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Discussion Starter · #1 ·
I removed left side half shaft and transmission output seal for slight oil leak. Aftermarket oil seal is high interference with metal OD and will not seat in transmission case. Anyone with experience, tips or tricks? Exploded view of this transmission for correct OEM P/N?

Is this manual transmission shared with Kia Rio, Soul, Hyundai Accent/Veloster/Elantra?

Thanks for your help!
 

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2021 Forte GT w/GT2, Currant Red, SXTH Element Intercooler Kit, Evilla Exhaust, Takeda S2 Intake
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WOW...I haven't had this much trouble looking for a part before!

This is from rockauto.com:

Brown Grey Beige Font Rectangle


2012 KIA FORTE 2.0L L4 Main / Output Shaft Seal | RockAuto

I can't find the part number on the online Kia sites...might need to call your local Kia parts department to get the number.

Good Luck!
 

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Discussion Starter · #4 ·
Thanks to all! I found it on Kiapartsnow with my VIN.

4311939020 replaced by 4311939070. Looks like it fits a wide variety of Korean cars, search yields many Hyundais too!

Sure hope the OEM part installs w/o too much trouble and not something for a machine shop with a press, Ha HA!

Anybody with experience installing this thing under the car on jack stands with gear oil dripping all over?
 

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Discussion Starter · #5 ·
Turns out aftermarket seal from O'rielly (National Oil Seal - see photo) OD is 0.3 mm (0.012") larger than OEM. Standard interference for seal is 0.004", so if the OEM seal is 0.004" larger than bore, not a prayer the aftermarket seal will fit.

Ordered OEM seal from Rock Auto - never used them before.

Will post outcome, enjoy photos...
 

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2021 Forte GT w/GT2, Currant Red, SXTH Element Intercooler Kit, Evilla Exhaust, Takeda S2 Intake
Joined
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5,142 Posts
Turns out aftermarket seal from O'rielly (National Oil Seal - see photo) OD is 0.3 mm (0.012") larger than OEM. Standard interference for seal is 0.004", so if the OEM seal is 0.004" larger than bore, not a prayer the aftermarket seal will fit.

Ordered OEM seal from Rock Auto - never used them before.

Will post outcome, enjoy photos...
I've ordered from rockauto for BMW parts - like axles, brakes and seals...all were perfect fit!
 

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'21 Forte FE 6-Speed
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705 Posts
Turns out aftermarket seal from O'rielly (National Oil Seal - see photo) OD is 0.3 mm (0.012") larger than OEM. Standard interference for seal is 0.004", so if the OEM seal is 0.004" larger than bore, not a prayer the aftermarket seal will fit.

Ordered OEM seal from Rock Auto - never used them before.

Will post outcome, enjoy photos...
I've gotten RockAuto stuff for my buddy's Cobalt, and the stuff went in great
 

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Discussion Starter · #9 ·
OEM Seal is slightly smaller. Recommend using OEM here. Trick is correct install technique (put the hammer away). Seal MUST be pressed in evenly and no simple task on transaxle under car. 2" PVC coupler fits the seal outer ring nice, see ******* seal press photos. This did the trick, Koup finally returned to service!

Also some background - car is 2012 with 60K miles purchased used. Car has new clutch @57K, I dunno how you can burn up a clutch that fast, so that shaft has been out before. Changed transaxle fluid - Mobil 1 full synthetic 80-90 wt and the seal started leaking. That stuff is pretty little plastic bottles and the oil more expensive than vodka?!?

Went back to dino oil 80-90 wt, Lowe's sells 1 gallon and 2.5 gallon jugs, much cheaper than Autozone and much thicker.

Thanks for all the help fellas!

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