How to remove and install Fuel 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 Pipe-Delivery
Part Number: 353402G300
$202.45 MSRP: $294.68
You Save: $92.23 (32%)
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Product Specifications
- Other Name: Fuel Rail
- 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 Fuel Rail-Gdi
Part Number: 353042GGA0
$190.40 MSRP: $277.15
You Save: $86.75 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Fuel Rail
- 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
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Kia Optima Pipe-Delivery
Part Number: 353402B100
$95.88 MSRP: $138.35
You Save: $42.47 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Fuel Rail
- 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 Pipe-Delivery
Part Number: 353402G700
$181.60 MSRP: $264.33
You Save: $82.73 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Fuel Rail
- 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
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Kia Optima Pipe-Delivery
Part Number: 3530437100
$56.35 MSRP: $81.32
You Save: $24.97 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Fuel Rail
- 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
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Kia Optima Pipe-Delivery
Part Number: 353043E210
$105.85 MSRP: $144.60
You Save: $38.75 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Replaced by: 353043E200
- 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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Kia Optima Pipe-Delivery
Part Number: 3530438300
$66.14 MSRP: $95.43
You Save: $29.29 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Fuel Rail
- 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 Pipe-Delivery
Part Number: 353043E200
Product Specifications
- Other Name: Fuel Rail
- Replaces: 353043E210
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
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.
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.
Fits the following Vehicles:
- 2008-2010 Kia Optima | 2.7L - MU | Sedan - 4Door 5P
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Kia Optima Pipe-Delivery
Part Number: 3530438300A
Product Specifications
- 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 Pipe-Delivery(Stud)
Part Number: 353043E130
Product Specifications
- Other Name: Fuel Rail
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2008-2010 Kia Optima | 2.7L - MU | Sedan - 4Door 5P
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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.
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

The Kia Optima Fuel Rail sends pressurized gasoline to each injector to allow the engine to combust fuel efficiently and cleanly. Anchored along the intake ports, the Fuel Rail gets fuel from an electric pump, stores it at a constant pressure, and then supplies the multiport injectors whose pulse width the PCM adjusts depending on idle, cruising, or hard acceleration. Earlier versions of the Optima have applied the same multiport setup, but newer versions of the trims that come with gasoline direct injection rely on a higher-pressure common-rail style Fuel Rail that can exceed 2,000 bar to allow for finer misting and multiple injection events for better power and lower emissions. Whether it is some of the newer versions or not, a pressure regulator or built-in control valve keeps the Fuel Rail stable so that combustion remains balanced. The cost of replacing a Fuel Rail varies in parts and labor. A well-functioning Fuel Rail helps every Kia Optima meet economy and emission targets set for modern Kia vehicles, providing drivers with smooth and responsive performance and reliable starts in every Kia Optima.

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

Pipe-Delivery
353402G300
Q: How to remove and install Fuel 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.