2 Pieces Fuel Injector 27706-07A 994635-3731 2IWP181 for Harley Motorcycle 2007-2021 XL 883 1200 Sportster
This fuel injector is engineered as a direct replacement for the Harley Motorcycle 2007-2021 XL 883 1200 Sportster. 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 |
|---|---|
| 2 Pieces Fuel Injector 27706 | 07A 994635-3731 2IWP181 for Harley Motorcycle 2007-2021 XL 883 1200 Sportster 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: 2IWP181, 27706-07A, 2770607A, 9946353731, 994635-3731 Applications:Fit For Following Motorcycle Models:2007-2007 Harley-Davidson Sportster (EFI) – XL 883R2007-2008 Harley-Davidson Sportster (EFI) – XL 8832007-2008 Harley-Davidson Sportster Custom (EFI) – XL 883C2007-2008 Harley-Davidson Sportster Low (EFI) – XL 1200L2007-2008 Harley-Davidson Sportster Low (EFI) – XL 883L2007-2008 Harley-Davidson Sportster Nightster (EFI) – XL 1200N2007-2008 Harley-Davidson Sportster Roadster (EFI) – XL 1200R2009-2009 Harley-Davidson Sportster Custom – XL 883C2009-2010 Harley-Davidson Sportster Low – XL 883L2009-2011 Harley-Davidson Sportster Low – XL 1200L2009-2012 Harley-Davidson Sportster Nightster – XL 1200N2009-2016 Harley-Davidson Sportster Iron – XL 883N2009-2017 Harley-Davidson Sportster Custom – XL 1200C2010-2017 Harley-Davidson Sportster Forty-Eight – XL 1200X2011-2017 Harley-Davidson Sportster Superlow – XL 883L2012-2016 Harley-Davidson Sportster Seventy Two – XL 1200V2014-2017 Harley-Davidson Sportster Superlow – XL 1200T2016-2017 Harley-Davidson Sportster Roadster – XL 1200CX |
Replaces OEM Part Numbers
2IWP181 • 27706-07A • 2770607A • 9946353731 • 994635-3731 • 2007-2021
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 2IWP181 with 27706-07A?
Yes. Both 2IWP181 and 27706-07A are interchangeable OEM numbers for this part. They refer to the same component with the same specifications, just different part number revisions.
This listing is for 2 pieces – do I need to buy a full set?
This listing includes 2 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 4635 model – is it covered?
The compatibility range for this part includes 4635-3731. The 4635 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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