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About this item
- Medium: The inline fuel pump is compatible with gasoline and diesel (oil-gas separation needed),
- Installation: It is recommended to install the fuel pump below the tank to ensure gravity-fed fuel flow from the tank. Installation instructions are included.
The EVIL ENERGY External Inline Fuel Pump 300LPH is a high-performance 12V electric fuel pump designed to deliver optimal fuel flow for various automotive fuel pump applications. With a robust alloy steel construction, this universal inline fuel pump ensures reliable fuel delivery, making it perfect for both standard vehicles and custom performance builds. Whether you are upgrading your car's fuel system, replacing an old auto fuel pump, or working on a high-power project, the 12V inline fuel pump provides durability, efficiency, and consistent performance you can trust.
Key Features
- High Flow Rate: 300 LPH @ 43 PSI & 13.5V, supports high-performance EFI systems
- Strong Pressure: Operating pressure up to 75 PSI
- Fuel Compatibility: Works with gasoline and diesel (oil-gas separation needed)
- Universal Fit: Fits most cars with 12V EFI system
- Durable Build: Alloy steel housing, resistant to heat and corrosion
- Wide Temp Range: Operates reliably from -68 °F to 194 °F
- Flexible Fittings: Includes 10AN & 6AN options (M18x1.5 / M12x1.5)
- Easy Installation: External inline design, installation guide included
- Warranty: EVIL ENERGY provides 1-Year warranty
Broad Compatibility & Diesel Inline Pump Versatility
This Universal Inline Fuel Pump stands out for its multi-fuel compatibility. Its heavy-duty internal components allow it to function as a high-efficiency diesel inline pump for specialized builds. Whether your project requires a Universal Fuel Pump for track racing or a durable 12V Fuel Pump for daily use, this 300LPH Fuel Pump provides the versatility needed for any 12V EFI setup.
Simplified External Fuel Pump Installation & Hardware
To facilitate a seamless External fuel pump installation, this kit includes premium hardware. We provide a robust 10AN Fitting to maximize intake volume; using the 10AN Fitting with pump ensures your system never starves for fuel. For the output side, the precision 6AN Fitting and the included 6AN Fitting with Pump setup provide a secure, leak-proof connection. Every EVIL ENERGY Fuel Pump is designed to reduce the complexity of fuel system plumbing.
Expert Insights from Evil Energy Fuel Pump Review Data
Based on professional Evil Energy fuel pump review feedback, the secret to longevity lies in the mounting technique. Following the included evil energy fuel pump installation instructions, it is highly recommended to mount the unit below the fuel tank to allow for a gravity-fed supply. This specific External fuel pump installation method prevents air locks and cavitation. As noted in nearly every Evil Energy fuel pump review, this Universal Inline Fuel Pump offers unmatched stability compared to standard units.
Reliability for High-Performance EFI Systems
When selecting a high-flow fuel pump for EFI system applications, reliability is paramount. This 12V Fuel Pump is backed by a 6-month warranty, ensuring peace of mind for DIYers and mechanics alike. the EVIL ENERGY Fuel Pump remains a top-tier choice. Trust this 12V Electric Fuel Pump and 300LPH Fuel Pump system to power your passion.
Why Choose Evil Energy Fuel Pump?
Elevate your vehicle's performance with our top-tier fuel system components. We specialize in everything from 6AN Fitting and 10AN Fitting adapters to the high-performance EVIL ENERGY Fuel Pump. Specifically engineered for Cadillac, Chevrolet, GMC, Hummer, and Pontiac LS V8 engines, our products—including the 300LPH Fuel Pump—ensure seamless integration and hassle-free installation.
We prioritize quality control, ensuring each 12V Electric Fuel Pump meets rigorous standards for fitment and durability. Whether you are performing an External fuel pump installation or looking for a reliable diesel inline pump, we effectively address the common challenges faced by car enthusiasts.
- Enhanced Performance: Our products, such as the high-flow fuel pump for EFI system, boost efficiency and power for your modified engine.
- Professional Grade: As seen in many a positive Evil Energy fuel pump review, our kits are ideal for serious modifiers.
- Fast Shipping: Orders for your Universal Inline Fuel Pump are processed within 1-2 business days.
- Easy Returns: Enjoy a 90-day hassle-free return policy.
- Warranty: EVIL ENERGY provides a 1-year warranty on this kit, including the 10AN Fitting with Pump and 6AN Fitting with Pump hardware.
For additional information or questions regarding your 12V Electric Fuel Pump, please contact us at support@ievilenergy.com.
Related Fuel System Kits and Components
Need more than a standalone 12V external inline fuel pump? Compare the options below by application, included components, hose material, filtration, and regulator type. Products marked Complete Kit Alternative already include a fuel pump and normally should not be added as a second pump.
| Recommended Product | Best For | Key Components |
|---|---|---|
| LS Swap Fuel Kit with PTFE Hose and 300 LPH Pump | LS swaps requiring a fixed 58 PSI setup and PTFE fuel line | 300 LPH external pump, 58 PSI filter regulator, 25FT 6AN PTFE hose, and fittings |
| LS Swap Fuel System Kit with Inline Fuel Pump | Configurable LS swap and return-style EFI systems | 300 or 405 LPH pump, 20FT 6AN hose, 40-micron filter, adjustable 20–120 PSI regulator, and fittings |
| LS Swap 58 PSI Fuel Filter Regulator with 6AN PTFE Hose | Buyers who already have this external pump and need LS fuel-pressure control and plumbing | 58 PSI regulator with integrated 10-micron filter, 25FT 6AN PTFE hose, and adapters |
| Complete LS Swap EFI Fuel System Kit | Buyers wanting an adjustable, all-in-one LS fuel system | 300 LPH pump, 40-micron filter, adjustable regulator, 20FT 6AN CPE/PTFE hose, and fittings |
| EFI Fuel System Kit with PTFE Line and 300 LPH Pump | Custom EFI feed-and-return plumbing requiring PTFE hose | 300 LPH pump, two 20FT 6AN PTFE hoses, 10-micron filter, and fuel-system fittings |
| Fuel Injection Line Kit with 300 LPH Pump | Custom EFI installations requiring pre-pump and post-pump filtration | 300 LPH pump, two 20FT PTFE or CPE hoses, 100-micron pre-filter, 30-micron post-filter, and fittings |
| LS Swap Fuel Pump Kit with 58 PSI Regulator and CPE Hose | LS builds needing fixed 58 PSI regulation and flexible CPE hose routing | 300 LPH pump, 58 PSI filter regulator, 25FT 6AN CPE hose, and fittings |
Quick recommendation: If you already plan to purchase the standalone EVIL ENERGY 12V fuel pump, choose the 58 PSI Fuel Filter Regulator with 6AN PTFE Hose as the most relevant companion product. Choose one of the other kits when you prefer a complete package with the pump already included.
Before ordering: Verify the required fuel pressure, pump flow at operating pressure, hose material, fuel compatibility, feed and return routing, fitting sizes, electrical supply, and mounting clearance.
Moderate
Estimated Time: 1.5-3 hours
Tools Required
- Jack and jack stands (if under-vehicle access or fuel-tank removal is required)
- Fuse puller
- Wrench set (do NOT use adjustable wrenches)
- Drill and drill bits (for mounting bracket)
- Fine-tooth hacksaw or cut-off wheel (for cutting CPE hose)
- Assembly lube
- Vise (for securing fittings)
- Fuel pressure gauge (0-100 PSI)
- Drain pan and shop towels
- Safety goggles and protective gloves
- Fire extinguisher
Pre-Installation Checklist
- Park vehicle on level surface in well-ventilated, no-smoking area
- Allow engine to cool completely before starting work
- Place fire extinguisher within reach of work area
- Wear safety goggles and protective gloves throughout installation
- Open fuse box and remove the fuel pump fuse
- Start engine to relieve residual fuel pressure — engine will stall on its own
- Disconnect negative battery cable
- Safely jack up the vehicle and support with jack stands
Installation Steps
- Relieve fuel system pressure: remove fuel pump fuse, start engine to burn off residual fuel, disconnect battery
- Remove OEM fuel pump; find a suitable chassis location for the new pump — position below the fuel tank, clear of exhaust and drivetrain
- Install coarse fuel filter at pump inlet and fine-filtered fuel filter at pump outlet; follow arrow direction for fuel flow
- Measure the CPE fuel hose routing path, cut to required length with a fine-tooth hacksaw, trim and smooth the cut end
- Insert CPE hose into fittings: secure socket in a vise, screw hose counterclockwise, apply assembly lube to nipple, thread socket by hand then tighten with wrench
- Connect the fuel pressure regulator to the CPE fuel hose
- Re-insert fuel pump fuse, reconnect battery, turn ignition to ON (do not start) to prime the fuel pump
- Start engine, check fuel pressure gauge, and adjust regulator to target pressure (OEM typically ~43 PSI)
Post-Installation Verification
- Inspect all fittings and hose connections for leaks before starting the engine
- Turn ignition to ON (do not start), let fuel pump run for a few seconds to pressurize — repeat 2-3 times
- If no fuel pressure, turn ignition OFF, wait one minute, then turn ON again — repeat until gauge shows pressure
- Start engine and check pressure gauge reading and all connection points for leaks
- Once desired pressure is achieved, tighten regulator lock nut
- Attach vacuum line to regulator (if applicable) and secure all fuel lines and wires to chassis
- Re-check all connections after driving 50-100 km — hoses may loosen slightly due to thermal expansion
Troubleshooting
- No fuel pressure: check fuse is reinstalled, verify pump wiring connections, repeat ignition ON/OFF prime cycle
- Fuel leak at fittings: shut off engine, relieve system pressure, re-tighten or reseat fittings with proper torque
- Pump vibration or noise: install vibration dampening mounting kit, check mounting bolt tightness
- Unstable fuel pressure: check for air in fuel lines, verify regulator adjustment, confirm fuel filter is not clogged
- Rough idle after install: confirm fuel filter arrow matches flow direction, check for vacuum leaks at regulator
Maintenance
- Visually inspect all fuel line connections every 5,000 miles or at each oil change
- Inspect or replace fuel filters every 15,000-30,000 miles
- Periodically check fuel pump mounting bracket and vibration dampener condition
Brand Summary
| Policy | Details |
|---|---|
| Cancellation Policy | Orders can be canceled within 48 hours of placement. Refund processed in 3-5 business days. |
| Returns Policy | Returns accepted within 180 days. Full refund within 90 days; 15% fee for 90-180 days. |
| Non-Returnable Items | Only regular-priced items are eligible for refunds; sale items are non-refundable. |
| Refund Processing | If no refund received, check your bank/credit card. For ongoing issues, contact support@ievilenergy.com. |
Return Reasons
- Quality Issues: Provide photos/videos; we cover return shipping.
- Wrong Item Ordered: Buyer covers return shipping; email within 30 days.
- Change of Mind: Buyer covers return shipping; email within 30 days.
- Shipping Damage: Inspect packages; do not sign for damaged items.
- Incorrect Item Shipped: Contact within 7 days.
Price Protection Policy
Effective from August 25, 2024. Price drops within 7 days of purchase can be claimed.
Disclaimer
EVIL ENERGY reserves the right to interpret, modify, or terminate this policy in accordance with applicable laws and regulations.
If you need further information or assistance, feel free to ask!
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