Vintage BMW Motorcycle Owners

Vech at Bench Mark Works can set you up with the plug you need:

http://members.aol.com/vechbmw/index.html

Check out near the bottom of this page...it shows various cross references:

http://www.snafu.org/restore/uandm_bmw_v1.pdf

The W240 T1 is a 14mm 1/2" reach plug. In the Bosch variety, that should be W4AC or W4A2 as shown in the PDF file above. NGK B8HS or B7HS (different heat ranges) will work. This page breaks down the NGK numbering system:

http://www.ngk.com/sparkplug411_ngk.asp

This page has many cross references:

http://www.clubplug.net/bosch_ngk.html

Vech posted on another forum to not use a Champion plug...he probably knows what he's talking about. Most likely, there's not a good control on the threads.

HTH...Kurt in S.A.

Kurt, thanks a million. Your links were great resources and the NGK B8Hs is the one I'll use.

Paul

Below is such a terrific resource, it must be posted daily..
Contains all things regarding BMW spark plugs.
Equivalents are at the lowerpart of the article.
http://bmwmotorcycletech.info/sparkplugs.htm

Do not leave this page without going to the Technical Index and bookmarking it! Good Luck!

My recently purchased 1961 R27 has the Bosch W 240 T1 sparkplug. It needs to be replaced badly and where I live the two auto parts stores do not stock Bosch.

What is the modern day closest match to that plug (either Champion or Autolite)?