2003 Spark plug confusion

[danielschudel]

What does this from the 2003 owner's manual mean?

AWSF-32PP** "*** If any spark plug needs to be removed for inspection, it must be re-installed in the same cylinder. Cylinders No.1, 2 and 3 have a “PG” suffix. Cylinders No. 4, 5 and 6 have a “P” suffix. If any spark plug needs to be replaced, use only spark plugs with the service part number suffix letters “PP” as shown on the engine decal."

Does that mean there is AWSF-32PP for cylinders 4-6? And AWSF-32PG for cylinders 1-3?

I'm finding plug interchange numbers. But nothing about different plugs for cylinders 1-3 vs 4-6.

 

[2011Supercab]

I don't remember which one is which, But one had a platinum tip and the other had a platinum ground strap.

Just use double platinum on both sides and you will be fine.

 

[pjtoledo]

it's a waste-spark-system. all plugs fire once per crank revolution.
the coil pack has 3 coils inside, each fires 2 plugs at once.
in simple terms the coil sits between 2 plugs, it pulls power from one and pushes power to the other simultaneously.
that means the current flows opposite between the banks.
the factory to save money put the platinum on just one side of each plug, ground for one bank, center for the other.
most replacements have platinum/iridium on both.

 

[danielschudel]

Thanks for the info folks.

I pulled out plugs 4/5/6 and they are double iridium Bosch 9605. Thanks previous owner!