How can the crankshaft be removed and installed on Kia Optima?

The crankshaft has to be pulled out only after the engine is removed out from the car and barring other conditions like the attachment of the flywheel, crankshaft pulley, timing belt or chain, oil pan, oil pump body or the oil filter and piston/connecting rod assemblies are being removed. To do this, set the dial indicator on the face of the crankshaft as illustrated in the figure before removal of the motor. Rotate the crankshaft thereafter to the rear then draw the reading of the indicator which should ordinarily range from 0.003 to 0.010-inch to the front. In case one cannot use a dial indicator, you can use feeler gauges to measure clearance. Drain the main bearing cap bolts slowly; you should be able to undo the bolts by hand starting from about the sixth turn with the help of a271/64 soft-face hammer. Lever the crankshaft out slowly, preferably with help because of the weight. For installation, it is necessary to check and clean the engine block and crankshaft for installation. Turn the block in such a manner that the bottom is facing up, take off the main bearing caps and replace the bolts but keep the old ones with you to check the oil clearance. Scrub the bearing contact surfaces and replace the upper main bearing inserts as well as make sure that there is a correct oiling hole disposition. The status of the oil clearance should be checked using Plastigage and by comparing the width of the crushed cross-section with the scale. In case of rejecting the clearance, check the absence of contaminants and think about the utilization of other bearing dimensions if needed. Once the Plastigage gunk is washed away, it is advisable to spread some grease or assembly lube on the bearing surfaces before replacing the crankshaft. Fit in the main bearing caps and torque up the bolts following a specified pattern and re-check the crankshaft end play if any. Turn the crankshaft, checking for any binding and if any exist, rectify them before fitting a new rear main oil seal.

Genuine Kia Optima Crankshaft

Crank Shaft

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14 Crankshafts found

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Kia Optima Crankshaft
Part Number: 2311125200
$1156.24 MSRP: $1654.13
You Save: $497.89 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Replaced by: 51RZ625F00
- 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 Crankshaft
Part Number: 231112G200
$704.77 MSRP: $1008.25
You Save: $303.48 (31%)
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Product Specifications
- Replaced by: 231112G230
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2008-2015 Kia Optima | 2.4L - Theta 2 | Sedan - 4Door 5P
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Kia Optima Crankshaft
Part Number: 2311037300
$9.32 MSRP: $12.63
You Save: $3.31 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: CRANKSHAFT Assembly
- Replaced by: 234123E001
- 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 Crankshaft Assembly
Part Number: 231103E101
$598.04 MSRP: $882.07
You Save: $284.03 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Crankshaft
- 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 Crankshaft
Part Number: 2311037101
$735.45 MSRP: $1052.15
You Save: $316.70 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: CRANKSHAFT Assembly
- Replaced by: 2311037102
- 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
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Kia Optima Crankshaft Assembly
Part Number: 2311038200
$667.37 MSRP: $954.75
You Save: $287.38 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 2311038230
- 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
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Kia Optima Crankshaft
Part Number: 231112G430
$1020.51 MSRP: $1459.95
You Save: $439.44 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Manufacturer Note: KOREA PRODUCTION
- Replaced by: 71RZ62GF00
- 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 Crankshaft
Part Number: 2311125210
$1156.24 MSRP: $1654.13
You Save: $497.89 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 51RZ625F00
- 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 Crankshaft Assembly
Part Number: 91ZG62BX00
$2236.74 MSRP: $3299.03
You Save: $1062.29 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Crankshaft
- 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 Crankshaft
Part Number: 231112G400
$1020.51 MSRP: $1459.95
You Save: $439.44 (31%)
Product Specifications
- Manufacturer Note: HMMA PRODUCTION
- Replaced by: 71RZ62GF00
- 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 Crankshaft
Part Number: 231112G030
$678.14 MSRP: $1000.20
You Save: $322.06 (33%)
Product Specifications
- Replaces: 231112G010, 231112G000
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2016-2020 Kia Optima | 2.0L - Theta 2 | Sedan - 4Door 5P
View related parts
Kia Optima Crankshaft
Part Number: 231112G230
$683.59 MSRP: $1008.25
You Save: $324.66 (33%)
Product Specifications
- Replaces: 231112G200
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2008-2020 Kia Optima | 2.4L - Theta 2 | Sedan - 4Door 5P
View related parts
Kia Optima Crankshaft Assembly
Part Number: 231102B710
$861.16 MSRP: $1270.15
You Save: $408.99 (33%)
Product Specifications
- Other Name: Crankshaft
- Replaces: 231102B700
- 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 Crankshaft Assembly
Part Number: 2311038230
Product Specifications
- Other Name: Crankshaft
- Replaces: 2311038200
- 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 Crankshaft

The Kia Optima Crankshaft takes the force of the piston and turns it into a smooth spin of the wheel, which means it is the hidden backbone of the engine in the sedan. Situated low within the block, the Crankshaft has throws that are offset from one another and are connected to connecting rods to transform the up and down movement of four cylinders into a rotating movement that feeds the transmission and axles. Through the years, Optima engines have relied on two main Crankshaft builds, rugged cast iron for everyday power and tougher forged steel for higher output versions, both balanced to minimize vibration. Proper oil flow is what keeps the journals gliding on their bearings so that the part can last the life of a Kia, but allowing it to neglect it allows grit to scar surfaces, widen clearances, and cause knocking. When vibrations are present, the Crankshaft and its bearings are carefully replaced and the smooth pulling drivers are accustomed to in their Kia Optima is provided once again. Such reliability is due to the original Kia Optima Crankshaft design.

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

Crankshaft
2311125200
Q: How can the crankshaft be removed and installed on Kia Optima?
A:
The crankshaft has to be pulled out only after the engine is removed out from the car and barring other conditions like the attachment of the flywheel, crankshaft pulley, timing belt or chain, oil pan, oil pump body or the oil filter and piston/connecting rod assemblies are being removed. To do this, set the dial indicator on the face of the crankshaft as illustrated in the figure before removal of the motor. Rotate the crankshaft thereafter to the rear then draw the reading of the indicator which should ordinarily range from 0.003 to 0.010-inch to the front. In case one cannot use a dial indicator, you can use feeler gauges to measure clearance. Drain the main bearing cap bolts slowly; you should be able to undo the bolts by hand starting from about the sixth turn with the help of a271/64 soft-face hammer. Lever the crankshaft out slowly, preferably with help because of the weight. For installation, it is necessary to check and clean the engine block and crankshaft for installation. Turn the block in such a manner that the bottom is facing up, take off the main bearing caps and replace the bolts but keep the old ones with you to check the oil clearance. Scrub the bearing contact surfaces and replace the upper main bearing inserts as well as make sure that there is a correct oiling hole disposition. The status of the oil clearance should be checked using Plastigage and by comparing the width of the crushed cross-section with the scale. In case of rejecting the clearance, check the absence of contaminants and think about the utilization of other bearing dimensions if needed. Once the Plastigage gunk is washed away, it is advisable to spread some grease or assembly lube on the bearing surfaces before replacing the crankshaft. Fit in the main bearing caps and torque up the bolts following a specified pattern and re-check the crankshaft end play if any. Turn the crankshaft, checking for any binding and if any exist, rectify them before fitting a new rear main oil seal.