OEM replacement reference 27400065. S&S fuel injectors offer high quality and excellent value high performance fuel injectors for Harley Davidson® V-Twin engines. Each injector is individually tested and flow-matched dynamically to within ±1% of listed specifications. - Optimized spray pattern for each application - Sold in sets of 2 injectors - Each injector is dynamically flow tested - Exact OEM style fitment - For OEM replacement to high performance applications depending on state of engine tune. Note: Fuel injectors must be able to provide the flow required for the maximum horsepower the engine is capable of producing. Too small injector may cause the engine to run lean, which may cause engine damage. A too large fuel injector will not improve horsepower or torque but may provide issues with idling, running rich, tuning and possible engine or catalytic converter damage.