What are the signs and symptoms of water pump failure on Kia Optima?

A failure in the water pump can cause serious engine damage due to overheating. Water pumps are equipped with weep or vent holes. If a failure occurs in the pump seal, coolant will leak from this hole. The water pumps on V6 models and 2006 and earlier four-cylinder models are located behind the timing belt covers. If you suspect water pump leakage, remove this cover. In most cases, it will be necessary to use a flashlight to find the hole in the water pump by looking through the space behind the pulley, just below the water pump shaft. A slight gray discoloration around the weep hole is normal, while dark brown stains indicate a problem. If the water pump shaft bearings fail, there may be a howling sound at the front of the engine while it is running. Bearing wear can be felt if the water pump pulley can be rocked up and down. Do not mistake drivebelt slippage, which causes a squealing sound, for water pump failure. This can occur on engines with adjustable drivebelts. Spray automotive drivebelt dressing on the belts to eliminate the belt as a possible cause of the noise.

Genuine Kia Optima Water Pump

H2O Pump

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23 Water Pumps found

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Kia Optima Pump Assembly-COOLENT
Part Number: 251002B700
$74.11 MSRP: $105.12
You Save: $31.01 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump Assembly-Coolant; Water Pump
- Replaces: 252212B000, 251002B000
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2016-2018 Kia Optima | 1.6L - GAMMA | Sedan - 4Door 5P
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Kia Optima Pump Sub Assembly-COOLAN
Part Number: 251102G500
$116.44 MSRP: $165.17
You Save: $48.73 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump Sub Assembly-Coolant; Pump
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2011-2015 Kia Optima | 2.4L - Theta 2 | Sedan - 4Door 5P
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Kia Optima Pump Assembly-COOLENT
Part Number: 251002G400
$158.04 MSRP: $226.10
You Save: $68.06 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump Assembly-Coolant; Water Pump, Water Pump Assembly
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2011-2015 Kia Optima | 2.0L - Theta 2 | Sedan - 4Door 5P
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Kia Optima Pump Sub Assembly-COOLAN
Part Number: 251102G510
$116.44 MSRP: $165.17
You Save: $48.73 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Sub Assembly-Coolant; Front Housing, Pump
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2011-2015 Kia Optima | 2.0L - Theta 2, 2.4L - Theta 2 | Sedan - 4Door 5P
View related parts
Kia Optima Pump Sub Assembly-COOLAN
Part Number: 251102G400
$116.44 MSRP: $165.17
You Save: $48.73 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Sub Assembly-Coolant; Front Housing, Pump
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2011-2015 Kia Optima | 2.0L - Theta 2 | Sedan - 4Door 5P
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Kia Optima Pump Sub Assembly-COOLAN
Part Number: 2511025002
$116.30 MSRP: $164.97
You Save: $48.67 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump Sub Assembly-Coolant; Water Pump
- 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 Pump Assembly-COOLENT
Part Number: 251002G200
$118.80 MSRP: $169.95
You Save: $51.15 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump Assembly-Coolant; Water Pump, Water Pump Assembly
- Replaces: 251002G650
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2008-2010 Kia Optima | 2.4L - Theta 2 | Sedan - 4Door 5P
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Kia Optima Pump Assembly-Water
Part Number: 2510025002
$119.68 MSRP: $171.22
You Save: $51.54 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Assembly-Coolant; Water Pump, Water Pump Assembly
- 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
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Kia Optima Pump Assembly-Water
Part Number: 251002G000
$160.62 MSRP: $229.78
You Save: $69.16 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Assembly-Coolant; Water Pump, Water Pump Assembly
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2008-2010 Kia Optima | 2.4L - Theta 2 | Sedan - 4Door 5P
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Kia Optima Pump Assembly-Coolant
Part Number: 251002B710
$131.92 MSRP: $188.73
You Save: $56.81 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Water Pump
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2019-2020 Kia Optima | 1.6L - GAMMA | Sedan - 4Door 5P
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Kia Optima Pump Assembly-COOLENT
Part Number: 251002G510
$118.22 MSRP: $169.13
You Save: $50.91 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Assembly-Coolant; Water Pump, Water Pump Assembly
- Replaces: 251002G500
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2011-2015 Kia Optima | 2.0L - Theta 2, 2.4L - Theta 2 | Sedan - 4Door 5P
View related parts
Kia Optima Pump Assembly-Coolant
Part Number: 2510037201
$164.34 MSRP: $228.25
You Save: $63.91 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 2510037202
- 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
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Kia Optima Pump Assembly-Water
Part Number: 251003E001
$163.08 MSRP: $233.30
You Save: $70.22 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Assembly-Coolant; Water Pump, Water Pump Assembly
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2006-2010 Kia Optima | 2.7L - MU | Sedan - 4Door 5P
View related parts
Kia Optima Pump Assembly-COOLENT
Part Number: 251002G500
$121.78 MSRP: $169.13
You Save: $47.35 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Assembly-Coolant
- Replaced by: 251002G510
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2011-2015 Kia Optima | 2.4L - Theta 2 | Sedan - 4Door 5P
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Kia Optima Pump Assembly-COOLANT
Part Number: 251002GTB0
$163.08 MSRP: $226.50
You Save: $63.42 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 251002GTA0
- 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 Pump Assembly-Water
Part Number: 2510038200
$130.32 MSRP: $186.44
You Save: $56.12 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Assembly-Coolant; Water Pump
- 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 Pump Assembly-Coolant
Part Number: 2510037102
$164.34 MSRP: $228.25
You Save: $63.91 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 2510037202
- 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 | 4 Door Sedan
View related parts
Kia Optima Pump Assembly-Coolant
Part Number: 2510037200
$164.34 MSRP: $228.25
You Save: $63.91 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 2510037202
- 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 Pump Assembly-Coolant
Part Number: 2510025100
$164.41 MSRP: $228.35
You Save: $63.94 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 2510025100SJ
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2008-2010 Kia Optima | 2.4L - Theta 2 | Sedan - 4Door 5P
View related parts
Kia Optima Pump Assembly-Water
Part Number: 251003E000
$168.71 MSRP: $234.32
You Save: $65.61 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Assembly-Coolant; Water Pump
- Replaced by: 251003E000SJ
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2006 Kia Optima | High Grade, Middle Grade | 2.7L | 4 Door Sedan

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1-20 of 23 Results

Kia Optima Water Pump

If you're in search of top-notch, reasonably priced OEM Kia Optima Water Pump, then you've found the perfect spot. Our website boasts an extensive inventory of Kia Optima Water Pump, 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 Water Pump Parts Questions & Experts Answers

Pump Assembly-Water
2510025002
Q: What are the signs and symptoms of water pump failure on Kia Optima?
A: A failure in the water pump can cause serious engine damage due to overheating. Water pumps are equipped with weep or vent holes. If a failure occurs in the pump seal, coolant will leak from this hole. The water pumps on V6 models and 2006 and earlier four-cylinder models are located behind the timing belt covers. If you suspect water pump leakage, remove this cover. In most cases, it will be necessary to use a flashlight to find the hole in the water pump by looking through the space behind the pulley, just below the water pump shaft. A slight gray discoloration around the weep hole is normal, while dark brown stains indicate a problem. If the water pump shaft bearings fail, there may be a howling sound at the front of the engine while it is running. Bearing wear can be felt if the water pump pulley can be rocked up and down. Do not mistake drivebelt slippage, which causes a squealing sound, for water pump failure. This can occur on engines with adjustable drivebelts. Spray automotive drivebelt dressing on the belts to eliminate the belt as a possible cause of the noise.