300LPH inline electric fuel pump Universal Fitment & Use Cases (Gasoline Only)
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Universal external inline installation
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EFI gasoline applications
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Ideal for:
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Turbo / supercharged builds
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Engine swaps
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Fuel system upgrades
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Replacement for weak in-tank pumps (with proper plumbing)
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⚠️ Not for diesel or E85 unless otherwise rated. Verify system requirements before install.
Key Specs & 300LPH inline electric fuel pump Features
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Flow Rate: 300 LPH (high flow)
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Voltage: 12V
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Pump Type: External inline electric fuel pump
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Application: Universal EFI gasoline systems
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Design: Compact, high-output motor for consistent pressure under load
Designed to maintain steady fuel delivery at high demand, where stock pumps tap out.
Performance & Reliability Benefits
Fuel delivery is the foundation of power. Lean conditions kill engines—especially under boost. This EVIL ENERGY pump is built to keep injectors fed when airflow goes up.
Benefits include:
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Supports higher horsepower applications
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Prevents fuel starvation under boost/load
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Improves pressure stability across RPM range
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Faster throttle response
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Reliable operation for street or performance use
It’s not a gimmick. It’s the difference between pulling clean and lifting.
Installation & Safety Notes
As an external inline pump, proper installation matters.
Recommended best practices:
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Mount close to the fuel tank, below fuel level when possible
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Use quality fuel hose rated for EFI pressure
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Install a pre-filter before the pump and a post-filter after
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Ensure solid electrical grounding and relay-based power supply
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Verify fuel pressure after installation
Professional installation is recommended for modified or boosted setups.
Product description
More Product Options
 External Fuel Pump 300LPH |
 External Fuel Pump Kit 300LPH |
 Intank Fuel Pump 255LPH |
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Test Flow 300 LPH & 43 PSI (13.5V) |
Test Flow 300 LPH & 43 PSI (13.5V) |
Test Flow 255 LPH & 43 PSI (12V) |
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Application EFI system |
Application EFI system |
Application EFI system |
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Material Aluminum |
Material Aluminum |
Material Aluminum |
Why Buy from Pro Street Online
At Pro Street Online, we carry parts that actually work in real builds—not just catalog filler. The EVIL ENERGY 300LPH inline pump is a proven, cost-effective solution for enthusiasts who need high flow without nonsense.
If your engine is asking for more fuel, this is how you answer.
Ali Woodard –
Great pump, way more quieter than my old pump, after reading some reviews I almost didn’t purchase it because people were saying it’s loud. Not on my application it’s perfect and gets the job done.
Daniel W. –
The best customer service I have ever experienced! I purchased this pump a month ago for a project Prelude I am building and let me just say this pump is solid, strong, and has no problem producing the pressure and flow needed. It even came with NPT to AN fittings to make life so much easier. Hooked it right up to all my new fuel lines. I am currently tuning the Prelude and ran into a couple issues which is expected. The fuel pump was making some odd noises and ended up popping a fuse. I contacted Evil Energy and they explained that the current load for this pump at 60+ PSI was going to be around 15 amps. My original pump never needed more than 10 amps. They also answered a few questions regarding my current setup and said they believe I may have a bad pump. A new pump has already been shipped out and on the way to me. Wow! That’s incredible customer service and the fact that they replied to my questions in less than a day and even offered helpful input for my project makes it even greater. I may be having a few issues with my pump but it’s also installed on a 1987 Honda that was known for rust contaminating the fuel system and I have replaced just about everything on it but I am still very happy that I chose this company. They are taking care of me whether the error is on my side or theirs. Thats good business, and being a business man it means lot to me. I will definitely be purchasing more products from Evil Energy and will let my fellow car builders know the wonderful treatment and product I have received. Thank you Evil Energy! You guys are great and I look forward to the future business we will be doing together. If you send me some stickers I will advertise for you on all of my builds!
S.D. –
* changing my review to one star. This project is still in the project stage and I have run the engine maybe a dozen times just for testing in my shop. I have never driven it.* And now the pump has failed. I have a brand new fuel cell, brand new fuel lines, I’m running the recommended filters before and after the pump and using the fuel pressure regulator. All by the same company, evil energy. But it has failed completely.. it started running erratically , then when it would run it was struggling and a day or two later it won’t work at all, just hums.I’ve reached out to the company for help and have not received any response. I requested a replacement, but have not heard back. Maybe I’m being impatient but it’s on the third day since I reached out to them and no response.I’m still in the build stage but the pump works fine, it is very loud just like they all are. I don’t know why they can’t quiet it down. I installed it towards the back of the frame and used a rubber isolator, I’m running 60 PSI no problem, I use their pressure regulator for this.
Larry Dally –
Was an easy install and ir the second one I have used , great quality and all parts are included
Amazon Customer –
Re: Evil Energy 044 Fuel Pump – Only one correct sized electric terminal nut of two supplied with the pump actually fit; S/B M4-0.7 and M5-0.8.I haven’t run the unit yet, but some of the quality reviews combine with lack of attention to every detail is now belatedly making me anxious.With regard to poor instructions mentioned by some reviewers, I noted for example the requirement for two o-rings for the connecting ORB AN fittings. Since that type of fitting always has one rubber o-ring, does that instruction mean the addition of a supplied copper closest to the pump for a total of two, or to use of one rubber and two copper. Since I preferred more thread depth, I assumed one copper closest to the pump rather than two copper o-rings, plus the standard rubber o-ring.Off to the hardware store to purchase the missing correct sized nut.
Joey –
These dudes saved me again. 93 honda relay blew, firing whole system. They got this to me in less than 24hrs, package better than others I bought running great right now.
Robert F. –
Great product. Works great on my LS-1.
William davis –
Perfect for a derby car
Carrie –
Great
Worked great
Sharon Gavigan –
Works great
Install was easy – ensure you purchase the bracket. Working great so far