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K&N Performance Electric Fuel Pump 9-11.5 PSI Diesel K&N Engineering KNN81-0403
K&N Performance Electric Fuel Pump 9-11.5 PSI Diesel K&N Engineering KNN81-0403
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K&N Performance Electric Fuel Pump 9-11.5 PSI Diesel

KNN81-0403
024844350831
Fuel Pumps
20+ Units In Stock - Ships Next Business Day
$ 108.00 $ 94.99
$ 94.99

SKU: 81-0403 | UPC: 024844350831

K&N 81-0403 Performance Electric Fuel Pump 7-10 PSI Diesel

This K&N 81-0403 inline electric fuel pump delivers consistent 34 gallons per hour at 7-10 PSI for diesel and multi-fuel systems. Its universal design works with 5/16-inch fuel lines in trucks, off-road vehicles, and custom diesel setups. Self-regulating operation eliminates vapor lock and flooding while providing quiet, reliable performance across biodiesel, gasoline, E85, methanol, and more.

Key Features

  • High Flow Rate: Pumps 34 GPH between 7-10 PSI to maintain steady fuel delivery under demanding conditions
  • Multi-Fuel Compatible: Handles diesel, biodiesel, gasoline, E85, methanol, ethanol, alcohol, and other fuels without issues
  • Vapor Lock Prevention: Self-priming design stops flooding and ensures smooth starts in hot environments
  • Complete Kit: Includes inline fuel filter and all installation hardware for immediate use
  • Quiet Operation: Universal inline mount fits most applications with minimal noise and vibration

Product Notes

  • Designed for external inline installation on 5/16-inch fuel lines
  • 12-volt operation requires clean power source for longevity
  • Box dimensions 7.25 x 3 x 2.75 inches for compact storage

Installation Notes

  • Professional installation recommended.
  • Mount securely in-line after tank pickup using provided clamps
  • Compatible with rubber or hard fuel lines. check polarity on wiring

This Part Fits

Year Make Model Submodel
Universal Universal Diesel Fuel Systems 5/16" Lines
1989-2023 Dodge/Ram Cummins Diesel Trucks All
1998-2023 Ford Powerstroke Diesel All
1989-2023 GM/Chevy Duramax Diesel All

Why Choose K&N?

  • Over 60 years in performance filtration and fuel delivery
  • Durable construction withstands extreme fuels and pressures
  • Engineered for precise flow in high-demand diesel applications

Frequently Asked Questions

  • Q: Does this fit specific diesel trucks?
    A: Yes, universal design suits most 5/16-inch line systems including Cummins, Powerstroke, and Duramax swaps or upgrades
  • Q: What materials are used in construction?
    A: Rugged steel body with corrosion-resistant internals for diesel and alcohol fuels
  • Q: What is the warranty and install time?
    A: 2-year limited warranty. basic inline install takes 1-2 hours with included hardware

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Secure box 7.25 x 3 x 2.75 inches
  • Weight: 1.5 lbs

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