Fuel Air Separators

Fuel air separators remove trapped air and vapor from your fuel system, ensuring a steady stream of liquid fuel reaches the carburetor or injectors. They are critical for preventing vapor lock, hesitation, and stalling—especially in hot conditions or high-demand applications.

Our collection includes separators designed for various fuel line sizes and flow requirements, from street engines to race-only builds. When choosing a separator, consider your fuel type (gasoline, ethanol, methanol), line diameter, maximum fuel pressure, and mounting location to ensure proper function.

Key selection factors:

  • Inlet/outlet size compatibility with your fuel system
  • Pressure rating to match your fuel pump output
  • Material compatibility with your fuel's chemical makeup
  • Ease of installation and serviceability

Explore our range to find the right fuel air separator for your vehicle.

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PureFlow AirDog II-5G DF-165-5G Fuel Air Separation System for 6.6L Duramax, showing filters and pump assembly.

$849.00

In stock
PureFlow AirDog II-5G Fuel Air Separation System module with pump, filter, and mounting hardware

$866.00

In stock
PureFlow AirDog FP-150-4G Fuel Air Separation System with pump and filter for Ford 6.4L Powerstroke

$779.00

Low in stock
PureFlow AirDog FP-100-4G Fuel Air Separation System with integrated fuel pump and fuel lines

$748.00

In stock
PureFlow AirDog FP-100-4G Fuel Air Separation System unit for 1989-1993 Dodge 5.9L Cummins

$751.00

Low in stock
PureFlow AirDog FP-150-4G Fuel Air Separation System for Cummins diesel engines

$782.00

In stock
PureFlow AirDog FP-150-4G fuel air separation system with integrated pump, water separator, and fuel filter

$770.00

In stock
PureFlow AirDog FP-150-4G Fuel Air Separation System for 1994-1998 Dodge 5.9L 12V Cummins

$791.00

Low in stock
PureFlow AirDog FP-100-4G Fuel Air Separation System for 2004.5-2024 Dodge/RAM Cummins

$760.00

In stock
PureFlow AirDog FP-100-4G Fuel Air Separation System for 1998.5-2004 Dodge 5.9L Cummins, shown without integrated pump

$720.00

In stock
PureFlow AirDog FP-100-4G Fuel Air Separation System with integrated pump and filters

$769.00

In stock
PureFlow AirDog FP-150-4G Fuel Air Separation System with integrated pump and filter for 2015-2016 Chevrolet 6.6L Duramax
$735.00 $745.00
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PureFlow AirDog FP-100-4G Fuel Air Separation System for 6.6L Duramax
$714.00 $715.00
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PureFlow AirDog FP-150-4G fuel air separation system with pump and filter housing
$735.00 $745.00
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PureFlow AirDog FP-150-4G Fuel Air Separation System kit with pump, filter, and mounting hardware

$761.00

In stock
PureFlow AirDog FP-150-4G Fuel Air Separation System for Chevrolet 6.5L Diesel

$753.00

Low in stock
PureFlow AirDog FP-100-4G diesel fuel pump, filter, and air separation system assembly.
$714.00 $715.00
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PureFlow AirDog FP-100-4G Fuel Air Separation System with pump, filter, and lines for 2001-2010 6.6L Duramax

$738.00

In stock
PureFlow AirDog FP-100-4G Fuel Air Separation System with filters and mounting bracket for 6.5L Diesel Chevrolet trucks

$738.00

Low in stock

Can’t Find the Part You Need?

Our catalog represents only a portion of the automotive products available through our supplier network. If you cannot find a specific part, brand, or application on our website, submit a request below, and our team will help source it for you.

Please include as much information as possible, such as your vehicle's year, make, model, trim, engine, desired brand, or part number, to help us quickly identify the correct product.

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