Technical Specifications & Fitment Guide (Must Read)

1. Important Note on Plastic Band Color

①Appearance Notice: The color of the plastic retaining band at the top of the fuel injector is random (may be Brown, Gray, or other colors).

②Core Logic: The band color is simply a visual variation from different production batches. It has NO correlation with the injector model, flow rate, or performance version.

③Buyer Advice: Please ignore the band color. It may differ from your original old part, but this will not affect installation or performance.
Please always use the OE Part Number as the sole standard for identification.

2. Flow Rate Compatibility & ECU Tuning Instructions

This product corresponds to OE Part Numbers: 27609-01B / IWP-043 (4.3 g/s High-Flow Version).

If your original part is 27609-01 or 27609-01A:

①Physical Fitment: Direct replacement (Plug & Play in hardware).

②Technical Difference: The flow rate of this model (4.3 g/s) is higher than the early 01/01A versions (3.75 g/s - 3.91 g/s).

③Tuning Suggestion: Due to the increased fuel delivery, your vehicle may require an ECU Re-tuning/Remapping after installation to shorten the Injection

Pulse Width (Injection Time). While some ECUs may automatically adapt through closed-loop trim,

manual adjustment is recommended based on actual engine performance.

④Risks if Not Tuned: Failure to tune may lead to a "Rich" fuel mixture, increased fuel consumption, or unstable idling.

If your original part is already 27609-01B or IWP-043:

Direct replacement; no additional calibration or modification is required.

3.Pre-purchase Confirmation

①Unsure about Compatibility? If you are uncertain whether your specific motorcycle model requires ECU tuning, or if you cannot verify your original OE part number, please contact us via the platform's messaging system before placing your order.

②Acceptance of Variations: If you cannot accept minor cosmetic differences (such as the plastic clip color) or if you do not have the technical means to perform an ECU re-tune/remap (if required),
please think twice before purchasing. We aim for total transparency to ensure you get the right part for your performance needs.

Specification:
Alternate/OE Part Number(s): 27609-01B

Part Number: IWP-043 / IWP043

Interchange OE Number: 27609-01B, 27609-01A, 27609-01

Flow Rate: 4.3 g/s (Approx. 330cc/min @ 3 Bar)

Nozzle Type: 4-Hole Disc (Superior Atomization)

Plug Type: EV1 / Mini-Timer

Resistance: 14.5 Ohms (High Impedance)

Fitment：

FOR Harley-Davidson

Package:

1x  Fuel Injector 27609-01B/IWP-043

Direct Upgrade: This 4.3 g/s (27609-01B) unit is the official Harley-recommended upgrade for models originally using 3.91 g/s (27609-01).

ECU Tuning: For 100% optimized throttle response on early 88ci or 95ci engines, a minor ECU re-map is recommended but not always mandatory for stock configurations.