How to replace the Fuel Pressure Regulator in Kia Optima?

To relieve fuel system pressure, the return-type systems of fuel (model years 2001 through 2006) should be used. If the cable is not connected to the negative terminal of the battery, a jumpstart can occur with a spark. Disconnect vacuum hose from fuel pressure regulator at front of vehicle. Detach Fuel Return Line From Regulator. Release two bolts and remove fuel pressure regulator from rail attached to it. Check O-ring condition if you are installing the same regulator; replace if necessary. The reverse of removal procedure is an installation. The return-less fuel systems (models 2006.5 and later) have a fuel pressure regulator that is part of the fuel pump assembly itself: this comprises a pump, a level sender, a filter and a regulator for pressure too.. Also the separate unit cannot be bought at present because by now fuel pump assembly has become unseparated but this was not there when this was written.. Your local auto parts store or dealer parts department may inquire whether they sell these separately yet.

Genuine Kia Optima Fuel Pressure Regulator

Fuel Tank Pressure Regulator

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8 Fuel Pressure Regulators found

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Kia Optima Regulator-Fuel Pressure
Part Number: 313803K100
$73.34 MSRP: $105.83
You Save: $32.49 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Fuel Pressure Regulator, Pressure Regulator
- 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 Regulator-Fuel Pressure
Part Number: 313803K000
$60.53 MSRP: $87.35
You Save: $26.82 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Fuel Pressure Regulator, Pressure Regulator
- Warranty: This genuine part is guaranteed by Kia's factory warranty.
Fits the following Vehicles:
- 2006-2010 Kia Optima | High Grade, Middle Grade | 2.4L, 2.4L - Theta 2, 2.4L - Theta FF | 4 Door Sedan, Sedan - 4Door 5P
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Kia Optima Regulator-Delivery Pressure
Part Number: 3530137100
$70.04 MSRP: $101.07
You Save: $31.03 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Regulator-Delivery Pipe Pressure; Fuel Pressure Regulator
- 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 Regulator-Fuel Pressure
Part Number: 313803Q550
$50.85 MSRP: $73.38
You Save: $22.53 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Fuel Pressure Regulator, Pressure Regulator
- 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 Regulator-Delivery Pressure
Part Number: 3530138300
$67.66 MSRP: $97.63
You Save: $29.97 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Regulator-Delivery Pipe Pressure; Fuel Pressure Regulator
- 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 Regulator-Fuel Pressure
Part Number: 313803M500
$71.51 MSRP: $103.18
You Save: $31.67 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Fuel Pressure Regulator, Pressure Regulator
- 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 Regulator-Fuel Pressure
Part Number: 313803S900
$69.67 MSRP: $100.53
You Save: $30.86 (31%)
Product Specifications
- Other Name: Fuel Pressure Regulator, Pressure Regulator
- 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 Regulator-Delivery Pressure
Part Number: 3530138300A
Product Specifications
- Other Name: Regulator-Delivery Pipe Pressure
- 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 Fuel Pressure Regulator

The Kia Optima Fuel Pressure Regulator maintains fuel pressure in the proper range to provide the engine with the correct fuel mixture for a smooth ride. Mounted on the fuel rail and on Kia systems everywhere, this Fuel Pressure Regulator employs a spring-loaded diaphragm that operates in conjunction with engine vacuum and the return line, which bleeds off excess fuel to the tank at idle, constricting flow when the throttle is opened, thus increasing pressure as demand rises. Throughout the years, the Optima has relied on this same basic vacuum-referenced design instead of switching to electronic or returnless styles, which means function remains consistent across Kia generations. Two operating modes are applied to describe its action in a similar way to the normal types of pressure-reducing and back pressure regulators, but in the case of the Optima application, both occur within one compact unit. If the diaphragm jams shut, pressure spikes, resulting in rich running, poor mileage, and higher emissions, while a broken spring or leak allows pressure to drop and the car runs lean. Simple hose checks, vacuum pump tests, and line pinches quickly point to whether it is the Fuel Pressure Regulator or some other part that is at fault, and Kia Optima owners can make sure they know because engines need a reliable Fuel Pressure Regulator to function properly. The Fuel Pressure Regulator is essential for optimal performance.

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

Regulator-Fuel Pressure
313803K100
Q: How to replace the Fuel Pressure Regulator in Kia Optima?
A:
To relieve fuel system pressure, the return-type systems of fuel (model years 2001 through 2006) should be used. If the cable is not connected to the negative terminal of the battery, a jumpstart can occur with a spark. Disconnect vacuum hose from fuel pressure regulator at front of vehicle. Detach Fuel Return Line From Regulator. Release two bolts and remove fuel pressure regulator from rail attached to it. Check O-ring condition if you are installing the same regulator; replace if necessary. The reverse of removal procedure is an installation. The return-less fuel systems (models 2006.5 and later) have a fuel pressure regulator that is part of the Fuel Pump assembly itself: this comprises a pump, a level sender, a filter and a regulator for pressure too.. Also the separate unit cannot be bought at present because by now fuel pump assembly has become unseparated but this was not there when this was written.. Your local auto parts store or dealer parts department may inquire whether they sell these separately yet.

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