Spark Plugs

Hey there
Can I install NGK spark plug 6509 on buick 3.5L rendezvous cxl 2006?
If I cannot what dangers are there?
On some sites I see it mentions a fit and others it doesnt.
Please advise
Thank you!

you might be able to install those but they are for the 3.6L engine for 2004 and 2006. the ngk plugs for your year and engine are 5599.

the spark plugs you have are 25mm in reach while the plugs made for your engine are about 18mm (.708 inches or 17.983)

I would not recommend you use those plugs