Answering your search for an auxiliary diesel fuel tank pump, these five options cover compact inline pumps, complete installation kits, and gravity-fed systems designed for diesel engines. The picks are suitable for diesel-powered lawn equipment, trucks, generators, and auxiliary tank setups. Each product is evaluated for ease of installation, reliability, and compatibility with common diesel systems. The buyer types best served by these choices include DIY enthusiasts, fleet operators needing quick transfers, and off-road or remote-use vehicles requiring reliable fuel boosting. A quick at-a-glance summary follows the intro below.
| Product | Type | Best For | Notes |
|---|---|---|---|
| SOLLON Electric Fuel Pump 12V | Inline Pump | Small to medium auxiliary transfers, boosters | Low pressure 2.5–4 psi |
| ENGINEMAN Universal 12V 5–9 PSI | Inline Pump | High-RPM engines, performance boosts | Includes installation kit |
| ENGINEMAN Super 12S Plus 5–9 PSI | Inline Pump | Same family, longer hose routing | Includes hoses and clamps |
| ENGINEMAN 12V 3–6 PSI Kit | Pump Kit | Carburetor lawn mowers, generators | Comprehensive install kit |
| NipponAsia 11025 Diesel Installation Kit | Gravity-fed Kit | Diesel auxiliary tanks | Valve closure caution during install |
SOLLON Electric Fuel Pump 12V Universal Low Pressure Inline Fuel Pump
The SOLLON pump provides a compact, low-pressure solution suitable for portable or auxiliary diesel fuel systems. Best for users who need a lightweight, versatile booster or standalone pump in tight spaces. The unit lists a 2.5–4 psi output and a 30 GPH flow, with a built-in check valve to reduce backflow. It is a straightforward option for lawn equipment, small engines, ATVs, and boats that run on 12-volt systems. Limitations include its lower pressure range, which may be insufficient for high-demand or long-run fueling without supplemental boosting.
Who it’s best for and why
- Best for: DIY installers and small-to-medium diesel applications where space is limited.
- Why: Lightweight, simple wiring, and a stable flow improve reliability without requiring complex plumbing.
Important caution
Ensure correct orientation and electrical wiring to prevent backflow and overheating. The pump is a low-pressure unit, so avoid using it where higher PSI is necessary for efficient transfer.
ENGINEMAN Universal 12 Volt Electric Fuel Pump 5-9 PSI, 35GPH, Super 12S Plus
This ENGINEMAN model targets higher-performance needs with a 5–9 PSI rating and a 35 GPH flow. It’s better for users requiring steady pressure and reduced risk of lean conditions during acceleration in carbureted diesel engines. A complete installation kit is included, featuring a mounting bracket, filter, hoses, clamps, wiring, and installation instructions. The design aims to be a turnkey solution for a broader range of 12V applications, including cars, trucks, boats, and lawn equipment. A limitation is the potential need for additional line length adjustments in complex setups.
Who it’s best for and why
- Best for: Enthusiasts and professionals who demand more precise fuel delivery for performance-tuned diesel engines.
- Why: Higher PSI and included kit reduce installation time and improve transfer stability.
Important caution
Follow the included wiring diagram and ensure the pump sits within the recommended distance from the tank to avoid vapor lock or air leaks.
ENGINEMAN Universal 12V Fuel Pump 5-9 PSI with 6.56FT Hose
This unit mirrors the prior ENGINEMAN offering but ships with a slightly longer hose and robust hose clamps. It is well-suited for longer routing paths or installations where space around the tank is constrained by vehicle framing. The 3–6 PSI range maintains stable delivery for most auxiliary diesel transfer needs. Best for: owners seeking a flexible kit with reliable performance and easy routing. A caution: ensure hoses are secured to prevent chafing near moving parts.
Who it’s best for and why
- Best for: Applications needing additional hose length and secure connections for diesel transfer or boosting.
- Why: The longer hose helps customize routing while preserving flow and reducing leaks.
Important caution
Check hose compatibility with diesel fuels and confirm clamp tightness after initial operation to prevent leaks.
ENGINEMAN Universal Electric Fuel Pump Kit 12V 3-6 PSI
This kit targets carburetor and lawn-mower diesel transfers with a 3–6 PSI output, matching gravity-fed or booster-style setups. Included components cover a full installation, including fuel line, filters, clamps, fuse, shut-off valve, and tubing. It is designed for easy DIY installation within 30 minutes if mounting points are accessible. Best for: utility vehicles, generators, and small engines where a complete kit reduces the need for separate purchases. Limitation: may require additional mounting hardware depending on vehicle configuration.
Who it’s best for and why
- Best for: Those who want an all-in-one installation package with essential components.
- Why: Consolidates parts for a straightforward setup and reliable operation for diesel transfer or boosting.
Important caution
Verify that the included shut-off valve and inline fuse are installed in a safe, accessible location for quick maintenance or emergency shut-off.
11025 Diesel Installation Kit (NipponAsia)
This gravity-fed installation kit is designed for diesel auxiliary tanks with a 1 1/2″ fill line. It is compatible with select diesel-equipped trucks and SUVs from Ford, Chevy, GMC, and Dodge from model years listed. The kit’s gravity feed supports reliable fuel transfer without requiring a pump in some setups. A caution is to close the valve securely during installation to prevent spillage, as diesel handling requires careful valve control.
Who it’s best for and why
- Best for: Diesel coaches and heavy-duty trucks that rely on gravity feed to move fuel from an auxiliary tank.
- Why: Simple, passive transfer method reduces mechanical complexity and power draw.
11025 Diesel Installation Kit Auxiliary Fuel Tank (JURPLIX)
The JURPLIX kit provides a robust gravity-fed solution for multiple diesel platforms, including Ram, Silverado, F-Series, and Sierra models from the specified years. It includes a shut-off valve, rollover valve, aluminum tee, PTFE tape, clamps, and more, enabling a modular approach to fuel routing. Best for: owners who want a complete gravity-fed system that pairs with an auxiliary tank. A caution: verify compatibility with your vehicle’s fill line diameter and ensure all connections are torque-stable to prevent leaks.
Who it’s best for and why
- Best for: Fleet owners or long-haul users needing a reliable gravity-fed kit across several vehicle platforms.
- Why: The included hardware supports customized installations and reduces field adaptation time.
Buying Guide: Key Considerations for Auxiliary Diesel Fuel Tank Pumps
- Fuel type and compatibility: Confirm the kit supports diesel and matches your vehicle’s engine type (carbureted vs. modern injected engines).
- Pressure and flow: Choose PSI and GPH to match your transfer needs and ensure stable fuel delivery under load.
- Installation method: Inline pumps are compact but require routing; gravity-fed kits are simpler but rely on tank geometry.
- Included components: Kits with hoses, clamps, filters, and fuse simplify setup and reduce extra purchases.
- Durability and environment: Look for oil- and ethanol-resistant hoses and robust mounting hardware for field use.
- Safety and spill prevention: Use valves and shut-offs appropriately; follow diesel-handling best practices to avoid spills.
- Maintenance access: Place components for easy inspection, filter replacement, and battery wiring checks.
FAQ
- What is the typical PSI range for auxiliary diesel pumps? Most inline pumps use 3–9 PSI; gravity-fed systems do not rely on pump pressure.
- Do these pumps require professional installation? Many kits are designed for DIY installation with provided instructions, though some configurations may benefit from professional help.
- Can these pumps transfer fuel from an auxiliary tank to a vehicle tank? Yes, inline pumps and booster kits can move fuel to an engine’s fuel system when configured properly.
- Are there safety concerns with diesel fuel pumps? Yes—handle diesel with care, close valves during installation, and ensure leak-free hose connections and secure mounting.
- Will these pumps work with gasoline engines? Some units are listed for gasoline and diesel; verify compatibility before purchase.
- What’s the advantage of a gravity-fed kit? Gravity-fed systems reduce reliance on an electric pump and simplify installation in certain vehicle configurations.