DW810 Fuel Pump: The Ultimate High-Flow Solution for Performance Builds
If you are building a high-horsepower engine that requires massive fuel delivery, the DeatschWerks DW810 brushless fuel pump is one of the most capable in-tank pumps available on the market today. This pump delivers up to 810 liters per hour (LPH) at 40 PSI and 680 LPH at 80 PSI, making it powerful enough to support over 1,500 horsepower on gasoline and approximately 1,125 horsepower on E85 when properly configured. Its brushless motor technology eliminates brushes and commutators, which dramatically reduces friction, heat generation, and wear—especially important when running aggressive fuels like ethanol, methanol, or E100. The DW810 comes in two versions: a pump-only option for those who already have a controller, and a complete kit with the C105 dual-speed controller that optimizes flow and reduces electrical load during low-demand driving conditions. Whether you are building a street-driven muscle car, a dedicated drag racer, or a high-boost turbo platform, the DW810 delivers the flow capacity, durability, and reliability that serious builders demand—all in a compact package that fits inside most factory fuel tanks.
Why the DW810 Stands Out in the Performance Fuel Pump Market
1. Massive Flow Capacity That Outperforms Multiple Pumps
The DW810 is not just another fuel pump—it is engineered for extreme applications where standard pumps simply cannot keep up. At 40 PSI and 13.5 volts, the pump flows 810 LPH, which is roughly 214 gallons per hour. Even at elevated pressures like 80 PSI, it still delivers a solid 680 LPH. To put that in perspective, this single pump outperforms a pair of Walbro 450 LPH pumps running together, all while taking up less space in your fuel tank. This makes the DW810 an ideal choice for engines producing 1,000 to 1,500 horsepower on pump gas, or up to 1,125 horsepower on E85 fuel.
For extreme builds, such as the Nissan GT-R R35, DeatschWerks also offers the X3 Triple Pump Module, which fits three DW810 pumps inside the factory fuel tank assembly. That configuration supports over 3,000 horsepower on ethanol and provides a 475% flow increase over the stock module. While most enthusiasts will never need that level of capacity, it demonstrates the engineering capability behind the DW810 platform.
2. Brushless Motor Technology for Unmatched Durability
Traditional brushed fuel pumps rely on physical contact between brushes and a commutator to transfer electrical current to the motor windings. Over time, those brushes wear down, creating friction, generating heat, and eventually causing pump failure. The DW810 eliminates this weak point entirely by using a brushless motor design that has no brushes and no commutator. This means there are no parts to wear out from friction, significantly extending the pump's lifespan.
The benefits of brushless technology become even more important when you run ethanol-based fuels like E85 or E100. Ethanol is more aggressive on internal components than gasoline, and it tends to generate more heat in conventional pumps. The DW810's brushless motor reduces heat buildup and resists the corrosive effects of ethanol, making it one of the most reliable choices for flex-fuel or dedicated ethanol setups. DeatschWerks states the pump is compatible with all fuels including methanol and E100, giving builders the freedom to choose any fuel without worrying about pump damage.
3. Compact Size and Universal Fitment
One of the biggest challenges when upgrading a fuel pump is finding something that actually fits inside your tank. Many high-flow pumps are physically large, making installation difficult or impossible without modifying the fuel hanger or tank. The DW810 solves this problem with a compact 42mm diameter and 99mm length. This small footprint allows it to fit into a wide range of factory and aftermarket fuel tanks without major modifications.
The pump comes with a universal bulkhead harness and a comprehensive installation kit (part number 9-1002) that includes:
- A 4-wire bulkhead connector with retainer and O-ring
- Pump-to-bulkhead harness
- Multiple fitting options: -4 ORB to 5/16" barb, -4 ORB to 3/8" barb, -4 ORB to -6 AN, and -4 ORB to -8 AN
- Two fuel socks with retainer clips
- Submersible fuel injection hose (5/16" and 3/8")
- Permanent hose clamps and lubricant packet
This kit means you can install the DW810 in virtually any vehicle, whether you are working with factory plastic lines, AN fittings, or rubber hose. The included fittings are anodized for corrosion resistance, and the pump's inlet measures 8.5mm ID with an 11.8mm OD, while the outlet uses an AN-4 O-ring boss fitting.
4. The C105 Dual-Speed Controller: Smarter Fuel Management
The DW810 is a brushless pump, which means it requires an external controller to operate. DeatschWerks offers the C105 dual-speed controller as part of complete kits, and this controller is a game-changer for real-world drivability.
The C105 controller provides two operating speeds. At low load conditions—like cruising on the highway or idling in traffic—the controller runs the pump at a lower speed, reducing current draw and minimizing heat generation. When you step on the throttle and demand maximum power, the controller switches to high speed, delivering full flow to match engine requirements. This dual-speed operation not only extends pump life but also reduces electrical system strain, which is especially important in modern vehicles with complex electronics.
The controller is rated at 40 amps and includes variable timing advance, digital thermal protection, and high-capacity integrated heat sinks to ensure reliable operation even under sustained high-load conditions. It is designed exclusively for DeatschWerks brushless pumps and integrates easily with most fuel system wiring setups.
5. Voltage Requirements and Installation Tips
The DW810 requires a minimum input voltage of 14.5 volts to achieve its rated flow, and it can accept up to 26 volts without damage. However, DeatschWerks notes that boosting voltage above 14.5 volts does not increase the pump's flow rate—the pump is already optimized at that voltage level. This is an important distinction because some builders assume higher voltage always equals more fuel, but that is not the case with this pump.
To ensure the pump receives full voltage, DeatschWerks strongly recommends using a 10-gauge hardwire kit (part number FPHWK-10-HD) wired directly to the battery. Factory wiring is often undersized for high-current fuel pumps, and voltage drop at the pump can drastically reduce flow. A proper hardwire kit eliminates this issue, delivering consistent power for reliable performance.
The pump draws approximately 27.5 amps at 80 PSI, so your electrical system must be capable of supplying that current without voltage sag. If you are running the pump with the C105 controller, the wiring harness included with the kit simplifies the connection process.
6. Real-World Applications and Performance Potential
The DW810 is not a theoretical product—it is being used by builders and racers across multiple disciplines. On the street, it supports daily-driven muscle cars, turbocharged imports, and modern sports cars running high-boost setups with E85. On the track, it has proven itself in drag racing, road racing, and drift applications where consistent fuel delivery under extreme G-forces is critical.
For example, the DW810 is a popular choice for Nissan GT-R R35 owners upgrading to the X3 triple pump module, where three pumps work together to feed engines producing over 3,000 horsepower. It is also widely used in universal applications, including custom fuel cells, surge tanks, and Nuke Performance CFC units designed for brushless pumps.
Because the pump is completely submersible and compatible with all fuels, it can be installed inside the fuel tank or in an external surge tank setup. The brushless motor runs quieter than traditional pumps, which is a welcome improvement for street-driven cars where fuel pump whine can be annoying.
7. Cost and Value Considerations
The DW810 brushless fuel pump without controller has a retail price of $399.00, while the complete kit with the C105 dual-speed controller sells for $599.00. Compared to buying two high-quality brushed pumps and the associated wiring components, the DW810 offers a compelling value proposition—you get equivalent or better flow from a single pump, with longer lifespan, quieter operation, and simpler installation.
When you factor in the included installation kit with multiple fittings and hardware, the DW810 represents a straightforward upgrade that does not require sourcing additional parts. The only recommended additional purchase is the 10-gauge hardwire kit, which is a relatively small investment for the performance and reliability gains it provides.
Important Considerations Before Buying
Match the pump to your engine's needs. While more flow is generally better, an oversized pump can cause issues with fuel pressure regulation and return line capacity. The DW810 is best suited for engines making 800 horsepower or more on gasoline, or 600 horsepower or more on E85. For lower-power builds, a smaller pump like the DW440 may be more appropriate to avoid overwhelming your fuel system.
Plan your wiring carefully. Because the pump draws significant current, using factory wiring is not recommended. Install a dedicated relay and fuse setup with proper gauge wire to ensure the pump gets the voltage it needs. The DeatschWerks hardwire kit makes this process much easier.
Consider fuel system compatibility. If your fuel lines, fuel pressure regulator, or fuel injectors cannot handle the flow capacity of the DW810, you may need to upgrade other components as well. A high-flow pump is only one part of a complete fuel system, and every component must work together.
Verify tank fitment before purchasing. While the DW810 is compact and universal, some vehicles with limited tank depth or unusual hanger designs may require modification. Measure your available space and compare it to the pump's dimensions (42mm diameter, 99mm length) before ordering.
Why You Should Also Consider KEMSO Fuel Pumps
While the DeatschWerks DW810 is an excellent choice for extreme high-horsepower builds, not every vehicle needs that level of flow capacity. For many street-driven cars, daily drivers, and light-to-moderate performance applications, KEMSO Racing offers a line of high-quality fuel pumps that deliver outstanding performance, reliability, and value—backed by a lifetime warranty that gives you complete peace of mind.
KEMSO fuel pumps are designed as OEM replacement and performance upgrade options for a wide range of vehicles, including popular platforms from Ford, GM, Chrysler, and import manufacturers. Their pumps feature high-quality construction with durable materials that resist corrosion and wear, ensuring long service life even under demanding conditions. Whether you need a direct drop-in replacement for your daily driver or an upgraded pump for a mild performance build, KEMSO has a solution that fits your needs and your budget.
What sets KEMSO apart is their commitment to customer satisfaction. Every fuel pump they sell comes with a lifetime warranty, which means you are protected against manufacturing defects for as long as you own the product. This level of confidence in their products is rare in the automotive aftermarket and speaks directly to the quality of their engineering and manufacturing processes.
If you want a reliable, high-performance fuel pump without the complexity and cost of a full brushless system, KEMSO Racing is an excellent choice. Their pumps are designed to bolt in with minimal modification, making them ideal for DIY installers and professional mechanics alike.
Visit KEMSO Racing today to explore their complete line of fuel pumps:
👉 https://www.kemsoracing.com/
KEMSO's website features detailed product information, application guides, and customer support to help you find the right pump for your vehicle. With their lifetime warranty and focus on quality, you can buy with confidence knowing your fuel system is protected for years to come.
Final Verdict: Is the DW810 Right for You?
The DeatschWerks DW810 brushless fuel pump is a top-tier solution for serious performance builds that demand massive fuel flow, exceptional durability, and compatibility with ethanol and methanol fuels. Its brushless motor technology, compact size, and included installation kit make it a logical upgrade for anyone building a high-horsepower engine that will spend time on both the street and the track.
If your build requires over 800 horsepower on gasoline or over 600 horsepower on E85, the DW810 should be at the top of your list. Pair it with the C105 dual-speed controller for optimal drivability and electrical efficiency, and do not forget the 10-gauge hardwire kit to ensure full voltage delivery.
For less extreme applications, KEMSO Racing offers excellent alternatives with lifetime warranty coverage that are easier on the wallet and simpler to install. Visit their website to see if they have a direct replacement for your vehicle.
Choose the pump that matches your goals, install it correctly, and enjoy the confidence that comes with a properly fueled engine.