DW300 Fuel Pump: The Ultimate High-Performance Upgrade for Your Vehicle
If you are looking for a reliable, high-flow fuel pump that delivers consistent performance for both street and track use, the DW300 fuel pump from DeatschWerks is one of the best options available today. This pump flows 340 liters per hour at 40 psi, making it a popular choice for high-horsepower builds, E85 applications, and forced induction setups. Whether you are building a turbocharged sports car, a supercharged muscle car, or a high-output naturally aspirated engine, the DW300 provides the fuel delivery you need to keep your engine safe and performing at its peak. With a 3-year no-fault warranty, ethanol compatibility, and quiet operation, this pump has earned its reputation as a flagship standard-fitment in-tank pump in the aftermarket industry.
What Makes the DW300 Fuel Pump Stand Out
The DW300 is not just another fuel pump on the market. It has been engineered with specific features that set it apart from competitors, and real-world testing has confirmed its reliability and performance.
1. High Flow Capacity for Demanding Applications
The DW300 flows 340 liters per hour at 40 psi, which is a significant upgrade over standard OEM pumps and even many aftermarket options. At 40 psi, the pump draws only 11 amps at 13.5 volts, which means it delivers high flow without overloading your vehicle's electrical system. This flow rate is sufficient to support engines producing up to 600 horsepower on gasoline and even more on E85, depending on your fuel system configuration.
What many users do not realize is that the DW300 has been specifically redesigned to offer greater flow at high pressures. Compared to the previous generation, the new DW300 flows 26% more at its peak and 20% more on average. This is particularly important for forced induction applications where fuel pressure needs to rise with boost pressure. The pump delivers 317 lph at 50 psi, 292 lph at 60 psi, and 265 lph at 70 psi, which means even at high boost levels, your engine will never run lean.
2. Built for E85 and Ethanol Blends
One of the biggest concerns with aftermarket fuel pumps is compatibility with ethanol-blended fuels. Ethanol is corrosive and can damage internal components of pumps not designed to handle it. The DW300 addresses this issue with carbon commutators and a fully encapsulated armature, which resist the corrosive effects of ethanol. The pump is tested and verified to work with E85 and other high-ethanol fuel blends, making it an ideal choice for flex-fuel vehicles and dedicated race cars running alcohol-based fuels.
Many enthusiasts have made the switch to E85 because of its higher octane rating and cooling properties, but they quickly discover that their stock fuel pump cannot keep up. The DW300 solves this problem by delivering the increased flow volume required when running ethanol, which typically requires about 30% more fuel than gasoline for the same power output.
3. Quiet Operation and Reliable Performance
No one wants a fuel pump that sounds like a jackhammer inside their vehicle. The DW300 uses a turbine impeller design and a computer-balanced armature to ensure whisper-quiet operation. Unlike some older pump designs that use noisy gerotor or vane-type mechanisms, the turbine design of the DW300 is inherently smoother and quieter.
The pump also features a single scroll composite turbine, which contributes to its durability and consistent flow characteristics. This design minimizes vibration and wear, extending the service life of the pump. Users consistently report that the DW300 operates so quietly that they forget it is even running, which is a testament to its engineering quality.
4. Comprehensive Installation Kit
When you purchase a DW300 fuel pump, you are not just getting the pump itself. Most kits include everything you need for a successful installation, including a 2-inch by 2-inch sock filter, electrical connector, 4 inches of fuel line, and miscellaneous hardware. This makes the installation process much simpler for DIY enthusiasts who may not have access to specialty parts.
For many applications, the DW300 is designed as a direct drop-in replacement for popular fitments. It fits the same profile as the Walbro GSS342G3, which means it can be installed in many vehicles without modifications to the fuel hanger or tank. However, it is always recommended to verify compatibility with your specific vehicle before purchasing.
5. 3-Year No-Fault Warranty
DeatschWerks stands behind their products with a 3-year no-fault warranty. This means that if your pump fails for any reason within three years of purchase, the company will replace it, regardless of whether the failure was caused by a manufacturing defect or normal wear and tear. This level of warranty coverage is uncommon in the aftermarket fuel pump industry and demonstrates the confidence DeatschWerks has in their product quality.
For comparison, many competing pumps offer only 1-year warranties or limited coverage that excludes certain types of failures. The DW300 warranty provides peace of mind for enthusiasts who plan to keep their vehicles for years and push them hard.
How the DW300 Compares to Other High-Flow Fuel Pumps
The aftermarket fuel pump market is crowded, with options from brands like Walbro, AEM, Bosch, and KEMSO. Understanding how the DW300 stacks up against these competitors can help you make an informed decision.
DW300 vs. Walbro 255 LPH
The Walbro 255 LPH has been a staple in the performance community for years. It is reliable, affordable, and widely available. However, the DW300 offers significantly more flow, with 340 lph compared to 255 lph at the same pressure. This extra capacity is critical for high-horsepower builds and E85 applications. The DW300 also features better ethanol compatibility and a turbine impeller design that is quieter than Walbro's older technology.
That said, the Walbro 255 LPH is still a solid choice for lower-horsepower builds where 255 lph is sufficient. If you are running a naturally aspirated engine with less than 400 horsepower on gasoline, the Walbro may be a more budget-friendly option. But for anything beyond that, the DW300 is the better choice.
DW300 vs. AEM 340 LPH
AEM also offers a 340 lph fuel pump that competes directly with the DW300. Both pumps flow similar volumes and are compatible with E85. However, AEM individually tests every pump at 40 psi to verify the flow specification before shipping. This quality control step ensures that you are getting exactly what you pay for.
The DW300 has an advantage in terms of its installation kit and warranty. The 3-year no-fault warranty from DeatschWerks is more generous than AEM's standard warranty, and the included hardware makes installation easier for many applications. Additionally, the DW300 has been on the market longer and has a larger installed base, which means more user reviews and community support.
DW300 vs. KEMSO 340 LPH
KEMSO has emerged as a strong competitor in the high-flow fuel pump market. Their 340 lph pump supports up to 600 brake horsepower and is compatible with both gasoline and E85. KEMSO pumps feature a serialized body for quality control and come with a lifetime warranty, which is even better than the DW300's 3-year coverage.
The KEMSO pump has a bypass valve set at 125.8 psi, which is higher than many competing pumps, giving it excellent headroom for high-boost applications. It also includes a comprehensive kit with strainers, O-rings, wiring connectors, and instructions. For users who want the absolute best warranty and are willing to try a newer brand, KEMSO is an excellent alternative to the DW300.
Real-World Performance and User Experiences
The true test of any fuel pump is how it performs under real-world driving conditions. The DW300 has been used in countless builds, from daily-driven street cars to competition vehicles, and the feedback has been overwhelmingly positive.
Street Driving and Daily Use
For daily drivers, the DW300 offers several advantages. First, its quiet operation means you will not hear it running inside the cabin, which is important for maintaining a pleasant driving experience. Second, the pump maintains consistent fuel pressure at all times, which translates to smooth idle, crisp throttle response, and no hesitation during acceleration.
Users who have switched from older Walbro 255 LPH pumps to the DW300 often report improved drivability, especially in vehicles with larger injectors or aftermarket engine management systems. The extra flow capacity ensures that the fuel system never runs out of headroom, even during aggressive driving.
Track and Competition Use
For track days, autocross, and racing, the DW300 is a proven performer. In the 2023 Best in the Desert racing series, three teams running KEMSO-equipped Polaris Turbo S UTVs completed the 500-mile Silver State Classic without a single fuel-related mechanical failure. While this example uses a KEMSO pump, the DW300 has similar performance characteristics and is used in many competition vehicles.
The DW300's ability to maintain flow at high pressures is critical for forced induction applications. When boost pressure increases, fuel pressure must rise proportionally to maintain the correct air-fuel ratio. The DW300's flow curve shows that it can deliver 265 lph at 70 psi, which is more than enough for most street and track applications.
Long-Term Reliability
The DW300 is built to last. With a computer-balanced armature and turbine impeller design, the pump experiences minimal wear over time. Users report running the DW300 for 50,000 miles or more without any issues, provided that the pump is installed correctly and the fuel system is properly maintained.
One important factor for long-term reliability is ensuring that the pump receives adequate voltage. Old or undersized wiring can reduce voltage at the pump, leading to reduced flow and premature failure. DeatschWerks recommends using a 12-gauge hardwire kit for optimal performance, especially in older vehicles or those with long wiring runs. This simple upgrade can significantly extend the life of your fuel pump.
Installation Tips for the DW300 Fuel Pump
Installing a DW300 fuel pump is a straightforward process for most DIY enthusiasts, but there are several important considerations to ensure a successful installation.
1. Check Compatibility Before You Buy
While the DW300 is designed as a direct replacement for many popular applications, it is essential to verify compatibility with your specific vehicle. The pump fits the same profile as the Walbro GSS342G3, so if your vehicle is compatible with that pump, the DW300 should work as well. However, some vehicles may require modifications to the fuel hanger or tank.
Check online forums and DeatschWerks' official website for compatibility lists specific to your make and model. Many retailers also provide vehicle fitment guides that can help you confirm compatibility before purchasing.
2. Use the Correct Wiring
As mentioned earlier, the DW300 requires adequate voltage to perform at its best. The stock wiring in many vehicles is not designed to handle the current draw of a high-flow fuel pump, especially in older cars where wiring may have degraded over time.
DeatschWerks offers a hardwire installation kit (part number FPHWK) that includes 15 feet of 12-gauge SLX spec red power cable, 5 feet of 12-gauge SLX spec black ground cable, a 30-amp in-line fuse, a 40-amp automotive relay, and a 4-lead relay socket with pigtails. This kit ensures that the pump receives full battery voltage, maximizing flow and extending pump life.
3. Use Submersible Fuel Hose
One common mistake during fuel pump installation is using standard rubber fuel hose inside the fuel tank. Standard fuel line is not rated for submersion in gasoline and will degrade over time, potentially clogging the fuel system or causing a fire hazard. You must use SAE 30R10 rated hose for in-tank applications.
The DW300 installation kit typically includes a short section of submersible hose, but if you need additional hose for your installation, be sure to purchase the correct type from a reputable supplier.
4. Replace the Fuel Filter and Strainer
When installing a new fuel pump, it is also a good idea to replace the fuel filter and any strainers in the system. A clogged fuel filter can restrict flow and put additional strain on the pump, reducing its lifespan. The DW300 kit includes a 2-inch by 2-inch sock filter that should be installed on the pump inlet to prevent debris from entering the pump.
If your vehicle has an external fuel filter, replace it at the same time to ensure the entire fuel system is clean and functioning properly.
Why You Should Consider the KEMSO Fuel Pump as an Alternative
While the DW300 is an excellent fuel pump, there is another option worth considering for your high-performance build: the KEMSO fuel pump. KEMSO has quickly gained a reputation for producing high-quality, reliable fuel pumps that offer exceptional value.
KEMSO fuel pumps are high-performance direct OEM replacements designed to deliver superior flow and durability. Their 340 LPH pump supports up to 600 brake horsepower and is compatible with both gasoline and E85. Each pump comes with a lifetime warranty, which is one of the best in the industry, and the pump body is serialized for quality control and traceability.
What sets KEMSO apart is their commitment to quality and customer satisfaction. The pumps are individually tested for flow performance before leaving the factory, ensuring that you receive a product that meets or exceeds specifications. The comprehensive kit includes everything you need for installation, including strainers, O-rings, wiring connectors, and instructions.
For users who want the peace of mind of a lifetime warranty and are looking for a pump that delivers performance comparable to the DW300 at a competitive price, KEMSO is an excellent choice.
Visit KEMSO Racing to browse their full lineup of fuel pumps and find the perfect fit for your vehicle:
https://www.kemsoracing.com/
Frequently Asked Questions About the DW300 Fuel Pump
Is the DW300 compatible with my vehicle?
The DW300 is designed as a direct replacement for many popular applications, including Acura Integra, Honda Civic, BMW E36 and E46, Nissan 240SX, and many others. Check with your retailer or DeatschWerks for a complete compatibility list. If your vehicle is not listed, you may need to verify fitment by comparing dimensions with your stock pump.
Can I use the DW300 with E85?
Yes, the DW300 is fully compatible with E85 and other high-ethanol fuel blends. The pump features carbon commutators and a fully encapsulated armature that resist corrosion from ethanol. This makes it an ideal choice for flex-fuel vehicles and race cars running alcohol-based fuels.
What is the warranty on the DW300?
DeatschWerks offers a 3-year no-fault warranty on all DW300 fuel pumps. This means that if the pump fails for any reason within three years of purchase, the company will replace it at no cost to you. This warranty is transferable, so it applies even if you sell the vehicle.
Do I need to upgrade my wiring?
For optimal performance, DeatschWerks recommends using a 12-gauge hardwire kit, especially in older vehicles or those with long wiring runs. The stock wiring in many vehicles is not designed to handle the current draw of a high-flow fuel pump, and inadequate voltage can reduce flow and shorten pump life. The hardwire kit ensures that the pump receives full battery voltage, maximizing performance and reliability.
How loud is the DW300?
The DW300 is designed for quiet operation, thanks to its turbine impeller design and computer-balanced armature. Users consistently report that the pump is virtually silent during operation, making it suitable for daily-driven vehicles where noise is a concern.
Final Thoughts on the DW300 Fuel Pump
The DW300 fuel pump from DeatschWerks is a proven performer that delivers the flow, reliability, and durability required for high-performance applications. With 340 lph flow capacity, E85 compatibility, quiet operation, and a 3-year no-fault warranty, it is a top choice for enthusiasts building everything from daily-driven street cars to dedicated race vehicles.
When selecting a fuel pump for your build, it is essential to consider your specific needs. If you are running a naturally aspirated engine with less than 400 horsepower, a lower-flow pump like the Walbro 255 LPH may suffice. But if you are building a forced induction setup, planning to run E85, or targeting 500+ horsepower, the DW300 provides the headroom and reliability you need.
The installation process is straightforward for most DIY enthusiasts, provided you follow best practices such as using submersible fuel hose, upgrading your wiring, and replacing fuel filters. With proper installation and maintenance, the DW300 will serve you reliably for many years and thousands of miles.
For those who want an alternative with an even better warranty, the KEMSO 340 LPH fuel pump is worth considering. With a lifetime warranty and comparable performance, it offers exceptional value and peace of mind. Visit KEMSO Racing at https://www.kemsoracing.com/ to learn more about their products and find the right pump for your vehicle.
Remember: Your fuel pump is the heart of your fuel system. Choosing a high-quality, reliable pump is one of the most important decisions you will make when building or upgrading your vehicle. The DW300 fuel pump has earned its reputation as a trusted choice in the performance community, and it will not disappoint.