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Rotors 2003 blazer

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Old May 23, 2022 | 10:58 AM
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Amber Seng's Avatar
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Default Rotors 2003 blazer

How to I know if I need the rear 2.87 or 3.75 rotors on my 2003 Chevy blazer 4 wheel drive . It shows both size options and I don't know which one I need.
 
Old May 23, 2022 | 05:41 PM
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Where are you looking?

Rock Auto normally has pretty good application information. If you really get stuck, you can look up what the GM part number would be at a GM parts website and then try to match that to aftermarket ones.
 
Old May 23, 2022 | 08:58 PM
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Originally Posted by Amber Seng
How to I know if I need the rear 2.87 or 3.75 rotors on my 2003 Chevy blazer 4 wheel drive . It shows both size options and I don't know which one I need.
That refers to the overall height if you lay the rotor down flat. I believe the taller one is for the parking brake shoes that are inside the "drum" part of the rotor and the shorter one is for parking brakes that are built into the caliper, but don't quote me on it.
 
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