CarBole Universal 12V Diesel Fuel Pump 5-9 PSI, 35 GPH, 12D

The CarBole Universal 12V Diesel Fuel Pump combines a compact form with steady performance, built around the new Super 12D design. It delivers a measured 5-9 PSI and can move up to 35 GPH, offering reliable fuel flow for common diesel engine setups without overcomplicating the system. This pump is designed to be a practical, straightforward addition to diesel configurations where consistent delivery matters, whether you’re topping off a reservoir or keeping a carburetor supplied on the road.

Where it fits

With a 5/16 inch inlet and outlet, this pump connects to standard 5/16" I.D. hoses, enabling a clean, simple hose fit. For best results, position the unit within 12 inches of the fuel tank to minimize vapor gaps and ensure a predictable supply. Its compact footprint makes it easy to mount in tight spaces—behind panels, near the tank, or alongside a fuel reservoir in many trucks or off-road vehicles.

Compatibility and scope

CarBole positions this pump as a universal solution for most 4-, 6-, and 8-cylinder carburetor diesel engines. It is tailored for diesel-only applications and is not intended for fuel-injected engines. This focus helps maintain straightforward, robust operation in environments where ethanol blends, methanol, or aggressive liquids are not feasible, preserving internal components and reducing complexity.

Note the potential benefits in practical use: in the right setup, the pump can help avoid common fuel delivery problems such as vapor lock and flooding. It can also serve as a dependable booster pump or a transfer pump, moving fuel between tanks or from a reserve supply to the carburetor in controlled, measured bursts.

Key specifications

• New Super 12D design with steady 5-9 PSI fuel pressure
• Flow rate up to 35 GPH for reliable fuel supply
• Inlet/outlet compatibility: 5/16 inch, for standard I.D. hose
• Compact, installation-friendly form factor
• Mounting within 12 inches of the fuel tank recommended
• Diesel-only operation; not for fuel-injected engines; avoid E85 or harsh liquids

Practical usage and tips

• Use as a dependable fuel transfer pump between tanks or as a booster to improve draw at the carburetor
• Ideal for 4-, 6-, and 8-cylinder carburetor diesel applications in trucks, RVs, or off-road rigs
• Follow safety and compatibility notes to preserve internal parts and longevity

Choosing CarBole means opting for a focused diesel pump that supports reliable fuel handling in everyday driving and work scenarios. It’s designed to be a practical, no-nonsense addition to a diesel system where consistent pressure and flow are beneficial, without overpromising results or extending beyond diesel-only use.