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SKU: 81-0400
Designed with cutting-edge technology and premium materials, this fuel pump is the top choice for enthusiasts and professionals seeking superior performance for a wide range of applications. Whether you’re upgrading a classic car, powering a generator, or enhancing a motorcycle, the K&N 81-0400 sets the industry standard for low-pressure fuel delivery, making it the best investment for your fuel system needs.
Why K&N Over All Others?
Performance: Delivers a consistent 15 gallons per hour (GPH) at 1-2 PSI, perfectly suited for carbureted engines, ensuring optimal fuel flow without overwhelming your system. Its self-regulating 12-volt design eliminates vapor lock and flooding, providing seamless operation under demanding conditions.
Quality: Crafted in the USA by K&N Engineering, a global leader in performance parts since 1969, this pump features corrosion-resistant housing and a robust design with no bearings or diaphragms to wear out, guaranteeing exceptional durability over cheaper alternatives.
Whisper-Quiet Operation: Unlike noisy, low-quality pumps, the 81-0400 operates silently, enhancing your driving experience while maintaining top-tier performance.
Versatile Compatibility: Compatible with a wide array of fuels, including gasoline, diesel, biodiesel, E85, methanol, ethanol, and alcohol, making it the go-to choice for diverse applications, from vintage cars to marine and powersports vehicles.
Outperforms the Competition: Customer reviews highlight its reliability over inferior Chinese-made pumps, with users reporting instant priming, dependable daily use, and flawless integration with systems like Stromberg 97 carburetors and Weber 32/36 carbs. Unlike others, the K&N pump avoids common failures, such as excessive noise or premature breakdowns.
What’s Included?
The K&N 81-0400 Performance Electric Fuel Pump comes complete with everything needed for a hassle-free installation:
Vehicle Fitment Data
The K&N 81-0400 features a universal design, making it compatible with a vast range of vehicles and applications requiring a low-pressure fuel pump (1-2 PSI). Below is a non-exhaustive list of common fitments based on verified applications and customer feedback:
Note: This pump is ideal for carbureted systems requiring 1-2 PSI. For higher-pressure needs, consider K&N’s 81-0401 (1.5-4 PSI), 81-0402 (4-7 PSI), or 81-0403 (7-10 PSI) models. Not legal for sale or use in California on pollution-controlled vehicles.
Performance Comparison



