Weapon-R® 958-111-101 - Adjustable Fuel Pressure Regulator

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Universal Fit
Fitment Notes:
  • Not Vehicle Specific
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Product Details

Weapon-R Tanks

Universal Adjustable Fuel Pressure Regulator by Weapon-R®. Weapon-R has developed a compact sized, fully adjustable fuel pressure regulator for high performance vehicles. Carefully designed for maximum performance, is will more than just meet your needs and expectations. This product is built from top-grade materials to ensure high quality and provide years of reliable service.

Weapon-R - Catalog


  • Fully adjustable
  • Capable of supplying fuel to engines in excess of 800 HP
  • Made from 6061 Billet Aluminum
  • CNC machined

Supplying enough fuel to a high-horsepower racing engine is critical, but room is at a premium under the hood of a compact sports car. Weapon-R has the solution with a compact sized, fully adjustable fuel pressure regulator. This regulator is not only small; the ports are threaded so you can tailor the regulator output to any configuration. Use with Weapon-R’s fuel rail adapter to eliminate the factory regulator and get higher fuel flow to the adjustable regulator.

Weapon-R® makes high quality performance parts, at affordable prices, for sport compact cars. All products are carefully designed using the latest computer simulation and modeling techniques, followed by extensive dyno testing. Finally, all parts are rigorously street and race tested to make sure they’ll perform flawlessly in your car. Weapon-R draws on over a decade’s experience, involvement in various forms of motor sports, and their commitment to research and development, to bring you the highest quality and best value performance parts in the industry.

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Warranty Information

Weapon-R Products are covered by a limited lifetime warranty to be free from defects in material and workmanship from the date of purchase by the Original Purchaser. This warranty does not apply to any Products that have been subjected to misuse, mishandling, misapplication, neglect (including but not limited to improper maintenance), improper installation, or alterations.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

Vehicle Fitment

This part is universal

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