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F4i Fuel Pressure Regulator
F4i Fuel Pressure Regulator
Product images are provided for demonstration purposes only and may display selectable variations and/or options.
  
ALTERNATE VIEWS
Starting Price: $282.00

Price with Selected Options: $282.00


Availability: Usually Ships in 1-2 Business Days
Part Number: 15-401

Pressure Fitting 1 (left side)

None
Plug [ +$8.00 ]
Plug with 1/8 NPT port [ +$10.00 ]
AN-06 Male [ +$10.00 ]
AN-08 Male [ +$10.00 ]
AN-10 Male [ +$10.00 ]
AN-06 Male 90° low profile [ +$29.00 ]
AN-08 Male 90° low profile [ +$29.00 ]
AN-10 Male 90° low profile [ +$29.00 ]
Pressure Fitting 2 (right side)

None
Plug [ +$8.00 ]
Plug with 1/8 NPT port [ +$10.00 ]
AN-06 Male [ +$10.00 ]
AN-08 Male [ +$10.00 ]
AN-10 Male [ +$10.00 ]
AN-06 Male 90° low profile [ +$29.00 ]
AN-08 Male 90° low profile [ +$29.00 ]
AN-10 Male 90° low profile [ +$29.00 ]
Pressure Fitting 3 (left front)

None
Plug [ +$8.00 ]
Plug with 1/8 NPT port [ +$10.00 ]
AN-06 Male [ +$10.00 ]
AN-08 Male [ +$10.00 ]
AN-06 Male 90° low profile [ +$29.00 ]
AN-08 Male 90° low profile [ +$29.00 ]
AN-10 Male 90° low profile [ +$29.00 ]
Pressure Fitting 4 (right front)

None
Plug [ +$8.00 ]
Plug with 1/8 NPT port [ +$10.00 ]
AN-06 Male [ +$10.00 ]
AN-08 Male [ +$10.00 ]
AN-06 Male 90° low profile [ +$29.00 ]
AN-08 Male 90° low profile [ +$29.00 ]
AN-10 Male 90° low profile [ +$29.00 ]
Return Fitting

None
AN-06 Male [ +$10.00 ]
AN-08 Male [ +$10.00 ]
AN-10 Male [ +$10.00 ]
AN-06 Male 90° low profile [ +$29.00 ]
AN-08 Male 90° low profile [ +$29.00 ]
AN-10 Male 90° low profile [ +$29.00 ]
3/8 EFI female for flex fuel sensor [ +$25.00 ]
MAP Reference Fitting 1 (left side)

None (open)
Barb for 3/16" hose [ +$6.00 ]
Barb for 1/4" hose [ +$6.00 ]
Filter [ +$7.50 ]
Push-on fitting / straight [ +$9.17 ]
AN-04 Male / straight [ +$6.00 ]
Plug [ +$4.50 ]
MAP Reference Fitting 2 (right side)

None (open)
Barb for 3/16" hose [ +$6.00 ]
Barb for 1/4" hose [ +$6.00 ]
Filter [ +$7.50 ]
Push-on fitting / straight [ +$9.17 ]
AN-04 Male / straight [ +$6.00 ]
Plug [ +$4.50 ]
Tools

Include 6mL tube of Loctite 567 [ +$9.00 ]

Qty:
Description
 
FITMENT:
  • Universal, any electronic fuel injected engine with a return style fuel system with port or throttle body injection.
  • May be used with direct injection vehicles to regulate fuel pressure to the inlet of the high pressure fuel pump.
  • May be used for inline or deadhead regulation
  • May be used in a series with another F1i, F2i, or F4i to supply multiple pressures and/or reference strategies with one feed line

SPECIFICATIONS AND FEATURES:
  • Pressure Ports: two ORB-8 female and two ORB-10 female (fittings not included)
  • Return Port: ORB-10 female (fitting not included)
  • Auxiliary Port: none
  • MAP Reference Ports: two NPT 1/8" female (fittings not included)
  • Base Pressure range: 25-70 psi
  • Boost Limit: 250 psi
  • FKM/Nomex composite diaphragm is compatible with gasoline, race gas, ethanol, methanol. MTBE will reduce diaphragm life.
  • Not compatible with acetone or brake parts cleaner.
  • Hydrodynamic internal cavity suitable for passthrough regulation
  • Zero chatter design for maximum life expectancy and maintained accuracy
  • Fine Pitch adjustment screw for precise setting of fuel pressure
  • Reversible stainless steel mounting bracket included
What is the key advantage of the F4i over the F2i?
  • Some installations may be simplified with F4i. Despite the higher cost of the F4i, the four pressure ports may eliminate y-blocks and associated fittings/hose/hose ends...which may lead to a faster, cleaner, and/or less expensive installation
  • See drawing on this page for port information.