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Fitch Fuel Catalyst

Gasoline and diesel fuel degrade during transportation and storage. The Fitch Fuel Catalyst restores fuel to its optimal state for more efficient combustion, which results in increased fuel mileage, more power, and reduced emissions. Cleaner burning Fitch Catalyst treated fuel also keeps engine oil cleaner for extended change intervals, and reduces fuel system maintenance.

1 - 21 of 5001 of 03
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    • Fitch® Fuel Catalyst Drop-In Tank Fuel Catalyst
      (0 reviews)
      # 823
      Drop-In Tank Fuel Catalyst by Fitch® Fuel Catalyst. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive fuel additives that must be continually replenished, you purchase this product once,...
      $141.85
    • Fitch® Fuel Catalyst OEM In-Line Fuel Catalyst
      (5 reviews)
      # 822
      OEM In-Line Fuel Catalyst by Fitch® Fuel Catalyst. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive additives that must be continually replenished, you purchase this product once, for...
      $215.55 - $482.85
    • Fitch® Fuel Catalyst Universal In-Line Fuel Catalyst
      (0 reviews)
      # 820
      Universal In-Line Fuel Catalyst by Fitch® Fuel Catalyst. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike fuel additives that must be continually replenished, you purchase this product once, for...
      $215.55 - $361.85
    • Fitch® Fuel Catalyst Drop-in Fuel Catalyst -
      (0 reviews)
      # 1953542
      Drop-in Fuel Catalyst by Fitch® Fuel Catalyst. Get improved performance, easier starting, reduced emissions, and long term fuel stability with the F5T Fitch Fuel Catalyst. Unlike expensive fuel additives, which must be continually...
      $51.25
    • Fitch® Fuel Catalyst Universal In-Line Fuel Catalyst
      (0 reviews)
      # 1953524
      Universal In-Line Fuel Catalyst (F36G24) by Fitch® Fuel Catalyst. For engines up to 300 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike fuel additives that must be continually replenished,...
      $215.55
    • Fitch® Fuel Catalyst OEM In-Line Fuel Catalyst
      (3 reviews)
      # 1953525
      OEM In-Line Fuel Catalyst (F3824) by Fitch® Fuel Catalyst. For engines up to 300 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive additives that must be continually replenished, you...
      $215.55
    • Fitch® Fuel Catalyst OEM In-Line Fuel Catalyst
      (2 reviews)
      # 1953520
      OEM In-Line Fuel Catalyst (F3624) by Fitch® Fuel Catalyst. For engines up to 300 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive additives that must be continually replenished, you...
      $215.55
    • Fitch® Fuel Catalyst OEM In-Line Fuel Catalyst
      (0 reviews)
      # 1953518
      OEM In-Line Fuel Catalyst (F3424) by Fitch® Fuel Catalyst. For engines up to 300 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive additives that must be continually replenished, you...
      $215.55
    • Fitch® Fuel Catalyst Universal In-Line Fuel Catalyst
      (0 reviews)
      # 1953527
      Universal In-Line Fuel Catalyst (F38G24) by Fitch® Fuel Catalyst. For engines up to 300 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike fuel additives that must be continually replenished,...
      $215.55
    • Fitch® Fuel Catalyst Drop-In Tank Fuel Catalyst
      (0 reviews)
      # 1953561
      Drop-In Tank Fuel Catalyst (FFB08) by Fitch® Fuel Catalyst. For engines under 400 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive fuel additives that must be continually...
      $141.85
    • Fitch® Fuel Catalyst OEM In-Line Fuel Catalyst
      (0 reviews)
      # 1953535
      OEM In-Line Fuel Catalyst (F4836B) by Fitch® Fuel Catalyst. For engines 300-400 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive additives that must be continually replenished, you...
      $271.65
    • Fitch® Fuel Catalyst OEM In-Line Fuel Catalyst
      (0 reviews)
      # 1953534
      OEM In-Line Fuel Catalyst (F4824B) by Fitch® Fuel Catalyst. For engines 300-400 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive additives that must be continually replenished, you...
      $271.65
    • Fitch® Fuel Catalyst OEM In-Line Fuel Catalyst
      (0 reviews)
      # 1953523
      OEM In-Line Fuel Catalyst (F3636) by Fitch® Fuel Catalyst. For engines up to 300 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive additives that must be continually replenished, you...
      $215.55
    • Fitch® Fuel Catalyst OEM In-Line Fuel Catalyst
      (0 reviews)
      # 1953528
      OEM In-Line Fuel Catalyst (F4424B) by Fitch® Fuel Catalyst. For engines 300-400 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive additives that must be continually replenished, you...
      $271.65
    • Fitch® Fuel Catalyst OEM In-Line Fuel Catalyst
      (0 reviews)
      # 1953521
      OEM In-Line Fuel Catalyst (F3624-T) by Fitch® Fuel Catalyst. For engines up to 300 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive additives that must be continually replenished,...
      $215.55
    • Fitch® Fuel Catalyst OEM In-Line Fuel Catalyst
      (0 reviews)
      # 1953526
      OEM In-Line Fuel Catalyst (F3836) by Fitch® Fuel Catalyst. For engines up to 300 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive additives that must be continually replenished, you...
      $215.55
    • Fitch® Fuel Catalyst OEM In-Line Fuel Catalyst
      (0 reviews)
      # 1953531
      OEM In-Line Fuel Catalyst (F4624B) by Fitch® Fuel Catalyst. For engines 300-400 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive additives that must be continually replenished, you...
      $271.65
    • Fitch® Fuel Catalyst OEM In-Line Fuel Catalyst
      (0 reviews)
      # 1953549
      OEM In-Line Fuel Catalyst (F75624BP) by Fitch® Fuel Catalyst. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive additives that must be continually replenished, you purchase this product...
      $361.85
    • Fitch® Fuel Catalyst Universal In-Line Fuel Catalyst
      (0 reviews)
      # 1953533
      Universal In-Line Fuel Catalyst (F46G24B) by Fitch® Fuel Catalyst. For engines 300-400 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike fuel additives that must be continually replenished, you...
      $271.65
    • Fitch® Fuel Catalyst OEM In-Line Fuel Catalyst
      (0 reviews)
      # 1953519
      OEM In-Line Fuel Catalyst (F3436) by Fitch® Fuel Catalyst. For engines up to 300 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike expensive additives that must be continually replenished, you...
      $215.55
    • Fitch® Fuel Catalyst Universal In-Line Fuel Catalyst
      (0 reviews)
      # 1953536
      Universal In-Line Fuel Catalyst (F48G24B) by Fitch® Fuel Catalyst. For engines 300-400 HP. Get improved performance and reduced emissions with the Fitch Fuel Catalyst! Unlike fuel additives that must be continually replenished, you...
      $271.65



    The Fitch Fuel Catalyst is the product of Advanced Power Systems International (APSI), Inc. of Torrington, CT. The company was founded in 1994 by a famous race car driver and inventor John C. Fitch, with the objective of creating a product that would both positively affect the environment and provide an economic benefit to the consumer. Originally conceived to provide gasoline stabilization, the production version of the Fitch Catalyst offered much more.

    Fitch® Fuel Catalyst F.A.Q. Fitch® Fuel Catalyst Warranty Fitch® Fuel Catalyst About

    Many fuel treatments on the market promise better fuel mileage, but they must be added to every tank full of fuel, where they are consumed along with the fuel. Whatever mileage increases you may realize are more than offset by the cost of the additive, which must be continually replenished. Not so with the Fitch Catalyst. The Fitch is a true catalyst, which is a substance that induces a chemical reaction without itself undergoing any permanent change. With the Fitch Catalyst, you pay once and enjoy savings thereafter.

    The Fitch Fuel Catalyst has been reviewed and tested by national automotive and recreational vehicle publications like Four Wheeler, Sport Truck, Muscle Car Review, Diesel Power, Diesel Tech, and others. Results varied, but generally all reported gains in fuel mileage, as well as improved throttle response, increased power, reduced emissions, and resistance to engine knock. The consensus opinion: unlike some devices that promise the world and deliver significantly less, the Fitch Fuel Catalyst works as claimed.


    Fitch Fuel Catalyst Reviews
    Average rating: 5 5 - 6 reviews
    (5)
    APPEARANCE
    EASE OF INSTALLATION
    PRICE/VALUE
    QUALITY
    2008 Chevy Avalanche | Posted by Joshua | (Alsip, IL)

    I was initially skeptical of the claims, but I bought one with hope. Was extremely easy to install (about 20 min). I drive a full size Chevy truck. If I keep my foot out of the throttle, on the highway, I see about a 3-mpg increase (not much in the city). When I put my foot in the throttle, there is a noticeable increase in power. Also, my idle has never been so smooth.

    3 people found this review helpful.
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