HONDA FEMALE CONNECTOR 3/8 17650-921-003ZB

Function and technical context

This 3/8" female fuel connector is part of the fuel supply circuit on Honda outboard engines, acting as a watertight connection point between the tank hose and the engine. Its function is to guarantee the continuous and hermetic passage of fuel from the tank to the injection or carburetion system, avoiding leaks that could compromise both engine performance and safety on board. A deteriorated connector can cause loss of pressure in the fuel line, intermittent engine cuts or petrol drips that pose a fire risk in the boat. The tightness of this element is critical on any voyage, since a failure in the connection can leave the engine without a fuel supply while sailing.

When to replace this part?

The most common symptoms that indicate that the female fuel connector needs to be replaced are: a persistent smell of petrol in the engine area, difficulty in fitting or disengaging the connection firmly, presence of fuel stains on the coupling or visible loss of fuel during starting. The rubber parts and internal seals of these connectors degrade with prolonged exposure to modern ethanol fuels, UV rays and temperature variations typical of the marine environment, so it is recommended to inspect them during each seasonal maintenance. Replacing this connector preventively at the slightest sign of deterioration avoids breakdowns at sea and the costly nautical assistance services that these situations entail.

Equivalent manufacturer part numbers