Performance Exhaust GM part Number

[GBKris]

Does anyone know the difference between the two GM part numbers 19433760 and 84460754? I have a 2022 Yukon Denali and looking to upgrade my exhaust system. Both show up when I enter my VIN.

 

[WICKEDOWESIX]

Does anyone know the difference between the two GM part numbers 19433760 and 84460754? I have a 2022 Yukon Denali and looking to upgrade my exhaust system. Both show up when I enter my VIN.

19433760 has a front resonator just before the muffler and is branded as Borla

84460754 is GMPP (made by Borla) and has the resonators at the rear near the tail pipes

 

[BonesDT]

19433760 has a front resonator just before the muffler and is branded as Borla

84460754 is GMPP (made by Borla) and has the resonators at the rear near the tail pipes

Thanks. I too am faced with this decision.

So what is the real world difference between these 2 configurations?

Also, how do both these part numbers sold through GMC, differ from the aftermarket systems sold directly from Borla?

I’ve already contacted Borla and asked them these questions and their response was simply:
“84460754 is not made by Borla.”

 

[Blackcar]

If your putting on new vehicle that is under warranty I would ask them Dealer and make sure if they install warranty on vehicle will stay intact.
If not under warranty aftermarket might be a good alternative.

 

[H1Chester]

If your putting on new vehicle that is under warranty I would ask them Dealer and make sure if they install warranty on vehicle will stay intact.
If not under warranty aftermarket might be a good alternative.

Legally they can not void your warranty for a cat back. However, if you go long tube headers and tune your PCM then yes your warranty will likely be voided. I HATE this myth that is all over forums. See Magnuson Moss Warranty Act.

 

[Blackcar]

If they can prove that whatever was added to vehicle is causing the active problem with vehicle under warranty, they will use it to be denied repair.
Sure, you can fight it with Magnuson Moss Warranty Act. but you're going probably have to get attorney.

 

[H1Chester]

I’m just saying that I’ve NEVER had an issue with a warranty not being honored. Even with full bolt ons.

 

[BonesDT]

So I squeezed a tad bit more info out of Borla customer service. They told me GM 19433760 would be more similar to Borla's 140859 "S-Type" sound level (the louder one).

So to re-cap, the "Borla" options are:

GM system - has x1 resonator before muffler; Borla denies they make this
84460754 (has "GMC" etched in chrome tips) MSRP $2395.00

GM "by Borla" systems - has x2 resonators after muffler; probably has "Borla" etched in tips instead
19433760 (chrome tips) MSRP $2495.00
19433762 (black chrome tips) MSRP $2495.00

Borla Touring systems - doesn't appear to have any resonators per photos
140858 (chrome tips) MSRP $1931.99
140858BC (black chrome tips) MSRP $2036.99
140858CF (carbon fiber tips) MSRP $2999.99

Borla S-Type systems - same no resonators
140859 MSRP $1871.99
140859BC MSRP $1999.99
140859CF MSRP $2554.99

 

[Scrappydoo1956]

So I squeezed a tad bit more info out of Borla customer service. They told me GM 19433760 would be more similar to Borla's 140859 "S-Type" sound level (the louder one).

So to re-cap, the "Borla" options are:

GM system - has x1 resonator before muffler; Borla denies they make this
84460754 (has "GMC" etched in chrome tips) MSRP $2395.00

GM "by Borla" systems - has x2 resonators after muffler; probably has "Borla" etched in tips instead
19433760 (chrome tips) MSRP $2495.00
19433762 (black chrome tips) MSRP $2495.00

Borla Touring systems - doesn't appear to have any resonators per photos
140858 (chrome tips) MSRP $1931.99
140858BC (black chrome tips) MSRP $2036.99
140858CF (carbon fiber tips) MSRP $2999.99

Borla S-Type systems - same no resonators
140859 MSRP $1871.99
140859BC MSRP $1999.99
140859CF MSRP $2554.99

I have the Borla 140557 Touring on a 2019 Tahoe. Currently the Touring is the only available option from Borla for 2015 thru 2020. This has welded on chrome tips. No visible resonators. It does drone between 1700 and 2000 RPM. I have talked to Borla about the drone and they are waiting for me to send them a recording of said drone. They said it could be defective. They also told me that the system is designed with the resonator built into the muffler and that is how they achieve zero drone. I'm not sure if this is BS or not. I will send them the recording and see what they say.

 

[BrotriX]

So I squeezed a tad bit more info out of Borla customer service. They told me GM 19433760 would be more similar to Borla's 140859 "S-Type" sound level (the louder one).

So to re-cap, the "Borla" options are:

GM system - has x1 resonator before muffler; Borla denies they make this
84460754 (has "GMC" etched in chrome tips) MSRP $2395.00

GM "by Borla" systems - has x2 resonators after muffler; probably has "Borla" etched in tips instead
19433760 (chrome tips) MSRP $2495.00
19433762 (black chrome tips) MSRP $2495.00

Borla Touring systems - doesn't appear to have any resonators per photos
140858 (chrome tips) MSRP $1931.99
140858BC (black chrome tips) MSRP $2036.99
140858CF (carbon fiber tips) MSRP $2999.99

Borla S-Type systems - same no resonators
140859 MSRP $1871.99
140859BC MSRP $1999.99
140859CF MSRP $2554.99

I think the 2 GM systems are backwards with regard to the resonators and name etching.

On the topic of resonators… what are the differences in the driving experience of resonators before the muffler vs after? Intuitively, it would seem that the resonator should go before the muffler. But even the stock system has them after.