Spark plug replacement

Williamziam

New member
4
0
1
16 regal turbo p2
I'm coming up on 50k on my stock 16 regal t and going to get spark plugs replaced. I was curious if anyone tried denso iridium tt and if so 4718 or 4719? I've found conflicting info and only difference seems to be the 19 is 1 heat range colder. Rock auto has been generally reliable in my history and they list the 4719 for 14 and 15 model but not 16. Im unaware of any significant changes bw those models. Any thoughts or insights appreciated!
 

Sam14GS

Full Member
344
80
28
Lake Worth, Florida
2014 Buick Regal GS & 2019 Hyundai Tucson Limited
I just changed my spark plugs and replaced them with the oem ACDelco plugs. After 65K, the original plugs looked good and still had .035 gap.
Make sure to use anti-seize on the new plugs. You will see why when you remove the originals ;)
 

BoostedRegal2.0

Well-known member
1,815
657
113
2014 Regal 2.0 Turbo AWD Trifecta Tune
Don't use any other plug but the originals in the turbo 2.0 motor. I put Autolite plugs in my Regal and it ran rough so I switched back to the AC Delco plugs.
 

Williamziam

New member
4
0
1
16 regal turbo p2
Did some more digging and found same info on denso site. 4719 applies to 14/15 but not 16. Everything I found so far here says OEM are optimal but I'm intrigued by design of denso iridium tt. Have message in to them for clarification as to why. Anyone know of any notable changes to engine from 15 to 16?
______________________________
 

OlSmokie

Member
34
9
8
Regal
I just changed my spark plugs and replaced them with the oem ACDelco plugs. After 65K, the original plugs looked good and still had .035 gap.
Make sure to use anti-seize on the new plugs. You will see why when you remove the originals ;)
I'm thinking about replacing the ones in my 16T. My old 2011 with the 2.4 was super easy. What am I getting into on the 2016T?
Nobody around here stocks plugs for it and I was wondering if it was because it wasn't a DIY job.
 

nlacomb

Buick Newbie
133
39
28
Buick
You can order the stock plugs on almost any website. Order them from rock auto.
______________________________
 
Get your turbo buick badge right here!
Top