How to Replace and Install Fuel Injectors and Fuel Rail in the Infiniti G35?

Remove the engine cover, fuel tank cap, and battery cable. Drain the coolant and remove the air intake duct and intake manifold plenum. Detach the fuel supply line and pulsation damper, unplug the connectors from the fuel injectors, and clean around them. Remove the mounting bolts, fuel rail and injectors, then the 0-rings and the pulsation damper. Coat the new 0-rings with oil and install them on the injectors. Install each injector into the fuel rail. Clean the injector bores in the intake manifold, install the fuel rail mounting bolt spacers, and reconnect the fuel supply line, then turn on the ignition switch and look for leaks.

Genuine Infiniti G35 Fuel Rail

Engine Fuel Rail

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6 Fuel Rails found

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Infiniti G35 Pipe Assembly
Part Number: 17521-EY00A
$257.45 MSRP: $350.27
You Save: $92.82 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pipe Assembly-Fuel; Fuel Rail
- Warranty: This genuine part is guaranteed by Infiniti's factory warranty.
Fits the following Vehicles:
- 2008 Infiniti G35 | Journey, Leather, Premium, Sport, Sport Premium | 6 Cyl 3.7L | VQ37VHR
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Infiniti G35 Fuel Pipe Assembly
Part Number: 17521-JK20B
$234.45 MSRP: $318.98
You Save: $84.53 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pipe Assembly-Fuel
- Replaced by: 17521-JK20C
- Warranty: This genuine part is guaranteed by Infiniti's factory warranty.
Fits the following Vehicles:
- 2007 Infiniti G35 | Leather, Sport | 6 Cyl 3.5L | VQ35HR
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Infiniti G35 Pipe Assembly
Part Number: 17521-JK20C
$234.45 MSRP: $318.98
You Save: $84.53 (27%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe Assembly-Fuel; Fuel Rail
- Replaces: 17521-JK20B
- Warranty: This genuine part is guaranteed by Infiniti's factory warranty.
Fits the following Vehicles:
- 2007-2008 Infiniti G35 | Journey, Leather, Premium, Sport, Sport Premium | 6 Cyl 3.5L | VQ35HR
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Infiniti G35 Fuel Pipe Assembly
Part Number: 17521-8J101
Product Specifications
- Other Name: Pipe Assembly-Fuel
- Warranty: This genuine part is guaranteed by Infiniti's factory warranty.
Fits the following Vehicles:
- 2003-2005 Infiniti G35 | Basic, Sport, Track | 6 Cyl 3.5L | VQ35DE
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Infiniti G35 Fuel Pipe Assembly
Part Number: 17521-AC70A
Product Specifications
- Other Name: Pipe Assembly-Fuel; Fuel Rail
- Replaces: 17521-AC700
- Warranty: This genuine part is guaranteed by Infiniti's factory warranty.
Fits the following Vehicles:
- 2004-2007 Infiniti G35 | Sport, Track | 6 Cyl 3.5L | VQ35DE
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Infiniti G35 Pipe Assembly
Part Number: 17521-AC700
Product Specifications
- Other Name: Pipe Assembly-Fuel
- Replaced by: 17521-AC70A
- Warranty: This genuine part is guaranteed by Infiniti's factory warranty.
Fits the following Vehicles:
- 2004-2007 Infiniti G35 | Sport, Track | 6 Cyl 3.5L | VQ35DE

Infiniti G35 Fuel Rail

The Infiniti G35 Fuel Rail carries high-pressure gasoline from the electric pump to each injector, resulting in throttle response and fewer emissions. Across the range of Infiniti vehicles wearing the G35 badge, Fuel Rail bolts along the intake manifold runner feed multiport injectors. These injectors mist fuel just ahead of each intake valve so the powertrain computer can vary injector pulse width based on airflow, oxygen, and throttle signals. The G35 Fuel Rail applied in early production years of G35 models had port injection and an external pressure regulator. This is a significant improvement over older throttle body assemblies that mix air and fuel over common plates. Later changes to the Infiniti kept this layout but adopted insights from the common rail. That allowed a higher pressure in the Fuel Rail for smaller droplets and a more complete burn, yet not going to complete direct injection. The Fuel Rail, regardless of trim, is a rigid metal tube that can resist heat and vibration. According to parts guides, pricing for replacement is a reasonable amount for any given G35 in the Infiniti lineup.

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Infiniti G35 Fuel Rail Parts Questions & Experts Answers

Pipe Assembly
17521-JK20C
Q: How to Replace and Install Fuel Injectors and Fuel Rail in the Infiniti G35?
A:
Remove the engine cover, fuel tank cap, and battery cable. Drain the coolant and remove the air intake duct and intake manifold plenum. Detach the fuel supply line and pulsation damper, unplug the connectors from the fuel injectors, and clean around them. Remove the mounting bolts, fuel rail and injectors, then the 0-rings and the pulsation damper. Coat the new 0-rings with oil and install them on the injectors. Install each injector into the fuel rail. Clean the injector bores in the intake manifold, install the fuel rail mounting bolt spacers, and reconnect the fuel supply line, then turn on the ignition switch and look for leaks.