07 Rondo 2.4L Strut/Coil questions - Optima part compatibility - Kia Forum
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post #1 of 7 (permalink) Old 02-16-2017, 04:03 PM Thread Starter
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07 Rondo 2.4L Strut/Coil questions - Optima part compatibility

Hey guys/gals, been lurking for the past couple weeks searching around for more info on the issue that I'm having and decided to register. I've searched pretty thoroughly through the site for the answers that I am looking for but haven't come up with much info, so if it's out there, please forgive me.

Anyway, my brother has an '07 Rondo LX with 2.4L - around 125K miles. He recently went to get an alignment after getting new tires installed and the Tech brought him out to show him a broken coil spring on the front driver side - needless to say, he did not proceed with the alignment.

After searching around I've come up with a few conclusions:
1) This is a somewhat common issue with these vehicles
2) Aftermarket support for the Rondo is definitely lacking - no quickstruts available, nor aftermarket coils
3) OEM coils are pretty darn expensive - especially considering the chance of another break in the future

Considering the miles on the vehicle, I figured he might as well do the front struts while he's at it - i mean, the have to come off to put new coils on anyway. He's definitely not down with paying $1300+ for a shop to do the work, So we'll be doing the work ourselves (I've done struts before and I'm capable of doing it safely)

After some searching around, it looks like Kia has vehicle-specific part numbers for almost everything that I am looking at, even though aftermarket strut/strut part suppliers (Moog, Monroe, Sensen, Autozone, etc.) list common parts with the late 2006-2010 optima - mainly the struts, boots and strut mounts. Combining that knowledge with the fact that the Rondo only weighs about 200lbs more and comes with the same engines as the optima, I'm starting to think that Optima struts and coils will work just fine. The only issue that bothers me is that kia doesn't list any actual useful specs for the coils - dimensions, compression rate, etc.

So that leads to the actual question. If there's anyone out there who works a kia parts dept., junkyard, etc. or anyone who knows these two vehicles - will optima coils work? for that matter, could I use optima quickstruts like the sensens (i know - not the best choice) listed on ebay for $220ish/pair (can't post links yet)? Or even salvaged optima struts/coils? They seem to be a heck of a lot more prevelent in SE Michigan that than Rondos on Car-part. I'd rather not go the sensen route - i don't mind packing the coils (though I'd rather not), but I just wonder about all the other misc. parts that can nickle and dime this all the way up to a $500 project just in parts (mounts, seats, bearings, bushings, etc.) and they're not exactly available at every local parts store....

Any input will be appreciated. FWIW, I've found some salvaged optima struts nearby for $20/each - i may go pick them up just to see if they're the same (though I can't be sure until I've actually pulled the rondo's struts).

I still can't believe how often this happens though - according to the previous owner's maint. records, a coil spring was replaced at 70-something thousand miles.

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post #2 of 7 (permalink) Old 02-16-2017, 07:56 PM
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My 1st spring broke at 88k. and now at 102k another one broke. The roads here in SE MI (salt and potholes) are not friends to the Rondo springs. You did a lot more research than I did. I just know you can't find aftermarket parts. There was one place I found that said they had the springs, but when I looked further, they said they were "universal fit" so I passed.
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post #3 of 7 (permalink) Old 02-16-2017, 09:32 PM Thread Starter
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It's just so darn tempting - especially when i can get a set of Moog springs for nearly half the cost that i'd trust more. Part #81365 is the springs for 06-10 optima and they're $57 each at Rockauto.
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post #4 of 7 (permalink) Old 04-02-2017, 11:46 AM
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I'm just tacking on to this thread to see if anyone has any further suggestions (or if the OP found a solution). I'm in the same situation with our 2007 Kia Rondo LX (V6). Even if we could find the springs separately, I have no means to pack the coils. I don't really have the means for a $1200+ dealer repair either.

If anyone knows of any cross compatibility for quick struts it would be truly appreciated.
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post #5 of 7 (permalink) Old 04-18-2019, 01:13 PM
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Part swap....?

I was hoping someone, somewhere would be able to pop in with an answer.
I am having the same problem!

Maybe you can figure THIS out: Mine is an '09 LX, 4cyl.. NAPA has a PAIR of springs for the 6 cyl. for $88 (online says "does not fit your car"). They have a SINGLE exact for for $129.00. WTF?!

Wouldn't you think that a part that has to hold up more weight would cost more to build/buy?

I just don't get it!

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post #6 of 7 (permalink) Old 04-19-2019, 08:10 PM
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Sometimes with Kia and Hyundai there isn't a clear 3rd party source of springs. Especially for a car that was made only 3 years...
I would investigate further.

For Rondo LX, 2.4L - front shock is 3340084. No Strut-Plus.
For Rondo LX, 2.7L - front shock is 3340084. Strut-Plus is avail - SR4422 (left) and SR4421 (right).
Check other brands of Kia and compare....
Kia Optima - again SR4421/4422
Kia Magentis - again SR4421/4422

I think that V6 engine is heavier and has maybe a stronger spring rate... Sold more than the 4 cyl, hence the prevalence.

Or go OEM: https://www.kiapartsnow.com/

So it goes...

Last edited by SoNic67; 04-19-2019 at 08:34 PM.
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post #7 of 7 (permalink) Old Yesterday, 10:22 PM
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I have replaced the strut assemblies from a 2008 Rondo V6 with monroe asssemblies for a 2008 Optima 4cyl. I assumed that the spring rates would be different considering the weight differences, but the availablility and price drive my decision. It has been almoct a year since and I have yet to regret my decision!
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