1989 4.3 gm what sparkplug and what gap ?

C

canman

Petty Officer 1st Class
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Sep 11, 2006
Messages
247
hi everyone , i have a 1989 thundercraft with the 4.3 gm , can somebody tell me what sparkplug it takes and what the gap is ? i have had the boat for 3 years so i dont know how old these plugs are . thanks
 
Don S

Don S

Honorary Moderator Emeritus
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Aug 31, 2004
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62,321
Re: 1989 4.3 gm what sparkplug and what gap ?

AC MR43T Gap of .035 in.
 
Bondo

Bondo

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Apr 17, 2002
Messages
70,525
Re: 1989 4.3 gm what sparkplug and what gap ?

Ayuh,..... AC Delco, MR43T is the plugs,...
 
C

canman

Petty Officer 1st Class
Joined
Sep 11, 2006
Messages
247
Re: 1989 4.3 gm what sparkplug and what gap ?

thanks everyone
 
achris

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: 1989 4.3 gm what sparkplug and what gap ?

or NGK BR6FS.....
 
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