This is a flow-matched set of 4 professionally remanufactured genuine OEM Hitachi Unisia fuel injectors, part number FBYCS20 / Suzuki 15710-54G30, designed for Suzuki 2.3L applications.
 
These are the original stock injectors used in these engines and are a direct replacement, providing precise fuel delivery, smooth engine operation, and reliable performance.
 
CS Performance is a certified ASNU service center located in northern Minnesota. All injectors are thoroughly cleaned, tested, and flow matched using top-of-the-line ASNU professional equipment to ensure they meet or exceed OEM performance standards.
 
Why choose OEM remanufactured injectors?
Unlike many aftermarket injectors on the market, genuine OEM Hitachi / JECS injectors are built to a higher standard and designed specifically for your application. When properly remanufactured and flow tested, they provide more reliable performance, better consistency, and longer lifespan compared to low-cost alternatives.
 
Flow Matching
The ECU controls your injectors as a set. If injectors are not closely matched, some cylinders can run slightly rich while others run lean.
All of our injector sets are flow matched to within 3% or better, which meets or exceeds the typical factory standard of approximately 5%.
For customers looking for the highest level of precision, we also offer an optional 1% flow matching upgrade with documented test results.
 
Quality and Testing Process
Each injector goes through a comprehensive remanufacturing process, including:
Electrical testing (OHM test)
Full disassembly and inspection
Multiple ultrasonic cleaning cycles
Reverse flow backflushing
Leak testing under pressure
Spray pattern analysis
Flow rate testing and matching
Reassembly with new internal components (filters, O-rings, seals)
Final quality control inspection
 
Fuel Injector Specifications
These injectors are built using the Hitachi Unisia EV14 platform and are designed to meet OEM specifications.
Injector Type
Hitachi Unisia EV14 (Standard Size)
Nozzle Design
12-hole multi-port nozzle
Connector Type
Sumitomo style connector
 
Lifetime Warranty
All of our injectors are backed by a lifetime warranty. If the injectors ever become clogged or fail under normal use, we will clean, test, and service them to restore like-new performance.
 
Fitment
This set fits the following vehicles:
 
2004 Suzuki Aerio 2.3L L4
2005 Suzuki Aerio 2.3L L4
2006 Suzuki Aerio 2.3L L4
2007 Suzuki Aerio 2.3L L4
 
Cross Reference Part Numbers
Hitachi: FJ0032
Hitachi Unisia: FBYCS20
Suzuki: 15710-54G30
Other part numbers:
Autoline: 16-2055
BWD: 67726
GB Reman: 842-12344
GP Sorensen: 800-2155N
SMP: FJ1119
 
Important Note
To ensure long-term performance, we recommend replacing the fuel filter and confirming the fuel system is clean prior to installation. Contamination in the fuel system is the most common cause of injector issues.