4 Pieces Fuel Injector 16600-AA230 FBYCG50 for Subaru Legacy MK IV Forester Impreza 2.0L 2003-2009
This fuel injector is engineered as a direct replacement for the Subaru Legacy MK IV Forester Impreza 2.0L 2003-2009. Manufactured to meet or exceed OEM specifications, it delivers reliable performance in demanding conditions. Each unit is tested for fuel flow, pressure rating, and durability before leaving the factory to ensure consistent quality across every order.
Vehicle Compatibility
| Application | Details |
|---|---|
| 4 Pieces Fuel Injector 16600 | AA230 FBYCG50 for Subaru Legacy MK IV Forester Impreza 2.0L 2003-2009 Condition: New Aftermarket Part Note: We recommend replacing the entire set of fuel injectors to ensure the engine’s optimal performance. Due to differences in oil output and atomization concentration between genuine and aftermarket parts, they should not be mixed. Replacing the entire set of injectors helps avoid potential issues. Replacement Part Number: 16600-AA230, 16600AA230, FBYCG50 Applications: Fit for Subaru Vehicle: Legacy MK IV 2.0L AWD 2003-2009Forester 2.0L 2005-2007Impreza 2.0L 2005-2007 |
Replaces OEM Part Numbers
16600-AA230 • 16600AA230 • FBYCG50 • 2003-2009
Signs You Need a Replacement
If your equipment is showing any of these symptoms, the injectors & nozzle may be the cause:
- Rough idle or misfire — Uneven fuel delivery from a worn injector causes the engine to shake at idle. On engines, this is often accompanied by a knocking sound under load.
- Black or white exhaust smoke — Black smoke means excess fuel; white smoke indicates incomplete combustion. Both point to injector spray pattern degradation.
- Loss of engine power — A single failing injector reduces cylinder output. Multi-cylinder engines lose noticeable power when one injector flows less than the rest.
- Increased fuel consumption — Poor atomization means the engine burns more fuel to produce the same power. Monitor your fuel burn rate as an early warning sign.
- Hard starting or no start — If the injector doesn’t deliver fuel on cranking, the cylinder won’t fire. This is especially common in cold weather with worn nozzles.
- Fuel in engine oil (dilution) — Fuel leaking past the injector seat seal contaminates the crankcase oil. If the oil level rises or smells of diesel, inspect the injectors immediately.
Replace as a Set
Replace all injectors as a set whenever possible. On engines, mixing old and new injectors creates uneven fuel delivery — the new injectors compensate for the worn ones, shortening their life. When installing, use new copper sealing washers and torque to the specification in the service manual. After installation, run the engine at idle for 5 minutes to bleed air from the fuel system, then check for leaks at each injector connection before putting the machine under load.
Frequently Asked Questions
Can I cross-reference 16600-AA230 with 16600AA230?
Yes. Both 16600-AA230 and 16600AA230 are interchangeable OEM numbers for this part. They refer to the same component with the same specifications, just different part number revisions.
My engine code is AA230 with a 2.0L displacement – is this the right part?
Yes. Engine code AA230 with 2.0L displacement is within the supported range for this part. The full list of compatible engine codes includes: AA230. Confirm your engine code on the data plate attached to the engine block.
This listing is for 4 pieces – do I need to buy a full set?
This listing includes 4 units. For best results, replace all injectors at the same time rather than one at a time. Mixing old and new units causes uneven fuel delivery and shortens the life of the new parts.
My vehicle is a 2003 model – is it covered?
The compatibility range for this part includes 2003-2009. The 2003 model year falls within this range, but verify the engine code and body type match. Mid-year production changes sometimes mean two vehicles from the same model year use different parts.
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