J55 brake rotors

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Feb 12, 2019 | 06:38 PM

jv_72_jv

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J55 brake rotors

Anyone know what the difference is between the left and right front 13” rotors ? Parts places list two different part numbers for left and right. I don’t see the difference. I want to use NOS rotors and can’t find both left and right, just right. One guy has three 10257632 RH rotors available and says they fit left and right sides.

John

Last edited by jv_72_jv; Feb 12, 2019 at 06:39 PM.

Feb 12, 2019 | 08:59 PM

ChumpVette

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Originally, the rotors were cast with directional vanes. Now everybody is cheap and just does one rotor to be used right or left.

Feb 12, 2019 | 09:10 PM

jv_72_jv

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Quote:

Originally Posted by ChumpVette

Originally, the rotors were cast with directional vanes. Now everybody is cheap and just does one rotor to be used right or left.

Thanks for the reply! I figured that was the case even though the aftermarket parts catalogs list left and right separately. I wouldn’t over think it and just buy some ACDelcos (probably China).

Thanks,
John

Feb 12, 2019 | 10:27 PM

65Z01

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If drilled/slotted orientation might make a difference.

Feb 12, 2019 | 10:41 PM

WVZR-1

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10257632 is a RH J55 only. Yes it could be used on either side but if it's actually that # it's RH 'orientation'. If it were an actual GM 10257632 it would/should also have 'black' hats and meant for GS etc.

J55 correct 'orientation' should be an easy find!!! Very easy!!

Last edited by WVZR-1; Feb 12, 2019 at 10:45 PM.