How to remove and install injector and Fuel Rail on Kia Optima?

We recommend replacing all injector O-rings even when only one injector O-ring or seal is leaking. On most fuel rails, you have to remove the entire assembly anyway, so replace all of the O-rings/seals to avoid having to remove the fuel rail later. First, relieve the fuel pressure. Then, disconnect the cable from the negative battery terminal. Remove the engine cover, if equipped, and the air intake duct. On V6 models, remove the upper intake manifold. Disconnect the electrical connectors from the fuel injectors, unbolt the harness and set the injector harness aside. Remove the fuel rail mounting bolts, the fuel rail and the fuel injectors as a single assembly. Remove the fuel injectors from the fuel rail. If you intend to re-use the same injectors, replace the grommets and O-rings. Installation is the reverse of removal. Be sure to use new injector O-rings and tighten the fuel rail mounting bolts to the torque.

Genuine Kia Optima Fuel Rail

Engine Fuel Rail

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13 Fuel Rails found

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Kia Optima Fuel Rail-Gdi
Part Number: 353042GGA0
$160.68 MSRP: $219.87
You Save: $59.19 (27%)

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Product Specifications
- Other Name: Fuel Rail
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
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Fits the following Vehicles:
- 2016-2020 Kia Optima | 2.0L - Theta 2, 2.4L - Theta 2 | Sedan - 4Door 5P
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Kia Optima Pipe-Delivery
Part Number: 353402B100
$88.95 MSRP: $119.55
You Save: $30.60 (26%)

Add to Cart
Product Specifications
- Other Name: Fuel Rail
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
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Fits the following Vehicles:
- 2016-2018 Kia Optima | 1.6L - GAMMA | Sedan - 4Door 5P
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Kia Optima Pipe-Delivery
Part Number: 353402G700
$166.93 MSRP: $228.42
You Save: $61.49 (27%)

Add to Cart
Product Specifications
- Other Name: Fuel Rail
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
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Fits the following Vehicles:
- 2011-2015 Kia Optima | 2.0L - Theta 2, 2.4L - Theta 2 | Sedan - 4Door 5P
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Kia Optima Pipe-Delivery
Part Number: 3530437100
$52.28 MSRP: $70.27
You Save: $17.99 (26%)

Add to Cart
Product Specifications
- Other Name: Fuel Rail
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
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Fits the following Vehicles:
- 2000-2005 Kia Optima | High Grade, Middle Grade | 2.5L, 2.7L | 4 Door Sedan
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Kia Optima Pipe-Delivery
Part Number: 3530438300A
$66.02 MSRP: $88.73
You Save: $22.71 (26%)

Add to Cart
Product Specifications
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
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Fits the following Vehicles:
- 2000-2005 Kia Optima | High Grade, Middle Grade | 2.4L | 4 Door Sedan
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Kia Optima Pipe-Delivery
Part Number: 353043E210
$92.96 MSRP: $124.95
You Save: $31.99 (26%)

Add to Cart
Product Specifications
- Replaced by: 353043E200
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
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Fits the following Vehicles:
- 2006 Kia Optima | High Grade, Middle Grade | 2.7L | 4 Door Sedan
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Kia Optima Pipe-Delivery
Part Number: 3530438300
$61.36 MSRP: $82.47
You Save: $21.11 (26%)

Add to Cart
Product Specifications
- Other Name: Fuel Rail
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
View More
Fits the following Vehicles:
- 2000-2005 Kia Optima | High Grade, Middle Grade | 2.4L | 4 Door Sedan
View related parts
Kia Optima Pipe-Delivery
Part Number: 353402G300
$186.10 MSRP: $254.65
You Save: $68.55 (27%)
Product Specifications
- Other Name: Fuel Rail
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
View More
Fits the following Vehicles:
- 2008-2010 Kia Optima | 2.4L - Theta 2 | Sedan - 4Door 5P
View related parts
Kia Optima Pipe-Delivery
Part Number: 353043E200
Product Specifications
- Other Name: Fuel Rail
- Replaces: 353043E210
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
View More
Fits the following Vehicles:
- 2006-2008 Kia Optima | High Grade, Middle Grade | 2.7L, 2.7L - MU | 4 Door Sedan, Sedan - 4Door 5P
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Kia Optima Pipe-Delivery
Part Number: 353043E100
Product Specifications
- Other Name: Pipe-Delivery(Stud)
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
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Fits the following Vehicles:
- 2006-2008 Kia Optima | High Grade, Middle Grade | 2.7L, 2.7L - MU | 4 Door Sedan, Sedan - 4Door 5P
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Kia Optima Pipe-Delivery Upper
Part Number: 353043E230
Product Specifications
- Other Name: Pipe-Delivery; Fuel Rail
- Position: Upper
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
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Fits the following Vehicles:
- 2008-2010 Kia Optima | 2.7L - MU | Sedan - 4Door 5P
View related parts
Kia Optima Pipe-Delivery(Stud)
Part Number: 353043E130
Product Specifications
- Other Name: Fuel Rail
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
View More
Fits the following Vehicles:
- 2008-2010 Kia Optima | 2.7L - MU | Sedan - 4Door 5P
View related parts
Kia Optima Pipe-Delivery
Part Number: 3534025250
Product Specifications
- Other Name: Fuel Rail
- Replaces: 3534025260
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
View More
Fits the following Vehicles:
- 2006-2008 Kia Optima | High Grade, Middle Grade | 2.4L, 2.4L - Theta FF | 4 Door Sedan, Sedan - 4Door 5P

Kia Optima Fuel Rail Parts Questions & Answers

Pipe-Delivery
353402G300
Q: How to remove and install injector and Fuel Rail on Kia Optima?
A: We recommend replacing all injector O-rings even when only one injector O-ring or seal is leaking. On most fuel rails, you have to remove the entire assembly anyway, so replace all of the O-rings/seals to avoid having to remove the fuel rail later. First, relieve the fuel pressure. Then, disconnect the cable from the negative battery terminal. Remove the engine cover, if equipped, and the air intake duct. On V6 models, remove the upper intake manifold. Disconnect the electrical connectors from the fuel injectors, unbolt the harness and set the injector harness aside. Remove the fuel rail mounting bolts, the fuel rail and the fuel injectors as a single assembly. Remove the fuel injectors from the fuel rail. If you intend to re-use the same injectors, replace the grommets and O-rings. Installation is the reverse of removal. Be sure to use new injector O-rings and tighten the fuel rail mounting bolts to the torque.

Related Kia Optima Parts

Kia Optima Fuel Rail

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