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Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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Atlus
1340 Cobb Dr, Unit 1, Eustis, FL 32736
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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.
49 products
49 products
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$849.00
The PureFlow AirDog II-5G DF-165-5G Fuel Air Separation System is engineered for direct installation on 2011-2014 Chevrolet trucks with the 6.6L Duramax diesel engine. This comprehensive system replaces the factory lift pump and filtration with a single unit designed to remove entrained air, vapor, and water from your diesel fuel, along with effective filtration of contaminants. By delivering clean, air-free fuel to the injection pump, the AirDog II-5G optimizes fuel delivery and helps protect expensive fuel system components from premature wear.
- Part Number: A7SABC510
- Vehicle Fitment: Chevrolet 6.6L Duramax (2011-2014)
- System Type: Fuel Air Separation, Lift Pump & Filtration
$866.00
The PureFlow AirDog II-5G Fuel Air Separation System (model DF-165-5G) is engineered to deliver clean, air-free fuel to the injection pump on your Chevrolet 2001-2010 truck equipped with the 6.6L Duramax engine. This advanced system effectively removes entrained air, vapor, and abrasive contaminants from your diesel fuel before it reaches your engine's critical components.
By preventing air and vapor from entering the fuel injection system, the AirDog II-5G helps optimize fuel combustion, leading to improved throttle response, enhanced fuel economy, and a reduction in white smoke. Removing particulates and water protects sensitive injectors and the injection pump, significantly extending the lifespan and reliability of your entire fuel system. This system is identified by Manufacturer Part Number (MPN) A7SABC509.
- Application: Specifically designed for Chevrolet 2001-2010 models with the 6.6L Duramax engine.
- Function: Removes air, vapor, and particulate contaminants from diesel fuel.
- Benefits: Supports fuel system longevity, enhances engine performance, and helps maintain fuel efficiency.
- Product Series: AirDog II-5G (DF-165-5G)
- Manufacturer Part Number (MPN): A7SABC509
$779.00
Improve the performance and longevity of your 2008-2010 Ford 6.4L Powerstroke with the PureFlow AirDog FP-150-4G Fuel Air Separation System. This comprehensive system is engineered to deliver cleaner, air-free fuel to your engine, optimizing combustion and reducing wear on critical fuel system components.
By effectively separating air and vapor from your diesel fuel, the AirDog system prevents cavitation in the fuel pump and injectors, which is a common cause of premature failure in high-pressure common rail systems like the 6.4L Powerstroke. It also removes entrained water and particulate matter, ensuring only the highest quality fuel reaches your engine.
- **Reduces wear:** Protects fuel injectors and pump from premature wear caused by air, vapor, and contaminants.
- **Optimizes performance:** Ensures consistent fuel pressure and flow for optimal engine power and efficiency.
- **Enhances filtration:** Provides superior filtration to keep your fuel system free of harmful particulates.
- **Application:** Designed for 2008-2010 Ford F-250, F-350, F-450, and F-550 Super Duty trucks equipped with the 6.4L Powerstroke diesel engine.
- **Manufacturer Part Number (MPN):** A4SPBF073
$748.00
Upgrade the fuel system in your 1998.5-2004 Dodge Ram 2500/3500 24V (5.9L Cummins) with the PureFlow AirDog FP-100-4G Fuel Air Separation System.
This comprehensive system is engineered to deliver clean, air-free fuel to your engine, addressing common issues like decreased fuel economy, power loss, and premature injector wear caused by air/vapor and contaminants in the diesel fuel. By efficiently separating air and water from the fuel stream and filtering out particulates, the AirDog system ensures consistent fuel pressure and optimal performance for your Cummins powerplant.
- Enhances fuel system efficiency by removing air, vapor, and contaminants.
- Maintains consistent fuel pressure for improved injector longevity and engine performance.
- Integrated fuel pump ensures reliable fuel delivery.
- Designed for a direct-fit installation on 1998.5-2004 Dodge Ram 2500/3500 models equipped with the 24V 5.9L Cummins diesel engine.
- Product Model: FP-100-4G
- Manufacturer Part Number: A4SPBD153
$751.00
The PureFlow AirDog FP-100-4G Fuel Air Separation System is engineered specifically for 1989-1993 Dodge 5.9L Cummins (12V) trucks. This system addresses common fueling issues in older Cummins engines, primarily by eliminating entrained air and vapor from the fuel supply before it reaches the injection pump.
By providing clean, air-free fuel at a consistent pressure, the AirDog FP-100-4G helps optimize combustion and protect critical fuel system components. Removing air bubbles prevents cavitation within the injection pump, leading to more stable fuel delivery and extending the lifespan of your injectors.
- Designed for 1989-1993 Dodge 5.9L Cummins (12V) applications
- Effectively separates entrained air and vapor from diesel fuel
- Ensures consistent fuel pressure to the injection pump
- Contributes to improved fuel system longevity and efficiency
- Manufacturer Part Number: A4SPBD136
$782.00
The PureFlow AirDog FP-150-4G Fuel Air Separation System is engineered for 2004.5-2024 Dodge Ram 24V 5.9L and 6.7L Cummins diesel trucks. This comprehensive system serves as a crucial upgrade to your vehicle's fuel delivery, ensuring your injection pump and injectors receive clean, air-free fuel.
Diesel fuel often contains entrained air, vapor, and various contaminants. The AirDog system effectively removes these harmful elements before the fuel reaches your engine's sensitive components. By eliminating air and vapor, the system stabilizes fuel pressure, allowing the injection pump to operate more efficiently and consistently. This translates to improved fuel atomization, which can lead to better throttle response, increased horsepower and torque potential, and enhanced fuel economy.
Furthermore, the advanced filtration capabilities of the AirDog FP-150-4G system protect your costly injectors from abrasive particles and water, significantly extending their service life. This reduces the risk of premature wear and costly repairs, maintaining the reliability and performance of your Cummins engine for the long haul.
- Manufacturer Part Number: A4SPBD105
$770.00
The PureFlow AirDog FP-150-4G Fuel Air Separation System is designed for 1998.5-2004 Dodge Ram 2500 and 3500 trucks equipped with the 24-valve 5.9L Cummins diesel engine.
This advanced system ensures your engine receives clean, air-free fuel, which is crucial for the optimal performance and longevity of high-pressure common rail (HPCR) injection systems. By removing entrained air/vapor, water, and contaminants from the fuel, the AirDog system helps eliminate cavitation in the injection pump, improves injector lifespan, and can lead to increased horsepower, torque, and fuel economy.
The FP-150-4G features a built-in fuel pump that delivers a steady supply of fuel to the engine, maintaining consistent fuel pressure and flow. Its multi-stage filtration process includes a water separator and a fine micron fuel filter, safeguarding your entire fuel system.
- Manufacturer Part Number: A4SPBD104
- Fits 1998.5-2004 Dodge Ram 2500/3500 24V Cummins (5.9L)
$791.00
Fits 1994-1998 Dodge Ram trucks equipped with the 5.9L 12V Cummins diesel engine.
The PureFlow AirDog FP-150-4G is a comprehensive fuel air separation system engineered to deliver clean, air-free fuel to your engine. This system effectively removes entrained air, vapor, and particulate contaminants from your diesel fuel, preventing common issues like cavitation in the injection pump and premature injector wear. By ensuring a steady supply of dense, pure fuel, it helps restore lost power, improve throttle response, and extend the lifespan of critical fueling components.
- Replaces the factory lift pump and filtration system.
- Designed for 1994-1998 Dodge Ram with 5.9L 12V Cummins engine.
- Manufacturer Part Number: A4SPBD103
- Product Model: FP-150-4G
$760.00
Upgrade your 2004.5-2024 Dodge/RAM truck equipped with the 24V 5.9L or 6.7L Cummins diesel engine with the PureFlow AirDog FP-100-4G Fuel Air Separation System.
This comprehensive fuel delivery and filtration system is engineered to address common issues found in diesel fuel systems, such as entrained air, vapor, and particulate contamination. The AirDog FP-100-4G operates as a demand-regulated lift pump, drawing fuel from the tank and actively separating air and vapor before it reaches the injection pump. This process ensures a consistent supply of clean, air-free fuel at optimal pressure, preventing cavitation in the injection pump and reducing wear on critical fuel system components like injectors.
- Enhanced Fuel Filtration: Delivers highly filtered fuel, protecting the entire fuel injection system from damaging particulates.
- Air/Vapor Separation: Actively removes entrained air and vapor, which can degrade fuel lubricity, reduce power, and cause rough idle.
- Consistent Fuel Pressure: Maintains steady fuel pressure to the injection pump, optimizing fuel atomization and combustion efficiency.
- Component Longevity: Extends the service life of expensive fuel system components, including the injection pump and injectors.
- Manufacturer Part Number: A4SPBD102
$720.00
The PureFlow AirDog FP-100-4G Fuel Air Separation System is specifically engineered to protect and optimize the fuel delivery for your 1998.5-2004 Dodge Ram 2500 or 3500 equipped with the 24V 5.9L Cummins diesel engine.
This specialized unit effectively removes entrained air, vapor, and water from the diesel fuel while also providing critical filtration. By ensuring only clean, de-aerated fuel reaches your injection pump and injectors, the system helps prevent cavitation within the fuel pump, a common cause of premature wear. The robust fuel filtration guards against abrasive contaminants that can damage delicate injector components, leading to extended fuel system component life and a more consistent fuel pressure delivery.
- Fitment: Designed for 1998.5-2004 Dodge Ram 2500/3500 with 24V 5.9L Cummins diesel engines
- Function: Advanced fuel air separation technology removes entrained air, vapor, and water from diesel fuel
- Protection: Provides robust fuel filtration, safeguarding sensitive injection system components from contaminants
- Performance: Helps maintain consistent fuel pressure to the injection pump for optimal combustion
- Note: This system does NOT include an integrated fuel pump; it is designed to work in conjunction with an existing or separately sourced lift pump setup
- Manufacturer Part Number: A4SPBD101
$769.00
The PureFlow AirDog FP-100-4G is an integrated fuel delivery and filtration system engineered for 1994-1998 Dodge Ram trucks equipped with the 5.9L Cummins 12-valve diesel engine.
This Fuel Air Separation System removes air, vapor, and solid contaminants from your diesel fuel supply, ensuring only pure, dense fuel reaches the injection pump. By eliminating aeration, the system prevents cavitation, which is a common cause of premature wear in fuel pumps and injectors. It maintains consistent fuel pressure and volume, critical for optimal engine performance and longevity.
Installing the AirDog FP-100-4G system is a direct upgrade that supports the health of your critical fuel system components. Users typically experience improved throttle response and more consistent power delivery by providing the engine with a steady, clean fuel stream under all operating conditions. This unit is designed to replace or supplement your factory lift pump and filtration system.
- Manufacturer Part Number: A4SPBD100
- Engine Fitment: 5.9L Cummins 12V
- Vehicle Fitment: 1994-1998 Dodge Ram
The PureFlow AirDog FP-150-4G Fuel Air Separation System is engineered to deliver clean, air-free fuel to your 2015-2016 Chevrolet 6.6L Duramax. This system addresses common issues in diesel fuel delivery by effectively removing air, vapor, and entrained contaminants before fuel reaches your engine's injectors.
By ensuring a consistent supply of dense, pure fuel, the AirDog system helps optimize fuel atomization and combustion efficiency. This can lead to improved engine performance and, critically, extend the life of your costly fuel injectors and injection pump by reducing wear from abrasive particles and cavitation from air bubbles.
- Eliminates air, vapor, and contaminants from diesel fuel
- Contributes to improved engine efficiency and performance
- Helps extend the lifespan of fuel injectors and pumps
- Manufacturer Part Number: A4SPBC191
Upgrade your 2015-2016 Chevrolet 6.6L Duramax with the PureFlow AirDog FP-100-4G Fuel Air Separation System. This critical system is engineered to enhance your diesel engine's performance and longevity by effectively removing air and contaminants from the fuel before it reaches the injection pump.
By ensuring a consistent supply of clean, air-free fuel, the AirDog system helps restore lost horsepower and torque, improve throttle response, and can lead to better fuel economy. It also significantly extends the life of costly fuel injection components, such as injectors and injection pumps, by preventing wear caused by aeration and particulate matter.
- Eliminates air, vapor, and contaminants from diesel fuel
- Contributes to increased horsepower and torque
- Improves throttle response and fuel economy
- Extends the life of fuel injectors and injection pump
- Manufacturer Part Number: A4SPBC190
Ensure consistent, clean fuel delivery to your 2011-2014 Chevrolet 6.6L Duramax truck with the PureFlow AirDog FP-150-4G Fuel Air Separation System. This system is engineered to eliminate air, vapor, and contaminants from your diesel fuel, which can significantly impact engine performance and the longevity of your fuel system components.
By preventing air and vapor from reaching your fuel injectors, the AirDog system helps maintain optimal injection timing and spray patterns, leading to more efficient combustion. Removing harmful debris and water protects your expensive injectors and high-pressure pump from premature wear, reducing downtime and maintenance costs.
- Delivers clean, air-free fuel to the engine
- Protects fuel injectors and high-pressure pump from wear
- Designed for 2011-2014 Chevrolet 6.6L Duramax engines
- Manufacturer Part Number: A4SPBC189
$761.00
Upgrade your diesel fuel system with the PureFlow AirDog FP-150-4G Fuel Air Separation System, specifically designed for 2001-2010 Chevrolet 6.6L Duramax trucks. This comprehensive system serves as a powerful lift pump, removing entrained air, vapor, and contaminants from your diesel fuel before it reaches the injection pump.
By ensuring a consistent supply of air-free fuel, the AirDog FP-150-4G helps restore lost horsepower, improve fuel economy, and significantly extend the life of your costly injectors and injection pump. It replaces the factory lift pump (if equipped) and provides superior filtration and fuel delivery pressure for optimal engine performance.
- Eliminates air and vapor from the fuel stream
- Removes water and particulate contaminants
- Maintains consistent fuel pressure to the injection pump
- Enhances engine performance and efficiency
- Extends the lifespan of critical fuel system components
The PureFlow AirDog FP-150-4G system ensures your Duramax receives the clean, dense fuel it needs to run reliably. Manufacturer Part Number: A4SPBC188.
$753.00
Upgrade your 1992-2000 Chevrolet (6.5L Diesel) with the PureFlow AirDog FP-150-4G Fuel Air Separation System. This comprehensive system is engineered to deliver clean, air-free fuel to your diesel engine, ensuring optimal performance and longevity for critical fuel system components.
The AirDog system effectively removes entrained air/vapor, water, and contaminants from your fuel supply before it reaches the injection pump. By eliminating aeration, the system helps prevent common issues such as cavitation, premature wear of injectors, and erratic timing that can occur with aerated fuel.
- Improves fuel pressure and volume at the injection pump.
- Enhances fuel system efficiency and extends component lifespan.
- Designed for direct installation on 1992-2000 Chevrolet 6.5L Diesel applications.
- Manufacturer Part Number: A4SPBC187
Upgrade your 2011-2014 Chevrolet 6.6L Duramax with the PureFlow AirDog FP-100-4G Fuel Air Separation System. This comprehensive system is engineered to deliver clean, air-free fuel to your engine, optimizing fuel delivery and protecting critical components.
The AirDog system functions as a high-performance lift pump and filtration system, effectively removing entrained air, vapor, and particulates from your diesel fuel. By maintaining consistent, air-free fuel pressure, the FP-100-4G helps to extend the lifespan of your injectors and injection pump, which are particularly susceptible to wear from cavitation caused by air bubbles and abrasive contaminants.
Key benefits of installing the PureFlow AirDog FP-100-4G system include:
- Removes entrained air and vapor for consistent fuel density.
- Filters out harmful contaminants, protecting the fuel system.
- Maintains optimal fuel pressure at the injection pump.
- Designed for improved engine efficiency and longevity.
- Manufacturer Part Number: A4SPBC186
This system is a direct-fit upgrade for 2011-2014 Chevrolet 6.6L Duramax applications, integrating seamlessly into your truck's fuel system.
$738.00
Improve fuel system reliability and engine performance with the PureFlow AirDog FP-100-4G Fuel Air Separation System. This comprehensive system is engineered for 2001-2010 Chevrolet 6.6L Duramax trucks to remove air, vapor, and entrained contaminants from your diesel fuel before it reaches the injection pump.
By effectively eliminating air and vapor, the AirDog FP-100-4G system prevents cavitation within the fuel pump, which can lead to premature wear and inconsistent fuel delivery. Cleaner, air-free fuel ensures optimal combustion, helping to restore lost horsepower and torque while extending the lifespan of critical fuel system components like injectors and the injection pump.
- Direct-fit system for 2001-2010 Chevrolet 6.6L Duramax trucks
- Removes air, vapor, and contaminants from diesel fuel
- Helps prevent fuel cavitation and improves injector longevity
- Optimizes fuel delivery for consistent engine performance
- Manufacturer Part Number: A4SPBC185
$738.00
Upgrade your 1992-2000 Chevrolet 6.5L Diesel with the PureFlow AirDog FP-100-4G Fuel Air Separation System. This system is engineered to deliver clean, air-free fuel to your injection pump, enhancing performance and protecting critical fuel system components.
The FP-100-4G system effectively removes entrained air and vapor from your diesel fuel, preventing cavitation and ensuring consistent fuel pressure. By separating water and other contaminants, it helps extend the life of your injectors and fuel pump, which are common failure points in older diesel engines.
- Eliminates air and vapor from the fuel stream
- Separates water and particulate contaminants
- Maintains consistent fuel pressure for optimal injection
- Improves fuel economy and engine performance
- Extends the life of injectors and injection pump
Manufacturer Part Number: A4SPBC184
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