How to remove and replace fuel injectors and the fuel rail in a Nissan Frontier?

Relieve the fuel pressure, unplug the battery cable, and remove the upper intake manifold. Unplug the electrical connectors and take off the injector cap screws and cap. Pull the injectors from the fuel rail cup. Disconnect the fuel feed and return lines and disconnect the fuel pressure regulator vacuum hose. Remove the retaining bolts and lift the fuel rail and injectors as an assembly. Remove and discard the clips. Inspect the fuel rail insulators and replace them as needed. Install the insulators and lubricate them with oil. Replace the injector O-rings and lubricate them with oil. Install the injectors onto the fuel rail, install the new retaining clips, install the fuel rail, and tighten the bolts.

Genuine Nissan Frontier Fuel Rail

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10 Fuel Rails found

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Nissan Frontier Fuel Pipe Assembly
Part Number: 17521-EA20A
$204.32 MSRP: $288.58
You Save: $84.26 (30%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pipe Assembly-Fuel; Fuel Rail
- Replaces: 17521-EA200
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2005-2019 Nissan Frontier | LE, Off-Road, PRO-4X, S, SE, SL, SV | 6 Cyl 4.0L | VQ40DE
View related parts
Nissan Frontier Fuel Pipe Assembly
Part Number: 17521-EA200
$204.32 MSRP: $288.58
You Save: $84.26 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assembly-Fuel
- Replaced by: 17521-EA20A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2005-2008 Nissan Frontier | LE, Off-Road, SE | 6 Cyl 4.0L | VQ40DE
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Nissan Frontier Tube Assembly Fuel
Part Number: 17520-EA02A
$127.53 MSRP: $180.13
You Save: $52.60 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Tube Assy-Fuel; Fuel Rail
- Replaces: 17520-EA020
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2005-2019 Nissan Frontier | S, SE, SV, XE | 4 Cyl 2.5L | QR25DE
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Nissan Frontier Pipe Assembly
Part Number: 17521-4S100
$204.40 MSRP: $288.70
You Save: $84.30 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assembly-Fuel
- Replaced by: 17521-4S10A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1998-2004 Nissan Frontier | SC, SE, XE | 6 Cyl 3.3L | VG33E
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Nissan Frontier Fuel Pipe Assembly
Part Number: 17523-0W000
$101.52 MSRP: $143.38
You Save: $41.86 (30%)
ADD TO CART
Product Specifications
- Other Name: Pipe Assembly-Fuel
- Replaced by: 17523-0W00A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1998-2004 Nissan Frontier | SC, SE, XE | 6 Cyl 3.3L | VG33E
View related parts
Nissan Frontier Tube Assembly Fuel
Part Number: 17520-EA020
$127.53 MSRP: $180.13
You Save: $52.60 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Tube Assy-Fuel
- Replaced by: 17520-EA02A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2005-2007 Nissan Frontier | XE | 4 Cyl 2.5L | QR25DE
View related parts
Nissan Frontier PIPE ASSY-FUEL
Part Number: 17521-9BT1A
$250.05 MSRP: $326.18
You Save: $76.13 (24%)
ADD TO CART
Product Specifications
- Other Name: Fuel Rail
- Replaces: 17521-9BT0A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2020-2024 Nissan Frontier | Hardbody Edition, PRO-4X, PRO-X, S, SL, SV | 6 Cyl 3.8 L GAS
View related parts
Nissan Frontier PIPE ASSY-FUEL
Part Number: 17522-9BT1A
$253.16 MSRP: $328.05
You Save: $74.89 (23%)
ADD TO CART
Product Specifications
- Other Name: Fuel Rail
- Replaces: 17522-9BT0A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 2020-2024 Nissan Frontier | Hardbody Edition, PRO-4X, PRO-X, S, SL, SV | 6 Cyl 3.8 L GAS
View related parts
Nissan Frontier Tube Assembly Fuel
Part Number: 17520-3S510
Product Specifications
- Other Name: Tube Assy-Fuel
- Replaced by: 17520-3S51A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1998-2004 Nissan Frontier | SE, STD, XE | 4 Cyl 2.4L | KA24DE
View related parts
Nissan Frontier Fuel Tube Assembly
Part Number: 17520-3S500
Product Specifications
- Other Name: Tube Assy-Fuel
- Replaced by: 17520-3S50A
- Warranty: This genuine part is guaranteed by Nissan's factory warranty.
Fits the following Vehicles:
- 1998-2003 Nissan Frontier | SE, STD, XE | 4 Cyl 2.4L | KA24DE

Nissan Frontier Fuel Rail

The Nissan Frontier Fuel Rail transfers pressurized gasoline from the pump to the injectors to deliver a precise spray of fuel to the combustion chamber for clean burning. Throttle body injection was utilized by early Frontier trucks. A compact unit was placed above the throttle plate. The Fuel Rail section was short because one or two injectors lived within the housing. However, the objective remained the same: constant fuel supply at regulated pressure. With improvements in electronic control, modern Nissan pickups have adopted port injection. This involves having one injector for each intake valve. The injectors are connected to a longer Fuel Rail that distributes flow evenly. A regulator ensures that pressure remains constant. As a result, the powertrain computer can stretch or shorten pulse width to maintain ideal injector flow during idle or heavy load. The recent Frontier gasoline direct injection models rely on an ultra-strong common Fuel Rail capable of withstanding extreme pressure that enables multiple, carefully timed sprays directly into the chamber, which produces stronger power, improved mileage, and cleaner exhaust. Though a lot has changed through the ages, each Nissan model always counts on its Fuel Rail to uphold efficiency and performance.

If you need any OEM Nissan Frontier Fuel Rail, feel free to choose them out of our huge selection of genuine Nissan Frontier Fuel Rail. All our parts are offered at unbeatable prices and are supported by the manufacturer's warranty. In addition, we offer quick shipping to have your parts delivered to your door step in a matter of days.

Nissan Frontier Fuel Rail Parts Questions & Experts Answers

Pipe Assembly
17521-4S100
Q: How to remove and replace fuel injectors and the fuel rail in a Nissan Frontier?
A:
Relieve the fuel pressure, unplug the battery cable, and remove the upper intake manifold. Unplug the electrical connectors and take off the injector cap screws and cap. Pull the injectors from the fuel rail cup. Disconnect the fuel feed and return lines and disconnect the Fuel Pressure Regulator vacuum hose. Remove the retaining bolts and lift the fuel rail and injectors as an assembly. Remove and discard the clips. Inspect the fuel rail insulators and replace them as needed. Install the insulators and lubricate them with oil. Replace the injector O-rings and lubricate them with oil. Install the injectors onto the fuel rail, install the new retaining clips, install the fuel rail, and tighten the bolts.