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Old 01-22-2013, 06:44 PM   #1 (permalink)
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Default Ordered new calipers, different pistons.

Hi guys new member here, been lurking for a while but never got around to joining the forum.

I'm getting ready to do a front brake job. I'll be replacing rotors, calipers, and pads. I got an awesome deal online with autozone so I ordered through them. Well, everything arrived today and as I was unboxing the remanufactured calipers I noticed that the right and left calipers contain different pistons. I triple checked part numbers and everything looks good. It just doesn't seem right to me to use a different piston on each side although I imagine brake pressure would still be equal between the two sides.

I've attached a photobucket link to a picture. The right one is what I believe the piston should be. Let me know if you think I should return one or if this is normal.

Thanks alot,
Anthony


Last edited by Sam; 01-22-2013 at 09:04 PM. Reason: made pic show up in post
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Old 01-22-2013, 07:11 PM   #2 (permalink)
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Should be fine but I would buy the premium calipers from Napa and spend the $$$. The Gold and upper end Napa are what the good shops use for their parts. Good warranty and they will look alike!! Try the Adapt One pad from Napa, best pad I have tried yet for the price. Napa rotors are $40 and good machining on them.
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Old 01-22-2013, 07:53 PM   #3 (permalink)
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Thanks downhill. The calipers are just Ford remanufactured, Duralast C-Max Gold pads, and some Duralast rotors. I'd heard good things about the pads so I figured I'd try them. Hopefully the rotors do ok my present rotors are toast.
Anyone else seen this issue with the pistons before?
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Old 01-22-2013, 09:03 PM   #4 (permalink)
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I didn't notice that when I did my brakes. Mine both looked like the one on the right. I think they will be fine, but that's odd. Maybe from different years? No idea.

Why did you buy new calipers?
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Old 01-22-2013, 10:36 PM   #5 (permalink)
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I ordered new calipers because I believe I have one not releasing causing major rotor warpage. Not knowing if it was pads, rotor, or caliper, causing my issue I just opt to replace it all hopefully saving me a bit of valuable time. Also for the price I figured I'd just replace old with new and while I'm at it check my flexible lines and replace fluid.

Thanks Breeves002 I was assuming it should be like the one on the right, just couldn't remember for sure without going out to pull it apart. Couldn't find any documentation as far as passenger and driver being different either so I figured I'd ask you guys.

Last edited by jumbo_tron; 01-22-2013 at 10:39 PM. Reason: More info
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Old 01-22-2013, 11:45 PM   #6 (permalink)
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The force exerted is equal the the area of the piston. So they should work the same. The one on the left looks like it has a replacement piston installed.

They were "an awesome deal online with autozone" so what do you expect?
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Old 01-23-2013, 03:37 AM   #7 (permalink)
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That would bother me. They are most likely equal and the left one looks bullet proof. Try taking it to a AZ store to exchange for an identical part.
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Old 01-23-2013, 07:48 AM   #8 (permalink)
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Quote:
Originally Posted by behlinla View Post
"an awesome deal online with autozone" so what do you expect?
They were an awesome deal, with coupons and free shipping. This is the first time I've ever had an issue with any Autozone parts I've purchased. My first time ordering through them online, hopefully the brick and mortar will exchange one of them for me so I don't have to send it back.
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Old 01-23-2013, 11:54 AM   #9 (permalink)
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Quote:
Originally Posted by jumbo_tron View Post
This is the first time I've ever had an issue with any Autozone parts I've purchased.
Consider yourself lucky!

Only thing I like about AZ is their brake cleaner.
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Old 01-23-2013, 03:20 PM   #10 (permalink)
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Quote:
Originally Posted by behlinla View Post
Only thing I like about AZ is their brake cleaner.
+1 ^
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