Holley 100 GPH HP In-Line Fuel Pump


Holley 100 GPH In-Line Fuel Pump for street-strip carb or EFI applications

Category: SKU: 12-890 Tag:


The Holley HP™ In-Line Billet Fuel Pumps are designed to be the perfect for your carbureted or fuel injected race car, off-road truck, street vehicle,  and more! These fuel pumps use OEM gerotor technology that offers lightweight, quiet operation and 100,000+ mile durability.  Holley HP™ In-Line Billet Fuel Pumps are in a cost-effective package. They are compatible with pump gas, race gas, diesel or E85 and can be used in racing applications with up to 18.5 volt charging systems on engines requiring up to 80 psi.


  • Excellent for use with carbureted or EFI applications
  • Billet aluminum construction for good looks & longevity
  • -8AN O-ring inlet/outlet for high flow and superior sealing
  • Fully submersible in-tank for custom applications, space savings, and less plumbing
  • Compatible with 12V to 18.5V systems (street or race)
  • Current draw at 43psi and 13.5 vdc is 8.6 amps
  • Proven durability beyond 3,000 hours in gasoline or diesel
  • Compact for easy installation on frame rails or other tight areas (7.5″ Long x 3″ Wide x 2.75″ Tall)
  • Weighs only 3.1 pounds
  • NOT designed for use on aircraft of any type



*Pump gas compatible for intermittent or under 90 degree ambient temperature use
Pump gas use recommendations:
• This pump is compatible with pump gas, but is not recommended for street driven vehicles where the ambient temperature is regularly above 90 degrees
• For street driven vehicles in high temps with pump gas, Holley recommends part numbers 12-600 or 12-800 for optimum hot fuel handling
• Proper fuel system engineering is critical for maximum performance. Please see Holley Fuel System Chart for information about proper installation of your fuel system.
Will work with E-85 and Diesel!
These pumps do not have an internal bypass. A bypass style regulator and return line are required.
This pump is not designed to use a standard conical seat style union in the inlet or outlet of the pump. Example: Part # AT981508ERL. Use of this style fitting will block flow and WILL lead to poor performance and pump failure. The ONLY correct fitting to use is a contoured port fitting with an O-ring seal such as :Part # AT985008ERL.