How do you remove and install an alternator on Kia Optima?

Disconnect the cable from the negative battery terminal. For 2001 through 2006 four-cylinder models, disconnect the electrical connectors from the alternator. Loosen the lock bolt on the upper alternator adjusting mount and the lower mount bolt. Turn the adjusting boll counterclockwise to release tension on the drivebelt. Remove the drivebelt. Remove the two alternator mounting bolts and remove the alternator. For all other models, remove the drivebelt. Note: Access is very limited on these models. It will be necessary to remove various components including the lower engine splash shield to gain access. These components vary from model to model. Disconnect the electrical connectors from the alternator. Remove the alternator mounting fasteners and remove the alternator. Installation: If you're replacing the alternator, take the old alternator with you when purchasing a replacement unit. Make sure that the new/rebuilt unit is identical to the old alternator. Look at the terminals - they should be the same in number, size and locations as the terminals on the old alternator. Finally, look at the identification markings they will be stamped in the housing or printed on a tag or plaque affixed to the housing. Make sure that these numbers are the same on both alternators. If the replacement alternator doesn't have a pulley installed, you may have to switch the pulley from the old unit to the replacement unit. When buying a new or rebuilt alternator, ask about the shop's policy regarding pulley swapping. Some shops will perform this service for free. Installation is the reverse of removal. Adjust the drivebelt tension on 2005 and earlier 2.4L four-cylinder models only. Check the charging voltage to verify that the alternator is operating correctly.

Genuine Kia Optima Alternator

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18 Alternators found

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Kia Optima Generator Assembly
Part Number: 3730025201
$255.31 MSRP: $356.87
You Save: $101.56 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Replaced by: 3730025201RU
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2006-2010 Kia Optima | 2.4L - Theta 2, 2.4L - Theta FF | Sedan - 4Door 5P
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Kia Optima Alternator Assembly
Part Number: 373002G150
$433.01 MSRP: $623.22
You Save: $190.21 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Alternator
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2011-2013 Kia Optima | 2.4L - Theta 2 | Sedan - 4Door 5P
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Kia Optima Alternator Assembly
Part Number: 373002G600
$437.15 MSRP: $629.17
You Save: $192.02 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2011-2013 Kia Optima | 2.0L - Theta 2 | Sedan - 4Door 5P
View related parts
Kia Optima Alternator Assembly
Part Number: 373002G061
$451.30 MSRP: $649.53
You Save: $198.23 (31%)
ADD TO CART
Product Specifications
- Other Name: Alternator
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2016-2020 Kia Optima | 2.0L - Theta 2, 2.4L - Theta 2 | Sedan - 4Door 5P
View related parts
Kia Optima Alternator Assembly
Part Number: 373002G400
$255.31 MSRP: $356.87
You Save: $101.56 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 373002G400RU
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2011-2013 Kia Optima | 2.4L - Theta 2 | Sedan - 4Door 5P
View related parts
Kia Optima Generator Assembly
Part Number: 373002B960
$255.31 MSRP: $356.87
You Save: $101.56 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator
- Replaced by: 373002B960RU
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2016-2020 Kia Optima | 1.6L - GAMMA | Sedan - 4Door 5P
View related parts
Kia Optima Alternator Assembly
Part Number: 373002G500
$255.31 MSRP: $356.87
You Save: $101.56 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 373002G500RU
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2011-2013 Kia Optima | 2.0L - Theta 2, 2.4L - Theta 2 | Sedan - 4Door 5P
View related parts
Kia Optima Alternator Assembly
Part Number: 373002G855
$366.69 MSRP: $527.77
You Save: $161.08 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2014-2015 Kia Optima | 2.4L - Theta 2 | Sedan - 4Door 5P
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Kia Optima Generator Assembly
Part Number: 373003E100
$375.92 MSRP: $528.72
You Save: $152.80 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 373003E105
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2006-2010 Kia Optima | High Grade, Middle Grade | 2.7L, 2.7L - MU | 4 Door Sedan, Sedan - 4Door 5P
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Kia Optima Generator Assembly
Part Number: 373002G850
$422.62 MSRP: $594.40
You Save: $171.78 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Alternator Assembly
- Replaced by: 373002G950
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2014-2015 Kia Optima | 2.0L - Theta 2 | Sedan - 4Door 5P
View related parts
Kia Optima Alternator Assembly
Part Number: 373002G755
$421.34 MSRP: $592.60
You Save: $171.26 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2014-2015 Kia Optima | 2.4L - Theta 2 | Sedan - 4Door 5P
View related parts
Kia Optima Alternator Assembly
Part Number: 3730038310
$255.31 MSRP: $356.87
You Save: $101.56 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Generator Assembly
- Manufacturer Note: 95(A)
- Replaced by: 3730038310R
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2000-2005 Kia Optima | High Grade, Middle Grade | 2.4L | 4 Door Sedan
View related parts
Kia Optima Generator Assembly
Part Number: 3730025301
$255.31 MSRP: $356.87
You Save: $101.56 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 3730025201RU
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2006-2008 Kia Optima | High Grade, Middle Grade | 2.4L, 2.4L - Theta FF | 4 Door Sedan, Sedan - 4Door 5P
View related parts
Kia Optima Generator Assembly
Part Number: 3730025310
$255.31 MSRP: $356.87
You Save: $101.56 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 3730025201RU
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2006-2008 Kia Optima | 2.4L - Theta FF | Sedan - 4Door 5P
View related parts
Kia Optima Alternator Assembly
Part Number: 3730037250
$255.31 MSRP: $356.87
You Save: $101.56 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Generator Assembly
- Manufacturer Note: 95(A)
- Replaced by: 3730037405RU
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2000-2005 Kia Optima | High Grade, Middle Grade | 2.5L, 2.7L | 4 Door Sedan
View related parts
Kia Optima Alternator Assembly
Part Number: 3730037400
$255.31 MSRP: $356.87
You Save: $101.56 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Generator Assembly
- Manufacturer Note: 110(A)
- Replaced by: 3730037405RU
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2000-2005 Kia Optima | High Grade, Middle Grade | 2.7L | 4 Door Sedan
View related parts
Kia Optima Alternator Assembly
Part Number: 3730037405
$255.31 MSRP: $356.87
You Save: $101.56 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Generator Assembly
- Manufacturer Note: 110(A)
- Replaced by: 3730037405RU
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2000-2005 Kia Optima | High Grade, Middle Grade | 2.7L | 4 Door Sedan
View related parts
Kia Optima Alternator Assembly
Part Number: 3730038400
$377.85 MSRP: $531.44
You Save: $153.59 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Generator Assembly
- Manufacturer Note: 110(A)
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2000-2005 Kia Optima | High Grade, Middle Grade | 2.4L | 4 Door Sedan

Kia Optima Alternator

The Alternator in Kia Optima vehicles is an important part as it acts as a charge supplier to the vehicle's battery and supplies current to the electrical equipment inside the vehicle while it is in operation. Lying ahead of the engine, the Alternator charges mechanical energy within the engine into electrical form of energy such as the battery. The Alternator uses a rotating magnetic field and a stationary armature to produce the AC required to charge the battery and supply electrical current to the car's system. Beside handling voltage output to avoid under voltage or over voltage and other related complications, this Alternator facilitates the electrical system in the car to perform in the most efficient way. Also, for the Kia Optima cars, there are the high output alternators which generate more amperes to car parts or enhanced electric equipment on customized automobiles. These are premium quality Alternators that are specifically designed to improved efficiency in charging systems of electrical demanding vehicles to function optimally.

If you're in search of top-notch, reasonably priced OEM Kia Optima Alternator, then you've found the perfect spot. Our website boasts an extensive inventory of Kia Optima Alternator, all priced at the market's premier price. Rest assured, every genuine part we offer comes with a warranty straight from the manufacturer.

Kia Optima Alternator Parts Questions & Experts Answers

Generator Assembly
3730025201
Q: How do you remove and install an alternator on Kia Optima?
A: Disconnect the cable from the negative battery terminal. For 2001 through 2006 four-cylinder models, disconnect the electrical connectors from the alternator. Loosen the lock bolt on the upper alternator adjusting mount and the lower mount bolt. Turn the adjusting boll counterclockwise to release tension on the drivebelt. Remove the drivebelt. Remove the two alternator mounting bolts and remove the alternator. For all other models, remove the drivebelt. Note: Access is very limited on these models. It will be necessary to remove various components including the lower engine splash shield to gain access. These components vary from model to model. Disconnect the electrical connectors from the alternator. Remove the alternator mounting fasteners and remove the alternator. Installation: If you're replacing the alternator, take the old alternator with you when purchasing a replacement unit. Make sure that the new/rebuilt unit is identical to the old alternator. Look at the terminals - they should be the same in number, size and locations as the terminals on the old alternator. Finally, look at the identification markings they will be stamped in the housing or printed on a tag or plaque affixed to the housing. Make sure that these numbers are the same on both alternators. If the replacement alternator doesn't have a pulley installed, you may have to switch the pulley from the old unit to the replacement unit. When buying a new or rebuilt alternator, ask about the shop's policy regarding pulley swapping. Some shops will perform this service for free. Installation is the reverse of removal. Adjust the drivebelt tension on 2005 and earlier 2.4L four-cylinder models only. Check the charging voltage to verify that the alternator is operating correctly.