plug

or

Bosch FGR7DQP+ - quality platinum & iridium plug

I am aware that BMW dealers have used both in the past. These may differ from the recommendation in the handbook as spark plug technology has moved on. Both have "4 prongs" and do not need adjusting. I put the latter Bosch in my 1.9 a year or so back and did notice an immediate improvement over the copper ones I took out - that still looked in reasonable condition. :)

User avatar
Brian H
Joined: Tue 16 Dec, 2008 19:55
Posts: 2503

  Z3 roadster 3.0i

Re: 3.0i BMW Z3 Spark plugs

Post by Brian H » Sun 23 Aug, 2015 09:13

Del wrote:Do your own verification but I believe the main (current day) choice is:-

NGK BKR6EQUP - quality platinum plug

or

Bosch FGR7DQP+ - quality platinum & iridium plug

I am aware that BMW dealers have used both in the past. These may differ from the recommendation in the handbook as spark plug technology has moved on. Both have "4 prongs" and do not need adjusting. I put the latter Bosch in my 1.9 a year or so back and did notice an immediate improvement over the copper ones I took out - that still looked in reasonable condition. :)
Agree with the NGK for our cars.

johnz3
Joined: Wed 13 Sep, 2006 11:27
Posts: 670

  Z3 roadster 3.0i
Location: Pitsea

Re: 3.0i BMW Z3 Spark plugs

Post by johnz3 » Sun 23 Aug, 2015 09:44

Great. Thanks everyone.

User avatar
lightning
Joined: Tue 27 Nov, 2007 08:15
Posts: 814

  Z3 roadster 3.0i
Location: Stockport

Re: 3.0i BMW Z3 Spark plugs

Post by lightning » Sun 23 Aug, 2015 21:26

At what mileage should they be changed? My 3.0 has done 55,000 miles and l don't think the engine covers have ever been off.

Del
Joined: Sat 19 Nov, 2011 18:35
Posts: 2122

  Z3 roadster 1.9

Re: 3.0i BMW Z3 Spark plugs

Post by Del » Sun 23 Aug, 2015 21:43

Copper "supposed" to have a maximum life of 30,000 miles, platinum 60,000 and iridium 90,000. OE service manuals normally combine it with a number of years and so might say something like "the first to come of 4-years or 60,000 miles". I've seen past posts on this forum where very old, original plugs in low mileage cars, have virtually started to disintegrate. If you suspect they are the originals I would definitely get a new set in there. :)

Post Reply

Who is online

Users browsing this forum: Google [Bot] and 7 guests