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Old 08-18-2017, 04:15 PM
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Coil Spring Isolator Question

I am going to be under the Rubicon either this weekend or next. While down there, I was going to change out the spring isolators (insulators). I can find the rubber ones from Mopar, and a rubber aftermarket one from Crown. I figured that if I am going to the trouble I may as well use polyurethane. When I go to the local auto parts store websites they list the spring isolators as universal, and then proceed to give me 28 options all with different dimensions. So I don't know what to get. Or, should I just stick with the rubber type (I just know the rubber ones may dry out and crack over time.) I am not looking for any lift. Can anyone give me some guidance on what I need to buy/order?

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Old 08-18-2017, 08:20 PM   #2
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Why are you changing the isolators? Based on the model year of your rig there shouldn't be anything wrong with them unless they suffered physical damage.

I think you will be happier with OEM or Crown rubber isolators. The poly isolators have been known to introduce squeaks and I have read reports of the edge of the top coil digging into the poly isolators and damaging them.
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Old 08-18-2017, 09:50 PM   #3
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Yep, stay with factory isolators. They are proven to hold up to the springs... Aftermarket isolators have been know to crack under the pressure of the spring.
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Old 08-19-2017, 12:18 AM
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Thank you gents, that's what I needed to know!
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