Anyone know offhand what the stock # for a K&N air filter is for the 05 GXP

For the drop-in or the cone filter?

The drop-in for the 2005 Bonneville 3.8L is #33-2141-1

There'* no drop-in listed for the GXP 4.6L N*

Here'* the K&N site:

K&N Filters

My gxp had a K&N drop in filter....think it was a seville part number but not sure.

The part number for the K&N dropin filter is 33-2063, Jet Black, welcome to the club, been a little busy and havent been to introduction section lately. If nobody answers a question right away, the Forum has an excellent search engine. Just type in the keyword and choose the applicable forum section and if it'* here, the search query will list the thread it'* in. Just click on the search button at the top of the page.

You should fill out the signature box in profile and list your car year, trim level, and color. It will help people help you when you ask a question. If you have any questions about it or how to post a pic of your car in it... I would be more than happy to help you

I have installed the replacement drop in on my 05 GXP the part numbers are NAPA BK 7354305 KN 12276-1 iTS BEEN IN FOR APPOX 3K AND DID NOTICE AN IMPROVEMENT IN THROTTLE RESPONSE

Hemieater , was that a direct listing for the GXP( From NAPA I presume), I got my number from another member (ex member since he invoked the Wrath of Will) and I also believe it'* actually for a Caddy.

The numbers are right off the box that was purchased from NAPA All Numbers on Box
NR 33-2063-1 SKQ BK.735-4305, peeling away NAPA overstickers reveals KN 12276-1 has been installed for over 3K, if those numbers provide no luck let me know, I will open airbox and get numbers directly off the filter plate.
Regards

Cool Your first number kinda threw me off. The first number set in your second post matched mine and I went to the K&N site as well. They finally have the GXP listed in the group that takes the 33-2063-1 ( that is the actual K&N part number) It fit'* a multitude of GM applications, including some Caddys, Auroras, Regals, GP'* and Lumina'*.

http://www.knfilters.com/search/appl...Prod=33-2063-1

And here is how this K&N filter FINALLY got added to the 'list of applications" as the filter for the 2004-05 Pontiac Bonneville GXP...

After a very disappointing phone call to K&N and a couple emails back and forth that were pretty disappointing too regarding how K&N handled my contacts and information (especially since I had noted that I have been a K&N customer since 1983) that I was trying to provide them with - I received this as part of their final reply. I must also note, there was a disclaimer included with the email as well...WTF?!

Here is the pertinent info...

Through your persistent efforts, we decided to dig deeper into this issue, and send a product development technician back to Pontiac to investigate the situation. A Pontiac dealer in the immediate local area of K&N was enthusiastic to help us out, and brought some new information to the table which we were not aware of at the time our previous fit checks were completed. The 2004 and 2005 Bonneville GXP models do in fact use the same airbox as the Cadillac Deville, and therefore use the same replacement air filter, part number 33-2063-1. Here is the data we were provided for the Bonneville GXP:

Airbox base: GM# 25733809

Airbox lid: GM# 10357527

OE filter: GM# 25099149

These part numbers cross directly to the Cadillac Deville with the 4.6L V8. The new application information will soon be added to our website. Thank you for remaining a loyal K&N supporter. We hope you will for many years to come.

uh??? ??? If you would read the entire post instead of just the header, you'd see that this stuff was done long ago and saved yourself some trouble. The GXP has been listed on the K&N site since I checked 6 months....on the site I posted 2 days previously.. I call BS o the rest. Please tell Me just what makes your motor 295 Hp