[Mcardenal]

OK
My fronts and rears just came in.
Everything looks A-OK
They came sealed in what looks like the original AC Delco/Brembo packaging.

[Tabloma]

Note your pad says FF A15, in my post regarding ZL1 vs ZL1-1LE, my original ZL1 pads say FF A17 and the ZLE says FF A18. I am pretty sure thats the compound number still try to verify that

[Mcardenal]

Originally Posted by Tabloma

Note your pad says FF A15, in my post regarding ZL1 vs ZL1-1LE, my original ZL1 pads say FF A17 and the ZLE says FF A18. I am pretty sure thats the compound number still try to verify that

Thanks for the input.
Did a little digging and it appears that Part# 23337277 is an older part number and is now replaced by Part#23399101. Both part numbers show as compatible with the CTS-V/ZL1..??
As you suggested, going to have to try to figure out how different they are (if any).

[Can'tHave2MuchHP]

Originally Posted by Mcardenal

Thanks for the input.
Did a little digging and it appears that Part# 23337277 is an older part number and is now replaced by Part#23399101. Both part numbers show as compatible with the CTS-V/ZL1..??
As you suggested, going to have to try to figure out how different they are (if any).

Jumped on GM Parts real quick to check (Dealer only tool) and yes, 23337277 is discontinued/old part number. Replaced by the 23399101 you listed. No info on if there's a design or performance change, it could be that they just changed the numbers.

The prices given in this thread are very good at ~$220 front/$80 rear. That's basically wholesale cost for an authorized GM Parts dealer.

Current OEM ZL1/CTS-V brake pad part numbers:
89047744 - Rear
23399101 - Front

[Tabloma]

I spoke to a guy at Hawk tech dept. He said Brembo is super secretive about their compounds, and he has been to Brembo in Italy several times. He said the best he could compare it to would be a Hawk pad, a DTC , 60, 70, or 80, the 90 is what they use on a cup car at a track like Martinsville

[nicktechla]

I just ordered on GMPartsDirect. I think these are the right numbers

23399101 Front Pads $233.69
89047744 Rear Brake Pads $85.49

[philpacs]

Great info! Question what kind of mileage are you guys out of stock pads. I'm getting squealing now, after three track days and 10K miles. Is that normal and time to replace?

[Badmojo]

Originally Posted by philpacs

Great info! Question what kind of mileage are you guys out of stock pads. I'm getting squealing now, after three track days and 10K miles. Is that normal and time to replace?

The pads will squeal if there is a lot of dust or a heavy transfer layer on the rotors. Inspect the pads and rotors, then clean everything with a healthy spraying of brake cleaner. It is most likely normal.

I replaced my front pads with 4-5mm remaining thickness after 8 track days and 5000 miles. Rears are still in after 10 track days and 6000 miles. Factory pads have 9 mm friction material thickness new.

[RUQWIKR]

J6H (17+CTS-V, 16+CTS-V): GM / Delco PN's 2339910 / 171-1192 front, 89047744 / 171-0882 rear

They are stamped FER HP1000 at the top (Ferodo HP1000 compound).

[Tabloma]

Everything on yours are exactly like what came off of my ZLE except where yours says "661" Mine says"585". Even the bar code tag numbers are identical.

Not sure what those 661 and 585 mean maybe a date code or batch number

[Mcardenal]

Finally getting around to changing the brake pads before i head to the track this coming weekend. However, i noticed the front pads are similar but not the same. It appears as though the slightly older part number pads has a smaller surface area..??


I still have about 7mm left on the original ones so I'm thinking i will just run them and wait for some feedback from you guys.

[Tabloma]

I believe I have the original set off my Zle if you are interested, on;y a couple hundred street miles, maybe less 175.00 for front and rear shipped

[SFV1LE]

Originally Posted by Tabloma

I believe I have the original set off my Zle if you are interested, on;y a couple hundred street miles, maybe less 175.00 for front and rear shipped

These are OEM F/R Brembo pads off a 2018 ZL1 1LE?

Very interested, can you post a pic?

Thanks!

[BlueinTN]

Whats the FMSI part numbers? Usually its a D XXXX



its a much better way to reference brake pads then factory part numbers.