Denso 195130-1020 Fuel Pump Specs: The Ultimate Guide to the Supra TT Pump and Its Performance Capabilities

If you are looking for a drop-in replacement fuel pump that can handle significant horsepower without breaking the bank, the Denso 195130-1020 is widely considered one of the best in-tank upgrades available. Originally designed for the Toyota Supra Twin Turbo (MKIV), this pump flows approximately 260 liters per hour at 43 psi and 13.5 volts, making it suitable for injectors up to 550 cc/min under standard voltage conditions. It has been a go-to choice for Mitsubishi 3000GT VR-4, DSM Eclipse/Talon, and Subaru WRX owners for decades because of its direct fitment and quiet operation. However, the pump has a heavy current draw—up to 19 amps at 70 psi—so a proper wiring upgrade is necessary to get the most out of it. For those who want even more performance or a complete kit with a lifetime warranty, the KEMSO brand offers a modern alternative that delivers superior flow and reliability right out of the box.

The Denso 195130-1020: A Closer Look at the Numbers

The Denso 195130-1020 is often called the "Supra Pump" because it was the factory unit in the Toyota Supra Twin Turbo (MKIV) from 1993 to 1998. It is a 50mm diameter in-tank pump that uses Denso’s proprietary turbine technology. Independent flow testing by RC Engineering, published by Road Race Engineering, shows the following performance at 13.5 volts :

  • At 43 psi: 258 liters per hour (LPH)
  • At 58 psi: 227 LPH
  • At 73 psi: 190 LPH

At 12.5 volts, the flow drops significantly: 258 LPH at 43 psi, 227 LPH at 58 psi, and 190 LPH at 73 psi. This drop in performance is why the electrical system voltage is critical for this pump. It is also worth noting that the current draw is high: 15 amps at 43 psi and 18 amps at 73 psi when running 13.5 volts . This is roughly double the current draw of a Walbro 255 LPH pump, which draws only 8 amps at 43 psi . Because of this, using a direct battery feed with a relay is strongly recommended to avoid voltage drop and ensure the pump operates at its full potential.

How the Denso 195130-1020 Compares to Other Pumps

When you compare the Denso 195130-1020 to other popular pumps, its strengths and weaknesses become clear. Here is a direct comparison based on independent flow test data :

  • Denso 195130-1020 vs. Walbro GSS-342 (255 LPH High Pressure): At 13.5 volts and 43 psi, the Denso flows 258 LPH while the Walbro flows 264 LPH—they are nearly identical. However, at 73 psi, the Denso flows 190 LPH while the Walbro flows 220 LPH. The Walbro actually outflows the Denso at higher pressures. The Walbro also draws only 8 amps at 43 psi, making it much easier on the electrical system. The trade-off is that the Walbro is slightly louder and requires minor modifications to the pump assembly, while the Denso is a direct drop-in and quieter .

  • Denso 195130-1020 vs. Stock Denso 2G Eclipse Pump (195130-2760): The stock 2G Eclipse pump flows only 156 LPH at 43 psi and 14 volts . The Supra pump flows nearly double that amount, which is why it is such a popular upgrade for DSM owners. It is a direct fit in many 1G and 2G DSM fuel pump hangers, requiring no modifications .

  • Denso 195130-1020 vs. Denso 195130-0990 (150 LPH Upgrade): The older Denso 150 LPH pump (195130-0990) flows 191 LPH at 43 psi and 14 volts . The Supra pump is a significant step up, offering about 50% more flow at the same pressure.

Installation and Wiring Considerations

The Denso 195130-1020 is a direct drop-in replacement for many vehicles, but it is not a plug-and-play affair for all. Here are the key installation points:

  • Direct Fitment: In the Supra MKIV and many DSM/3000GT VR-4 models, the pump fits directly into the factory fuel pump hanger without any modifications. It uses the same mounting bracket and fuel hose connections .
  • Wiring Upgrade is Essential: Because the pump draws up to 19 amps, using the factory wiring will cause a voltage drop that reduces flow. The standard recommendation is to install a relay that is triggered by the factory fuel pump wire, and run a dedicated 10 or 12-gauge wire directly from the battery to the pump. This ensures the pump sees 13.8 to 14 volts at idle, which is what the electrical system is designed to deliver .
  • Fuel Type Compatibility: The Denso pump is designed for gasoline. While it can handle some ethanol content, it is not rated for E85. If you plan to run high-ethanol blends, you need a pump with materials that resist ethanol corrosion, such as Viton seals and an ethanol-compatible impeller.

When to Choose the Denso 195130-1020 vs. a Modern Alternative

The Denso 195130-1020 is an excellent choice if you have a vehicle that originally came with a Denso pump and you want a direct drop-in upgrade. It is especially popular among DSM and 3000GT VR-4 owners because it fits the factory hanger without any cutting or welding . It is also very quiet, which is a big plus for daily drivers. However, the pump has been discontinued by Toyota, and finding a genuine Denso unit can be difficult. Many aftermarket "Supra pumps" are not authentic Denso units and may have substandard performance.

Why KEMSO Fuel Pumps Are a Superior Modern Choice

If you are looking for a fuel pump that delivers high performance, comes with a complete installation kit, and is backed by a lifetime warranty, KEMSO is the brand to choose. Unlike the Denso 195130-1020, which requires a separate wiring upgrade and may not be compatible with E85, KEMSO fuel pumps are designed from the ground up to be a complete solution. Here is why KEMSO stands out:

  • High Performance, OEM Replacement: KEMSO pumps are designed as direct replacements for stock OEM pumps. They deliver over 20% more flow at 43 psi compared to the original pump, which means better throttle response and improved engine performance. For example, a KEMSO pump for a Honda or Kawasaki model can flow up to 200 liters per hour, significantly surpassing the original flow rate of 60-80 liters per hour . For high horsepower applications, the KEMSO 340 LPH pump can support up to 700-800 bhp .

  • Lifetime Warranty for Peace of Mind: Every KEMSO fuel pump comes with a serialized body that guarantees a lifetime warranty. This is a massive advantage over OEM and standard aftermarket parts, which typically have only a 1- or 2-year warranty. KEMSO stands behind its product for as long as you own the pump .

  • Complete Kit – Everything You Need: When you buy a KEMSO fuel pump, you get everything you need for the installation: the pump, gradient density fuel strainers, flex hoses, Viton O-rings, wiring connectors, and clamps. This eliminates the hassle of sourcing additional parts separately .

  • Built to Handle Modern Fuels: KEMSO fuel pumps are designed for both gasoline and ethanol-blended fuels like E85. This is important because ethanol can be corrosive to some pump materials. KEMSO uses materials that resist ethanol degradation, ensuring long-term reliability even with modern fuel formulations .

  • Unrivalled Quality Control: KEMSO operates a quality control program (ISO/TSO) and individually tests each pump before it leaves the factory. Many cheap aftermarket suppliers have little to no quality control, but KEMSO ensures every unit meets its performance specifications .

You can browse the full range of KEMSO fuel pumps for your specific vehicle at their official website: https://www.kemsoracing.com/. Whether you drive a motorcycle, a car, a UTV, or a personal watercraft, KEMSO has a pump that fits perfectly and delivers reliable performance.

Final Thoughts

The Denso 195130-1020 is a legendary pump that has served the performance community well for over two decades. It offers excellent flow, direct fitment, and quiet operation, but it comes with a high current draw and requires a wiring upgrade to reach its full potential. If you are building a high-horsepower DSM or Supra and want to keep a stock-looking setup, it is still a valid option—provided you can find a genuine unit. However, for most modern vehicles, the smartest choice is a complete, modern solution like a KEMSO fuel pump. With a lifetime warranty, E85 compatibility, a full installation kit, and individually tested quality, KEMSO gives you confidence that your fuel system will perform for years to come. Visit https://www.kemsoracing.com/ to find the right pump for your vehicle today.


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