Creative Steel - rear differential bushing - red vs. black?

1440 Views 5 Replies 3 Participants Last post by nxlr8, Jan 7, 2022

nxlr8

Discussion Starter · Nov 17, 2021

I need to replace my rear differential bushing. Discontinued part, GM Part # 19121910.

From reading your topics of the past, I was pointed towards Creative Steel's solution.
04-07 CTS-V Rear Differential Bushing - Creative Steel

What can anyone tell me about the real-world differences between the Red vs. Black? Beyond the standard, "Black is for a Daily Driver and is similar to OEM, Red is stiffer and might be louder". Not looking for install comments, more what to expect from the two different products.

Pro's and Con's of each?

What other options would I have?

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AAIIIC

· #2 · Nov 17, 2021

The red, being firmer, will transmit some more rear diff noise into the car. It would be awfully hard to quantify how big a difference it really makes. And the rear diff is mounted to the rear cradle, which has 4 big rubber mounts to mount it to the chassis, so it's not like the diff noise would be directly transmitted into the car.

With that said, if you're at all concerned about NVH, then I would go with the black, just to play it safe.

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nxlr8

Discussion Starter · #3 · Nov 18, 2021

What is the benefit of the stiffer Red? What are the Pro's?

My car is a garage queen... see's less than 1,000 miles a year... never tracked or driven hard. I'm a slow old man who likes quick cars. LOL

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CSIMME01

· #4 · Nov 18, 2021

The firmer Red bushing will reduce the movement of the rear diff relative to the rear cradle. This would result in a slightly more planted feel during spirited driving. The trade off would be increased noise transmitted from the diff to the rear cradle. That could increase the cabin noise level.
Based on your description of your driving style you would not gain anything from the Red except the bragging rights of having it. IMHO

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nxlr8

Discussion Starter · #5 · Nov 18, 2021

CSIMME01 said:
The firmer Red bushing will reduce the movement of the rear diff relative to the rear cradle. This would result in a slightly more planted feel during spirited driving. The trade off would be increased noise transmitted from the diff to the rear cradle. That could increase the cabin noise level.
Based on your description of your driving style you would not gain anything from the Red except the bragging rights of having it. IMHO

Perfect. I appreciate the advice.

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nxlr8

Discussion Starter · #6 · Jan 7, 2022

So, to further confuse me...I am in no way "smart" with this stuff... Cadillac did some much overdue recall work on the car. They said that I need to replace both the Rear Differential Front Bushings, Qty: 2, Part # 25742459... I'm assuming this is NOT the same one as the Creative Steel bushing, as their site states that there is only 1 per car.

Advice... Should I order 2 of the 25742459 bushings online, and then get the Creative Steel bushing as well... knock out all three at once?

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