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Holley EFI Terminator X Fuel Injectors 522-221X Injectors, EFI, X, 220 lbs/hr, USCAR Plug, EV6 Body, 12V Saturated, 2.85 in. Seat Height, High Impedance, E85 Compatible, Each

SKU: HLY522-221X

Fuel Injectors

Holley EFI Terminator X Fuel Injectors 522-221X Injectors, EFI, X, 220 lbs/hr, USCAR Plug, EV6 Body, 12V Saturated, 2.85 in. Seat Height, High Impedance, E85 Compatible, Each

SKU: HLY522-221X

Fuel Injectors
A$295.27
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

Holley EFI Terminator X fuel injectors feature a precision lapped disc valve, high-quality brass windings, and high-temperature O-rings. These injectors provide excellent linearity with no discernible "bounce" at low pulse widths as commonly found in other injectors. With a wide variety of fuel flow offerings from 42 lb./hr. to 220 lb./hr. you are sure to find an injector that matches your non-emissions-controlled application. Holley EFI Terminator X fuel injectors can also be used with any ECU that utilize high-impedance fuel injector drivers.

Features:

* PICO/EV6-style performance injectors are sold individually or in a set of 8
* High impedance for use with saturated drivers
* Rated injector flow 220 lb./hr. at 43 psi of base fuel pressure
* USCAR injector connector
* 40mm O-ring to O-ring length
* Compatible with many OEM LS intake manifolds
* Easy to install in any Holley EFI Hi-Ram intake, using Holley fuel rail adapter kit

Part Type

Fuel Injectors

Data: v4.2 - Upd: 2026-10-13 18:47:15

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
522-221X
Product Attributes - Part Type
Fuel Injectors
Product Attributes - Product Line
Holley EFI Terminator X Fuel Injectors
Product Attributes - UPC
090127129951
Product Attributes - OEM Replacement
No
Product Attributes - Injector Advertised Flow Rate (lbs./hr.)
220 lbs./hr.
Product Attributes - Injector Advertised Flow Rate (cc/min.)
2,310cc/min.
Product Attributes - Injector Plug Style
USCAR
Product Attributes - Injector Body Style
EV6/Pico
Product Attributes - Driver Type
12V saturated circuit
Product Attributes - Overall Height (in.)
2.85 in.
Product Attributes - Seat to Seat Height (in.)
2.415 in.
Product Attributes - Outside Diameter (in.)
0.970
Product Attributes - Wiring Harness Included
No
Product Attributes - O-Rings Included
Yes
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
High-impedance injectors.

Reference Information

Brand Name/s Holley
StreetFX SKU hly522-221X
SFX Item ID 4783581
Supplier Item Code 4783581
Manufacturer SKU 522-221X
Manufacturer UPC 90127129951
Alternative References HOL522-221X, EV6, 12V, E85

Compatibility

Application Data
  • UniversalYes
    Fuel TypeFLEX
    Application NotesHigh-impedance injectors.
  • UniversalYes
    Fuel TypeGAS
    Application NotesHigh-impedance injectors.
  • UniversalYes
    Fuel TypeMETHANOL
    Application NotesHigh-impedance injectors.

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