How Should Problems with the Transmission Assembly Be Handled on Kia Sedona?

Diagnosis of the automatic transaxle requires detailed knowledge of the transaxle's operation and specialized tools. Troubleshooting must be done with the transaxle mounted in the vehicle and a bad transaxle should not be removed before the vehicle has been diagnosed with the proper tools.

Is overhauling a manual Transmission Assembly on a Kia Sorento a challenging DIY task?

It is a tough job for everyone of you who still have interesting in do-it-yourself, dismantling the manual transmission/transaxle involves the removal of several small parts and the nature of several small parts and the nature of reassembly requires measurements of clearance and potential of adjustment with spacers and snap-rings. Again, a competent person can uninstall and reinstall the unit in cases of problems, however, the overhaul is something that would require the assistance of professional repairers, as the time and costs may take more than the value of a rebuilder which can easily be gotten from the dealer parts departments, or auto parts stores. It possible for inexperienced mechanic to rebuild a transmission/transaxle, but this has to be done with the Special tools and systematically so that nothing is missed. Required for the tasks are internal and external snap-ring pliers, a bearing puller, a slide hammer, a set of pin punches, a dial indicator and maybe a hydraulic, press, wooden or concrete workbench and vise or a transmission/transaxle holder. Recording the process of disassembly is essential-describe how a component is removed, its position in relation to the other elements, and how it is fixed. Moreover, awareness of the faulty part of the equipment can help with the inspection and, replacing certain elements, as some problems are related to specific segments of the equipment.

What steps should be taken to diagnose a problem with the Transmission Assembly on a Kia Optima before undertaking repairs?

In the event of a problem occurring work to determine if the failure is electrical mechanical or hydraulic must first take place before any work can be started in rectifying the problem. Due to the complex nature of its function as well as its structure, diagnosis of the automatic transaxle entails extensive understanding of its functions and structure and the use of testing apparatus that should only be arrived at by the dealer service department or other reputable repair centers. Second a transaxle should not be pulled out for repair when the vehicle is still exhibiting a problem since trouble shooting must usually be done with the transaxle still in the car and with a technician fully equipped to tackle the problem.

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333 Transmission Assemblies found

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Kia TRANSAXLE Assembly-CVT
Part Number: 480002H351
$1564.63 MSRP: $2209.00
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Product Specifications
- Replaced by: 480002H351R
Fits the following Kia Models:
- Soul | 2020-2022 | 2.0L - NU
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Kia Auto Transaxle & Torque/Conventional Assembly
Part Number: 450003BBA0
$823.69 MSRP: $1149.00
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Product Specifications
- Other Name: Automatic Transaxle & Torque Converter Assembly
- Replaced by: 450003BBA0R
Fits the following Kia Models:
- Optima | 2011-2015 | 2.0L - Theta 2
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Kia Auto Transaxle & Torque/Conventional Assembly
Part Number: 450003B875
$823.69 MSRP: $1149.00
You Save: $325.31 (29%)
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Product Specifications
- Other Name: Automatic Transaxle & Torque Converter Assembly
- Replaced by: 450003B875R
Fits the following Kia Models:
- Sorento | 2009-2012 | 2.4L - Theta 2
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Kia Auto Transaxle & Torque/Conventional Assembly
Part Number: 450003BMF0
$823.69 MSRP: $1149.00
You Save: $325.31 (29%)
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Product Specifications
- Other Name: Automatic Transaxle & Torque Converter Assembly
- Replaced by: 450003BMF0R
Fits the following Kia Models:
- Sorento | 2015-2018 | 3.3L - Lambda 2
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Kia Auto Transaxle & Torque/Conventional Assembly
Part Number: 4500026MA1
$823.69 MSRP: $1149.00
You Save: $325.31 (29%)
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Product Specifications
- Other Name: Automatic Transaxle & Torque Converter Assembly
- Replaced by: 4500026MA1R
Fits the following Kia Models:
- Soul | 2014-2016 | 2.0L - NU
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Kia Auto Transaxle & Torque/Conventional Assembly
Part Number: 450003BKH2
$823.69 MSRP: $1149.00
You Save: $325.31 (29%)
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Product Specifications
- Other Name: Automatic Transaxle & Torque Converter Assembly
- Replaced by: 450003BKH2R
Fits the following Kia Models:
- Sorento | 2013-2014 | 2.4L - Theta 2
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Kia Auto Transaxle & Torque/Conventional Assembly
Part Number: 450003BER0
$823.69 MSRP: $1149.00
You Save: $325.31 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Automatic Transaxle & Torque Converter Assembly
- Replaced by: 450003BER0R
Fits the following Kia Models:
- Sorento | 2009-2012 | 2.4L - Theta 2
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Kia Manual Transmission Assembly
Part Number: 4300039954
$3046.80 MSRP: $4493.80
You Save: $1447.00 (33%)
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Product Specifications
- Other Name: Transmission Assembly-Manual; Transaxle
- Replaces: 4300039440, 4300039951
Fits the following Kia Models:
- Sportage | 2005-2010 | High Grade, Middle Grade | 2.0L, 2.0L - Beta
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Kia Auto Transaxle & Torque/Conventional Assembly
Part Number: 4500039667
$700.20 MSRP: $972.00
You Save: $271.80 (28%)
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Product Specifications
- Other Name: Automatic Transaxle & Torque Converter Assembly
- Replaced by: 4500039667R
Fits the following Kia Models:
- Spectra | 2003-2006 | High Grade, Middle Grade | 2.0L
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Kia Automatic Transmission/Transaxle Assembly
Part Number: 450004GDF0
$5543.07 MSRP: $8175.62
You Save: $2632.55 (33%)
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Product Specifications
- Other Name: Ata & TQ/CONV Assembly; Transaxle
Fits the following Kia Models:
- K5 | 2021-2024 | 1.6L-Gamma-II
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Kia TRANSAXLE Assembly-CVT
Part Number: 480002H300
$1564.63 MSRP: $2209.00
You Save: $644.37 (30%)
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Product Specifications
- Replaced by: 480002H300R
Fits the following Kia Models:
- Forte | 2019-2024 | 2.0L - NU
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Kia Automatic Transmission/Transaxle Assembly
Part Number: 450004GDF5
$1853.04 MSRP: $2621.00
You Save: $767.96 (30%)
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Product Specifications
- Other Name: Ata & TQ/CONV Assembly
- Replaced by: 450004GDF5R
Fits the following Kia Models:
- K5 | 2021-2024 | 1.6L-Gamma-II
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Kia Auto Transaxle & Torque/Conventional Assembly
Part Number: 450004GBF0
$922.48 MSRP: $1290.00
You Save: $367.52 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Ata & TQ/CONV Assembly
- Replaced by: 450004GBF0R
Fits the following Kia Models:
- Sorento | 2019-2020 | 3.3L - Lambda 2
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Kia Auto Transaxle & Torque/Conventional Assembly
Part Number: 450003B740
$823.69 MSRP: $1149.00
You Save: $325.31 (29%)
Product Specifications
- Other Name: Automatic Transaxle & Torque Converter Assembly
- Replaced by: 450003B740R
Fits the following Kia Models:
- Optima | 2014-2015 | 2.4L - Theta 2
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Kia Auto Transaxle & Torque/Conventional Assembly
Part Number: 450003B870
$823.69 MSRP: $1149.00
You Save: $325.31 (29%)
Product Specifications
- Other Name: Automatic Transaxle & Torque Converter Assembly
- Replaced by: 450003B870R
Fits the following Kia Models:
- Sorento | 2009-2012 | 2.4L - Theta 2
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Kia Trans Assembly-Shipping
Part Number: 0K2A619090
Product Specifications
- Replaced by: RK2A619090T
Fits the following Kia Models:
- Sephia | 1997-2001 | Low Grade, Middle Grade | 1.5L, 1.8L
- Spectra | 2000-2004 | Low Grade, Middle Grade | 1.8L
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Kia Auto Transmission As
Part Number: 4500039145
Product Specifications
- Other Name: Automatic Transaxle & Torque Converter Assembly
- Replaced by: 4500039145R
Fits the following Kia Models:
- Sportage | 2005-2006 | High Grade, Middle Grade | 2.7L
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Kia Auto Transmission As
Part Number: 4500039141
Product Specifications
- Other Name: Automatic Transaxle & Torque Converter Assembly
- Replaced by: 4500039140R
Fits the following Kia Models:
- Sportage | 2005-2010 | High Grade, Middle Grade | 2.7L, 2.7L - Delta
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Kia Auto Transmission
Part Number: 4500023340
Product Specifications
- Other Name: Automatic Transaxle & Torque Converter Assembly
- Replaced by: 4500023340R
Fits the following Kia Models:
- Spectra | 2003-2009 | High Grade, Middle Grade | 2.0L, 2.0L - Beta
- Spectra SX | 2007-2009 | 2.0L - Beta
- Spectra5 SX | 2007-2009 | 2.0L - Beta
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Kia Auto Transaxle & Torque/Conventional Assembly
Part Number: 450003A241
Product Specifications
- Other Name: Automatic Transaxle & Torque Converter Assembly
- Replaced by: 450003A241R
Fits the following Kia Models:
- Rondo | 2006-2011 | 2.7L - MU

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1-20 of 333 Results

Kia Transmission Assembly Parts Questions & Experts Answers

Auto Transaxle & Torque/Conventional Assembly
450003A500
Q:
How Should Problems with the Transmission Assembly Be Handled on Kia Sedona?
Posted by Paulo S.
A:
Diagnosis of the automatic transaxle requires detailed knowledge of the transaxle's operation and specialized tools. Troubleshooting must be done with the transaxle mounted in the vehicle and a bad transaxle should not be removed before the vehicle has been diagnosed with the proper tools.
Answered by Kia Parts Specialist Nate / Feb 11, 2025
Auto Transaxle & Torque/Conventional Assembly
450003BER0
Q:
Is overhauling a manual Transmission Assembly on a Kia Sorento a challenging DIY task?
Posted by Ramon A.
A:
It is a tough job for everyone of you who still have interesting in do-it-yourself, dismantling the manual transmission/transaxle involves the removal of several small parts and the nature of several small parts and the nature of reassembly requires measurements of clearance and potential of adjustment with spacers and snap-rings. Again, a competent person can uninstall and reinstall the unit in cases of problems, however, the overhaul is something that would require the assistance of professional repairers, as the time and costs may take more than the value of a rebuilder which can easily be gotten from the dealer parts departments, or auto parts stores. It possible for inexperienced mechanic to rebuild a transmission/transaxle, but this has to be done with the Special tools and systematically so that nothing is missed. Required for the tasks are internal and external snap-ring pliers, a bearing puller, a slide hammer, a set of pin punches, a dial indicator and maybe a hydraulic, press, wooden or concrete workbench and vise or a transmission/transaxle holder. Recording the process of disassembly is essential-describe how a component is removed, its position in relation to the other elements, and how it is fixed. Moreover, awareness of the faulty part of the equipment can help with the inspection and, replacing certain elements, as some problems are related to specific segments of the equipment.
Answered by Kia Parts Specialist Philip / Feb 27, 2026
Manual Transmission Assembly
4300024320
Q:
What steps should be taken to diagnose a problem with the Transmission Assembly on a Kia Optima before undertaking repairs?
Posted by Jacqueline P.
A:
In the event of a problem occurring work to determine if the failure is electrical mechanical or hydraulic must first take place before any work can be started in rectifying the problem. Due to the complex nature of its function as well as its structure, diagnosis of the automatic transaxle entails extensive understanding of its functions and structure and the use of testing apparatus that should only be arrived at by the dealer service department or other reputable repair centers. Second a transaxle should not be pulled out for repair when the vehicle is still exhibiting a problem since trouble shooting must usually be done with the transaxle still in the car and with a technician fully equipped to tackle the problem.
Answered by Kia Parts Specialist Austin / Jul 04, 2023