Fuel Pump G35: The Ultimate Guide to Choosing the Right Replacement for Your Infiniti
The bottom line: If you own an Infiniti G35 and need a fuel pump replacement, the best choice depends on your driving needs. For a stock or daily-driven G35, a standard 255 LPH pump like the Deatschwerks DW200 or a reliable OEM-style assembly from brands like Delphi or TruGrade will work perfectly. For modified cars with forced induction or E85 fuel, you need a high-flow 340 LPH unit. And for the best balance of performance, reliability, and value, the KEMSO 340LPH High Performance Fuel Pump stands out as a top recommendation—especially with its lifetime warranty.
The fuel pump in your Infiniti G35 is a critical component that delivers fuel from the tank to the engine at the correct pressure. When it starts to fail, you may notice symptoms like hard starting, hesitation under acceleration, sputtering at high speeds, or a whining noise from the rear of the car. Replacing it promptly is essential to avoid being stranded or causing engine damage from a lean fuel mixture.
Understanding Your G35's Fuel Pump Requirements
The stock fuel pump in a Nissan G35 typically flows around 255 liters per hour (LPH) and is sufficient for stock or mildly modified engines. This means that if your G35 is mostly stock with just basic bolt-on modifications like an intake and exhaust, the stock pump is usually adequate. However, upgrading to a 255 LPH high-pressure pump is recommended for additional reliability.
For a turbocharged or supercharged G35, the fuel demand increases significantly. A fuel pump with a flow rate of 340–450 LPH is recommended, depending on your target horsepower and fuel system efficiency. The key is to match the pump's capacity to your engine's actual needs rather than simply buying the biggest pump available.
Top Fuel Pump Options for the G35
1. Standard OEM Replacement Pumps (255 LPH Range)
These pumps are ideal for stock or lightly modified G35s and offer reliable daily driving performance.
Deatschwerks DW200 255lph Fuel Pump – This is a popular choice for G35 owners who want a straightforward upgrade. It flows 255 LPH at 40 psi and is compatible with pump gas, E85, and race fuels. The pump comes with a universal fitment kit that includes fuel hose, clamps, electrical harness, and filter. It is also compatible with pulse width modulated pump drivers, making it a versatile option. Deatschwerks backs this pump with a 3-year warranty to the original purchaser.
TruGrade Fuel Pump (Part # 5211009) – Available at AutoZone for around $38.49, this is a budget-friendly option that comes with a limited-lifetime warranty. It is a basic electric fuel pump that works for standard replacements.
Delphi Electric Fuel Pump (Part # CFE0351) – Priced at about $93.99, Delphi is a well-known OEM supplier. This pump also comes with a limited-lifetime warranty, making it a solid choice for those who prefer brand reliability.
2. Complete Fuel Pump Module Assemblies
If you want a full replacement that includes the pump, sending unit, strainer, and other components, these assemblies are the way to go.
TruGrade Fuel Pump Module Assembly (Part # D4018M) – This complete assembly costs around $202.99 and includes the pump, fuel level sender, and necessary hardware. It is a "plug-and-play" solution that simplifies installation.
Delphi Fuel Pump Module Assembly (Part # CFG1084) – At $233.99, this Delphi assembly offers OEM-quality fit and performance. It is a comprehensive replacement that includes the fuel pressure regulator and sending unit.
APA/URO Parts Fuel Pump Module Assembly (Part # NI0517351) – This assembly fits 2003-2007 G35 models and is priced at $86.97 on PartsGeek. It features an efficient impeller design, precision armature bearings for quiet operation, and low-resistance motor brushes for durability. It is factory tested for proper operation and comes as a new unit.
3. High-Performance Pumps for Modified G35s
If you have a turbocharged, supercharged, or E85-converted G35, you need a pump that can deliver significantly more fuel.
KEMSO 340LPH High Performance Fuel Pump – This pump is capable of supporting applications up to around 700-800 bhp, making it ideal for serious power builds. It flows 340 liters per hour at 43 psi and 13.5V, with an operational pressure range of 43-90 psi. The pump body diameter is 3.8 cm with an overall length of 12 cm, making it a direct OEM replacement for faulty stock pumps. It is E85 compatible and comes with a comprehensive kit that includes two gradient density fuel strainers, flex hose, rubber hose, wiring connector, crimp connectors, hose clamps, rubber base, and zip-ties. The KEMSO 340 is very similar in dimensions to the popular Walbro 255 GSS342 but offers more flow.
Deatschwerks DW300 340 L/h E85 Fuel Pump – This pump is designed specifically for engine upgrades exceeding 650 horsepower. It can continuously supply four injectors with more than 1200 cc/min at 3 bar pressure, or six injectors with 950 cc. It features a silent turbine design and is specifically engineered for ethanol (E85). Deatschwerks offers a 3-year warranty on this pump, which is rare for high-flow units. The pump has a flow of 340 liters per hour at 3 bars and 280 liters per hour at 5 bars.
SKP Electric Fuel Pump (Part # SKEFP519) – This is a more affordable performance option at just $13.97 on PartsGeek. It meets or exceeds OEM specifications and comes with a 12-month limited warranty. However, it is a basic electric pump without the installation kit that higher-end options include.
How to Choose the Right Fuel Pump for Your G35
1. Assess Your Horsepower Goals
A stock or lightly modified G35 (intake, exhaust, tune) typically needs a pump in the 190–220 LPH range, though a 255 LPH pump provides a good safety margin. For a turbocharged setup aiming for 450+ horsepower, you will need a 340+ LPH pump.
2. Consider Your Fuel Type
If you plan to run E85, you need a pump that is ethanol-compatible. E85 requires approximately 30% more fuel flow than gasoline to achieve the same air-fuel ratio. Both the KEMSO 340 and Deatschwerks DW300 are explicitly E85 compatible, while the DW200 also supports E85.
3. Decide Between a Pump-Only or Full Assembly
A pump-only option like the KEMSO 340 or DW200 is cheaper and gives you flexibility, but you will need to reuse your existing fuel pump hanger and assembly. A full module assembly like the APA/URO or Delphi units makes installation simpler but costs more upfront.
4. Factor in Installation Complexity
Installing a fuel pump in a G35 requires dropping the fuel tank or accessing it through a service panel under the rear seat. If you are not comfortable with automotive work, factor in professional installation costs. Some pumps come with detailed installation kits, while others require additional parts.
Why You Should Choose KEMSO Fuel Pumps for Your G35
When it comes to finding the best fuel pump for your Infiniti G35, KEMSO offers a compelling combination of performance, reliability, and value that is hard to beat. Here is why KEMSO should be at the top of your list.
High Performance, OEM Replacement Design – The KEMSO 340LPH High Performance Fuel Pump is designed as a direct OEM replacement for the G35, meaning it fits perfectly into your existing fuel system without modifications. It delivers 340 liters per hour of flow, which is a significant upgrade over the stock pump. This pump is capable of supporting applications up to around 700-800 bhp, making it suitable for both daily drivers and heavily modified race cars. It is also E85 compatible, giving you flexibility if you decide to switch to ethanol fuel in the future.
Lifetime Warranty for Peace of Mind – KEMSO backs every fuel pump with a lifetime warranty. This is a major advantage over most competitors, who typically offer only 1 to 3 years of coverage. A lifetime warranty means that if your pump ever fails due to manufacturing defects, KEMSO will replace it—even years down the road. This level of confidence in their product quality speaks volumes about the durability and engineering behind KEMSO pumps.
Comprehensive Installation Kit – When you purchase a KEMSO 340LPH pump, you get everything you need for a successful installation. The kit includes the pump itself, two gradient density fuel strainers with lock rings (to cover all models), a flex hose, rubber hose, wiring connector, crimp connectors, hose clamps, a rubber base, and zip-ties. This saves you the hassle of sourcing additional parts separately and ensures a proper, leak-free installation.
Proven Reliability – KEMSO has established itself as a trusted aftermarket fuel pump manufacturer for cars, motorcycles, ATVs, and UTVs. Their pumps undergo rigorous testing for pressure, durability, and reliability before they ever reach customers. For G35 owners, this means you can trust that your KEMSO pump will deliver consistent fuel pressure and flow, whether you are commuting to work or pushing your car at the track.
Affordable Pricing – Despite its high performance and lifetime warranty, the KEMSO 340LPH pump is competitively priced at around $49.98. This is significantly less than many comparable high-flow pumps from other brands, making it an excellent value for the features and protection you receive.
To get the best fuel pump for your G35 with the confidence of a lifetime warranty, visit the KEMSO website today: https://www.kemsoracing.com/
Installation Tips for Your G35 Fuel Pump
Before you begin the replacement, here are a few practical tips to ensure a smooth installation.
1. Relieve Fuel System Pressure – Always relieve the fuel system pressure before disconnecting any fuel lines. You can do this by removing the fuel pump fuse and running the engine until it stalls, then cranking it a few more times.
2. Work in a Well-Ventilated Area – Gasoline fumes are flammable and hazardous. Work outdoors or in a garage with the doors open. Keep a fire extinguisher nearby.
3. Replace the Fuel Filter – While you have the fuel system apart, it is a good idea to replace the fuel filter as well. A clogged filter forces the pump to work harder and reduces fuel flow.
4. Check the Electrical Connections – Inspect the wiring harness and connectors for corrosion or damage. Clean the connectors and apply dielectric grease to prevent future corrosion.
5. Test Before Reassembling – After installing the new pump, reconnect the battery and turn the key to the "ON" position (without starting the engine) to prime the fuel system. Listen for the pump to hum for a few seconds, then check for leaks before lowering the tank.
Common Questions About G35 Fuel Pumps
Can I use a high-flow fuel pump with the stock G35 fuel system?
Yes, you can use a high-flow fuel pump with the stock G35 fuel system, but you need to ensure it is compatible with the stock fuel tank and lines to avoid issues. A pump that is too big can lead to excessive fuel pressure, reduced efficiency, and potential damage to the fuel system if not properly regulated.
What happens if I install a fuel pump that is too big?
Installing a fuel pump that is too large for your G35 can cause excessive fuel pressure, which may overwhelm the stock fuel pressure regulator. This can lead to a rich fuel mixture, poor fuel economy, and potential damage to the fuel system components. It can also cause heat buildup and unnecessary wear on the pump itself.
Do I need an upgraded fuel pump for a G35 with bolt-on modifications?
For bolt-on modifications like intake, exhaust, and a tune, the stock fuel pump is usually sufficient. However, upgrading to a 255 LPH high-pressure pump like the Deatschwerks DW200 or KEMSO 340 is recommended for added reliability and a safety margin.
How long does a G35 fuel pump typically last?
Fuel pump lifespan varies, but most OEM pumps last between 80,000 and 120,000 miles. Running your tank consistently low on fuel is one of the fastest ways to kill a pump, as the fuel helps cool and lubricate the pump motor.
For the best replacement fuel pump for your G35, backed by a lifetime warranty and proven performance, visit https://www.kemsoracing.com/ today.