I need to buy the following asap but need to verify part #'s

1) 2 ac delco o2 sensors part#25312184, I believe that's the part# for the front o2's

2) replacement fuel filter part#25121293, correct?

3)oem gm metal manifold gaskets, which of the following part #'s is correct? Is it 12550033 or 12552469, I've heard both and am unsure.

Lastly does anyone know the part # for replacement acdelco spark plugs or does NGK make a platinum TR55 and if so, what's the part #?

Thanks

 

Correct.
Correct.
I show 12552469 to be the right one.
I donno, I just get the normal NGK TR55's

 

Here's cross reference of the different plugs along with the part numbers:

Stock heat range:
Colder range:

AC Delco 41-906 (platinum, stock plug)
AC Delco R42LTS

AC Delco Rapidfire 3
Accel 514

AC Delco R44LTS
Autolite 104

Accel 516
Bosch HR8DPX

Autolite 106
Champion RS9YC

Bosch HR9DPX
Motorcraft AGRF42

Champion RS14YC
Nippondenso T20EPR-U

Motorcraft AGRF42
NGK BPR6EFS

Nippondenso T16EPR-U


NGK TR5 (.035 gap)


NGK TR55 (.050 gap)


NGK TR55VX (platinum version)