I can vouch for 4477 plugs- butt dyno approved. 

Chris.

Wysłane z iPhone'a

Dnia Sep 27, 2014 o godz. 17:55 Dennis Haynes <d23haynes57@HOTMAIL.COM> napisał(a):

> Not long term although many have. They are too long bringing the flame front close to the piston. If you want the multi tips get the 4477 Quads or the newer version. I forgot the new number. I am on the road
> 
> 
> Dennis,
> From my phone.
> ________________________________
> From: John Rodgers<mailto:jrodgers113@GMAIL.COM>
> Sent: ‎9/‎27/‎2014 5:50 PM
> To: vanagon@GERRY.VANAGON.COM<mailto:vanagon@GERRY.VANAGON.COM>
> Subject: Spark plugs - 2.l L
> 
> Can  Bosch plugs number W7DTC be safely use in the 2.1 L wasserboxer?
> 
> John