Phantom Apex with Jet Siphon In-Tank Fuel Pump Kit

Phantom Apex with Jet Siphon In-Tank Fuel Pump Kit

Part Number: 18704
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Product Info

P/N 18704 Phantom 340 Apex Pump Kit
The best fuel surge and slosh control for off-road and road racing.
Ideal for late-model Pulse Modulated fuel systems with no return.

Features and Specifications:


  • 340lph version supports – 595hp EFI / Forced Induction  and  725hp EFI / Naturally Aspirated

  • 450lph version supports - 700hp EFI / Forced Induction and 975hp EFI / Naturally Aspirated

  • Low Profile, black anodized, CNC machined top-hat and stainless steel fuel pump hanger assembly

  • ORB-06 Ports – complete with supply, return and vent

  • Fuel resistant baffle / basket (Includes: Foam and Bladder)

  • Integral high flow pre-pump filter

  • Flexible design can be cut to height to fit almost any fuel tank

  • Turbine pump mechanism offers quiet pump operation, high flow capacity and increased durability.

  • Can be used return style with bypass regulator with or without vacuum/boost reference.

  • Fully compatible with return-less fuel systems using pulse modulated FPDM for pressure control.

  • This product is not legal for sale or use on emission-controlled vehicles except when used as a direct replacement part matching OEM specifications.

  • Phantom Bladder Baffles Check Valves recommended for return-less, pulse modulated systems.

Additional information

The Apex Phantom leverages Aeromotive's, advanced, patent-pending Apex Jet-Siphon technology to provide a continuous supply of cool fuel into the Phantom Bladder.  Able to draw fuel from any alternate location in the tank, or from an auxiliary "saddle-bag" tank, the bladder surrounding the pump stays full and the engine has proper fuel flow and pressure regardless of g-forces or vehicle attitude, eliminating engine fuel starvation and related drivability problems.

Ideal for a return style, or a return-less pulse modulated fuel system, the Phantom Apex system is perfect for a daily driver or for all out competition in the most extreme applications; from road racing to running hard in the dunes; for an all-out "BAJA 1000" or "King of the Hammers" , the Phantom Apex is at the heart of a modern, state-of-the-art fuel system.

In true, PWM (Pulse Width Modulated) return-less systems common to late model GM and MOPAR performance engines the Phantom Apex excels, especially when using the appropriate Bladder Baffle kit, allowing the pump to be run without overheating or stalling even at idle and light load, without a regulator or return line, while ensuring the system maintains perfect pressure. This product is not legal for sale or use on emission-controlled vehicles except when used as a direct replacement part matching OEM specifications.

Aeromotive’s Apex Phantom kits are highly recommended for most tanks, including saddle-bag tanks. The Apex Phantom opens the door to OEM convenience but with high horsepower fuel flow rates that only Aeromotive pumps can provide. With the Aeromotive Apex jet siphon your Phantom System will have a continuous supply of fuel from the off-tank or saddle-bag tank into both the Phantom baffle and then overflow into the main tank, so the main tank stays full until the off-tank is empty.  Plus you’ll never have to worry about the Apex re-priming thanks to the ingenious, patent-pending jet siphon design that automatically floods and primes the pump, regardless of whether it gets a gulp of air when the off-tank is low, or even if the off tank runs dry before you get it refilled.

Click Here for more information on the Apex Jet Siphon

Features and Specifications:


  • 340lph version supports – 595hp EFI / Forced Induction  and  725hp EFI / Naturally Aspirated

  • 450lph version supports - 700hp EFI / Forced Induction and 975hp EFI / Naturally Aspirated

  • Low Profile, black anodized, CNC machined top-hat and stainless steel fuel pump hanger assembly

  • ORB-06 Ports – complete with supply, return and vent

  • Fuel resistant baffle / basket (Includes: Foam and Bladder)

  • Integral high flow pre-pump filter

  • Flexible design can be cut to height to fit almost any fuel tank

  • Turbine pump mechanism offers quiet pump operation, high flow capacity and increased durability.

  • Can be used return style with bypass regulator with or without vacuum/boost reference.

  • Fully compatible with return-less fuel systems using pulse modulated FPDM for pressure control.

  • Phantom Bladder Baffles Check Valves recommended for return-less, pulse modulated systems.

Specifications

#18704 - 340 lph #18705 - 450 lph
Series Phantom Apex Phantom Apex
Maximum Flow Rating 340 450
Maximum Pressure 40 40
Fuel Type Gas/E85 Gas/E85
Universal Or Specific Fit Universal Universal
Internal Or External Internal Internal
Pump Design Turbine Impeller Turbine Impeller
Integrated Controller No No
Pulse Width Modulation Compatible No No
Fuel Delivery Type Fuel Injection Fuel Injection
Outlet Type Female Thread Female Thread
Outlet Outside Diameter AN-06 AN-06
Maximum Current Draw 13 15.3
Voltage 12 12
Negative Ground Yes Yes
Wire Quantity 2 2
Wiring Harness Included No No
Terminal Gender Male Male
Terminal Quantity 2 2
Terminal Type Threaded Stud Threaded Stud
Strainer Included Yes Yes
Fuel Sending Unit Included No No
Mounting Bracket Included Yes Yes
Mounting Hardware Included Yes Yes
Seal And Lock Ring Included Yes Yes
Gasket Or Seal Included Yes Yes
Grade Type Performance Performance

Installation Instructions

Instruction Manual
18704 Installation Instructions

Download PDF
Instruction Manual
18705 Installation Instructions

Download PDF

Product warranty

Limited Warranty for Aeromotive Products for the United States of America

Aeromotive, LLC warrant to the original end user purchaser in the United States that the Aeromotive and Waterman Racing Components branded products (“Product(s)”) shall be free from defects in material and workmanship for the warranty durations set forth in the chart below from the date of purchase or delivery, whichever is later.

 Products Warranty Duration
  • Aeromotive marine pumps
2 years
  • All other Aeromotive products
  • Waterman Racing Components products
1 year

 

Because Aeromotive, LLC (collectively, the “Company”) cannot control the quality of products sold by unauthorized sellers, this warranty applies only to Products that were purchased from the Company or the Company’s authorized sellers in the United States, unless otherwise prohibited by law. Company reserves the right to reject warranty claims for Products purchased from unauthorized sellers, including unauthorized Internet sites.

This warranty does not cover any defects due to normal wear and tear, damage due to misuse, alteration to the product, negligence, damage caused by aftermarket applied coatings, discoloration, or corrosion of finished surfaces. This warranty also does not cover damage resulting from collision, improper installation, off-road use, road hazards, the use of exhaust insulating wrap or like products, or rust occurring after installation.

Purchasers of a Product who wish to make a warranty claim based upon an alleged Product defect should email the Company at techs@aeromotiveinc.com the following information: (1) Product subject to the claim, (2) brief description of the alleged defect, (3) date and place of purchase/delivery, (4) proof of purchase (showing when and where the Product was purchased), and (5) pictures or videos of the Product. If you purchased on an online marketplace, please be sure the proof of purchase shows from whom you purchased (this information is available in your order history). In some instances, Company may instruct you to mail the Product to Company for inspection and/or repair; if such instruction is provided, Company will provide you with a prepaid shipping label. You can also contact the Company Monday – Friday, 8AM – 6:30PM CT at (913) 808-2376.

Company will replace or repair a defective Product that is covered by this warranty. This
warranty does not cover the cost of removal or installation. Company will pay for the return shipping of the Product to the purchaser.

There are no warranties which extend beyond those stated herein. ANY IMPLIED
WARRANTIES THAT MAY BE APPLICABLE TO PRODUCTS, INCLUDING IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE
LIMITED IN DURATION TO THE DURATION OF THIS WARRANTY. Some States do not
allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.

UNDER NO CIRCUMSTANCES SHALL THE COMPANY BE LIABLE FOR ANY SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES BASED UPON BREACH OF THIS LIMITED
WARRANTY, BREACH OF CONTRACT OR STRICT LIABILITY. Some States do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights which vary from State to State.

If you have any questions about whether a seller is authorized, please contact us at (913) 808-2376.

This warranty supersedes any warranties stated in product manuals or other written materials.

Effective Date: March 16, 2026

Returns & replacements

Returns:

  • Accepted within 90 days of purchase.
  • Prior authorization required; items must be new and resaleable.
  • Call 913-808-2376 to initiate a return and get an RGA.
  • Ship unused products in original packaging with proof of purchase.
  • You pay return shipping; use a trackable method.
  • Refund excludes initial shipping fees and may include up to a 15% restocking fee.
  • Refunds processed within 5-10 days of return acceptance.

Limits of Responsibility:

  • See Product Warranty page for more info.

Reviews

Phantom Apex with Jet Siphon In-Tank Fuel Pump Kit

Phantom Apex with Jet Siphon In-Tank Fuel Pump Kit

Part Number: 18704
Choose your Pump Option:
Regular price $1,016.32
Sale price $1,016.32 Regular price

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Product Info

P/N 18704 Phantom 340 Apex Pump Kit
The best fuel surge and slosh control for off-road and road racing.
Ideal for late-model Pulse Modulated fuel systems with no return.

Features and Specifications:


  • 340lph version supports – 595hp EFI / Forced Induction  and  725hp EFI / Naturally Aspirated

  • 450lph version supports - 700hp EFI / Forced Induction and 975hp EFI / Naturally Aspirated

  • Low Profile, black anodized, CNC machined top-hat and stainless steel fuel pump hanger assembly

  • ORB-06 Ports – complete with supply, return and vent

  • Fuel resistant baffle / basket (Includes: Foam and Bladder)

  • Integral high flow pre-pump filter

  • Flexible design can be cut to height to fit almost any fuel tank

  • Turbine pump mechanism offers quiet pump operation, high flow capacity and increased durability.

  • Can be used return style with bypass regulator with or without vacuum/boost reference.

  • Fully compatible with return-less fuel systems using pulse modulated FPDM for pressure control.

  • This product is not legal for sale or use on emission-controlled vehicles except when used as a direct replacement part matching OEM specifications.

  • Phantom Bladder Baffles Check Valves recommended for return-less, pulse modulated systems.

Additional information

The Apex Phantom leverages Aeromotive's, advanced, patent-pending Apex Jet-Siphon technology to provide a continuous supply of cool fuel into the Phantom Bladder.  Able to draw fuel from any alternate location in the tank, or from an auxiliary "saddle-bag" tank, the bladder surrounding the pump stays full and the engine has proper fuel flow and pressure regardless of g-forces or vehicle attitude, eliminating engine fuel starvation and related drivability problems.

Ideal for a return style, or a return-less pulse modulated fuel system, the Phantom Apex system is perfect for a daily driver or for all out competition in the most extreme applications; from road racing to running hard in the dunes; for an all-out "BAJA 1000" or "King of the Hammers" , the Phantom Apex is at the heart of a modern, state-of-the-art fuel system.

In true, PWM (Pulse Width Modulated) return-less systems common to late model GM and MOPAR performance engines the Phantom Apex excels, especially when using the appropriate Bladder Baffle kit, allowing the pump to be run without overheating or stalling even at idle and light load, without a regulator or return line, while ensuring the system maintains perfect pressure. This product is not legal for sale or use on emission-controlled vehicles except when used as a direct replacement part matching OEM specifications.

Aeromotive’s Apex Phantom kits are highly recommended for most tanks, including saddle-bag tanks. The Apex Phantom opens the door to OEM convenience but with high horsepower fuel flow rates that only Aeromotive pumps can provide. With the Aeromotive Apex jet siphon your Phantom System will have a continuous supply of fuel from the off-tank or saddle-bag tank into both the Phantom baffle and then overflow into the main tank, so the main tank stays full until the off-tank is empty.  Plus you’ll never have to worry about the Apex re-priming thanks to the ingenious, patent-pending jet siphon design that automatically floods and primes the pump, regardless of whether it gets a gulp of air when the off-tank is low, or even if the off tank runs dry before you get it refilled.

Click Here for more information on the Apex Jet Siphon

Features and Specifications:


  • 340lph version supports – 595hp EFI / Forced Induction  and  725hp EFI / Naturally Aspirated

  • 450lph version supports - 700hp EFI / Forced Induction and 975hp EFI / Naturally Aspirated

  • Low Profile, black anodized, CNC machined top-hat and stainless steel fuel pump hanger assembly

  • ORB-06 Ports – complete with supply, return and vent

  • Fuel resistant baffle / basket (Includes: Foam and Bladder)

  • Integral high flow pre-pump filter

  • Flexible design can be cut to height to fit almost any fuel tank

  • Turbine pump mechanism offers quiet pump operation, high flow capacity and increased durability.

  • Can be used return style with bypass regulator with or without vacuum/boost reference.

  • Fully compatible with return-less fuel systems using pulse modulated FPDM for pressure control.

  • Phantom Bladder Baffles Check Valves recommended for return-less, pulse modulated systems.

Specifications

#18704 - 340 lph #18705 - 450 lph
Series Phantom Apex Phantom Apex
Maximum Flow Rating 340 450
Maximum Pressure 40 40
Fuel Type Gas/E85 Gas/E85
Universal Or Specific Fit Universal Universal
Internal Or External Internal Internal
Pump Design Turbine Impeller Turbine Impeller
Integrated Controller No No
Pulse Width Modulation Compatible No No
Fuel Delivery Type Fuel Injection Fuel Injection
Outlet Type Female Thread Female Thread
Outlet Outside Diameter AN-06 AN-06
Maximum Current Draw 13 15.3
Voltage 12 12
Negative Ground Yes Yes
Wire Quantity 2 2
Wiring Harness Included No No
Terminal Gender Male Male
Terminal Quantity 2 2
Terminal Type Threaded Stud Threaded Stud
Strainer Included Yes Yes
Fuel Sending Unit Included No No
Mounting Bracket Included Yes Yes
Mounting Hardware Included Yes Yes
Seal And Lock Ring Included Yes Yes
Gasket Or Seal Included Yes Yes
Grade Type Performance Performance

Installation Instructions

Instruction Manual
18704 Installation Instructions

Download PDF
Instruction Manual
18705 Installation Instructions

Download PDF

Product warranty

Limited Warranty for Aeromotive Products for the United States of America

Aeromotive, LLC warrant to the original end user purchaser in the United States that the Aeromotive and Waterman Racing Components branded products (“Product(s)”) shall be free from defects in material and workmanship for the warranty durations set forth in the chart below from the date of purchase or delivery, whichever is later.

 Products Warranty Duration
  • Aeromotive marine pumps
2 years
  • All other Aeromotive products
  • Waterman Racing Components products
1 year

 

Because Aeromotive, LLC (collectively, the “Company”) cannot control the quality of products sold by unauthorized sellers, this warranty applies only to Products that were purchased from the Company or the Company’s authorized sellers in the United States, unless otherwise prohibited by law. Company reserves the right to reject warranty claims for Products purchased from unauthorized sellers, including unauthorized Internet sites.

This warranty does not cover any defects due to normal wear and tear, damage due to misuse, alteration to the product, negligence, damage caused by aftermarket applied coatings, discoloration, or corrosion of finished surfaces. This warranty also does not cover damage resulting from collision, improper installation, off-road use, road hazards, the use of exhaust insulating wrap or like products, or rust occurring after installation.

Purchasers of a Product who wish to make a warranty claim based upon an alleged Product defect should email the Company at techs@aeromotiveinc.com the following information: (1) Product subject to the claim, (2) brief description of the alleged defect, (3) date and place of purchase/delivery, (4) proof of purchase (showing when and where the Product was purchased), and (5) pictures or videos of the Product. If you purchased on an online marketplace, please be sure the proof of purchase shows from whom you purchased (this information is available in your order history). In some instances, Company may instruct you to mail the Product to Company for inspection and/or repair; if such instruction is provided, Company will provide you with a prepaid shipping label. You can also contact the Company Monday – Friday, 8AM – 6:30PM CT at (913) 808-2376.

Company will replace or repair a defective Product that is covered by this warranty. This
warranty does not cover the cost of removal or installation. Company will pay for the return shipping of the Product to the purchaser.

There are no warranties which extend beyond those stated herein. ANY IMPLIED
WARRANTIES THAT MAY BE APPLICABLE TO PRODUCTS, INCLUDING IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE
LIMITED IN DURATION TO THE DURATION OF THIS WARRANTY. Some States do not
allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.

UNDER NO CIRCUMSTANCES SHALL THE COMPANY BE LIABLE FOR ANY SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES BASED UPON BREACH OF THIS LIMITED
WARRANTY, BREACH OF CONTRACT OR STRICT LIABILITY. Some States do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights which vary from State to State.

If you have any questions about whether a seller is authorized, please contact us at (913) 808-2376.

This warranty supersedes any warranties stated in product manuals or other written materials.

Effective Date: March 16, 2026

Returns & replacements

Returns:

  • Accepted within 90 days of purchase.
  • Prior authorization required; items must be new and resaleable.
  • Call 913-808-2376 to initiate a return and get an RGA.
  • Ship unused products in original packaging with proof of purchase.
  • You pay return shipping; use a trackable method.
  • Refund excludes initial shipping fees and may include up to a 15% restocking fee.
  • Refunds processed within 5-10 days of return acceptance.

Limits of Responsibility:

  • See Product Warranty page for more info.

Reviews

Phantom Apex with Jet Siphon In-Tank Fuel Pump Kit
Phantom Apex with Jet Siphon In-Tank Fuel Pump Kit
Pump Option:
340 lph
Regular price $1,016.32
Sale price $1,016.32 Regular price

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