This Holley EFI fuel injector features a precision lapped disc valve, high-quality brass windings, and high-temp O-rings for excellent linearity without the low pulse-width bounce common in other injectors. Sold individually, it's rated at 83 lb/hr with a tri-cone spray pattern.
Specifications:
- Product Type: Fuel Injector, Individual
- Body Style: EV1, Bosch style connector
- Rated Flow: 83 lb/hr
- Impedance: Low (2.2 Ohm)
- Fuel Type: E-85, Gasoline
- Body Length: 2.85 in.
- O-Ring to O-Ring: 2.415 in.
- Part Number: 522-831
FAQ
What is the rated flow of the 522-831 injector?
83 lb/hr at 43 PSI base fuel pressure.
What driver type does it require?
It's a low impedance injector (2.2 Ohm) designed for peak-and-hold drivers.
What spray pattern does it use?
A tri-cone spray pattern for consistent atomization.

