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C4 front 12" brakes need to be rebuilt. What part #s?

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Old 10-12-2022, 01:06 PM
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Car: 1987 Iroc
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C4 front 12" brakes need to be rebuilt. What part #s?

Hey everyone, I have an EBMiller C4 kit from 15 years ago and the car has sat a LOT. I want to rebuild the calipers, new pads, and new rotors.

Does anyone know the Part #s or make/model they are off of to help me find the right parts?

i have tried searching and reaching out to ebMiller, to no avail yet.


Thank you


Last edited by NufNuffZ28; 10-13-2022 at 09:26 AM. Reason: non HD
Old 10-12-2022, 04:00 PM
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Re: C4 HD brakes need to be rebuilt. What part #s?

You mentioned HD so I assume you have the 13 inch rotors. I would messure to make sure. standard brakes were 12.1 inches Hd was 12.99 inches . They were used on 1995 - 96 corvettes with the HD opption .
Old 10-13-2022, 08:40 AM
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Re: C4 HD brakes need to be rebuilt. What part #s?

Originally Posted by kestell123
You mentioned HD so I assume you have the 13 inch rotors. I would messure to make sure. standard brakes were 12.1 inches Hd was 12.99 inches . They were used on 1995 - 96 corvettes with the HD opption .
OK, I will measure them now.

IIRC the calipers are the front calipers from the same car and the rotors from the rear(something like that). The calipers look like this...

https://www.zip-corvette.com/88-96-r...vD_BwE#258=966
Old 10-13-2022, 09:08 AM
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Re: C4 HD brakes need to be rebuilt. What part #s?

You were right! 12" rotors...





Old 10-13-2022, 09:27 AM
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Re: C4 HD brakes need to be rebuilt. What part #s?

Now that I know which brakes I have, I can't find new calipers, ARRRRH. Any options someone has used?


Thank you!
Old 10-13-2022, 10:03 AM
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Re: C4 front 12" brakes need to be rebuilt. What part #s?

Good luck, I had a time finding mine when I swapped out my C4s for C4HDs. Found them locally but had to order them in.
Old 10-13-2022, 10:20 AM
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Re: C4 front 12" brakes need to be rebuilt. What part #s?

I'm assuming they don't work anymore? That's surprising. I would think some fresh fluid, a bleed and greasing the slide pins then they'd be good to go, even after 15 years.
Old 10-13-2022, 02:08 PM
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Re: C4 front 12" brakes need to be rebuilt. What part #s?

Originally Posted by RedLeader289
I'm assuming they don't work anymore? That's surprising. I would think some fresh fluid, a bleed and greasing the slide pins then they'd be good to go, even after 15 years.


I'll be honest. One is hanging, I've been lazy and was just going to buy reman ones, plus they look so old. Maybe I will work on them some. Thank for the motivation, haha
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Old 10-13-2022, 03:22 PM
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Re: C4 front 12" brakes need to be rebuilt. What part #s?

15 years old is nothing to worry about. There are probably a lot of 3rdgens still on the road with their 30-40 year old calipers, rotors and hoses. I'd imagine all of the upgrade parts from Ed were either new or remanufactured "new" at the time, right? So if you're not changing brake systems/upgrading to larger, then your C4 12" brakes should be fine. Just clean 'em up.

Rock Auto lists a lot of rebuild kits for C4 calipers, but if yours aren't leaking, then there's probably no need to rebuild them. Clean them with Aluminum Brightener from NAPA, and they'll look brand new. Paint the abutment brackets to make them look new. Clean and grease the guide pins. Flush the system until fresh fluid is coming out of each caliper. Maybe some new rotors and pads, which won't be expensive.



C4 rear calipers off of a 1995 Corvette, before and after Aluminum Brightener:

Old 10-13-2022, 03:40 PM
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Engine: 357 Single plane and a Ysi vortech
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Axle/Gears: 3.50 9"
Re: C4 front 12" brakes need to be rebuilt. What part #s?

Fine, I'll put in some elbow grease, HAHA. This is for my LS, turbo Iroc. They are not leaking, I do feel like the front passenger one is hanging(or may be a lot of rust).
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