1. General Specifications
Part Number: 4289311 (also crosses to Delphi FJ10075, ACDelco 217-3029, and others)
Type: Electromagnetic solenoid-operated fuel injector
Fuel System: Sequential Multi-Port Fuel Injection (SFI)
Nozzle Type: Multi-hole design (typically 4 holes for better atomization)
Flow Rate: ~ 22.5 lbs/hr (≈ 240 cc/min) at 43.5 psi (3 bar)
Operating Pressure: Typically 43.5–58 psi (3–4 bar)
Resistance (Ohms): High impedance (~12 ohms) – compatible with most GM PCMs without needing a resistor pack.
Voltage: 12V DC (standard automotive electrical system)
2. Compatibility (Common Applications)
This injector was used in multiple GM engines, including:
GM 3.6L V6 (LLT, LFX engines) – Found in:
Chevrolet Camaro (2010–2015)
Cadillac CTS (2008–2014)
Buick LaCrosse (2010–2016)
GMC Acadia (2012–2017)
GM 2.4L Ecotec (LE5, LAF engines) – Used in:
Chevy Malibu (2008–2012)
Saturn Aura (2007–2010)
3. Key Features
✔ Precision Fuel Delivery – Ensures efficient combustion and reduced emissions.
✔ Durable Construction – Resistant to ethanol-blended fuels (up to E85 in some applications).
✔ Direct Fit Replacement – Matches OEM performance without tuning adjustments.
✔ High-Impedance Design – Works without external resistors, simplifying installation.
4. Symptoms of a Failing 4289311 Injector
Engine Misfires (P0300–P0306 codes)
Poor Fuel Economy
Rough Idle or Hesitation
Fuel Smell or Leaks (if O-rings are damaged)
Check Engine Light (e.g., P0171 – Lean Condition)
5. Replacement Notes
Always replace O-rings (use a light coat of engine oil for installation).
Check fuel pressure before assuming injector failure.
Consider cleaning injectors before replacement (ultrasonic cleaning can sometimes restore function).
What kind of fuel injector will you get from Rsolid ?
1. You’ll get it all with; 100% O-ring replacement for proper sealing, a new Actuator Assembly, Spill Valve, To top it off, every nozzle is tested for 100% proper fuel delivery. It just doesn’t get much better than that.
2. Meticulous testing? You got it! This injector goes through a strict reassembling and testing process for fuel delivery, injection pressure, and timing. If you want more power and reduced emissions, this is the way to go.
3.To put things in perspective, you’re getting proper fit and function because strict OE specifications are met.
There’s no doubt you’ll get exceptional quality and consistency. Why? Each injector is completely disassembled, components are cleaned, and lastly this bad boy is checked for wear and breakage. It comes from the reconstruction of China's top fuel system OEM manufacturing factory, you can't beat it .
