
Feuling Parts Ventilated Drain Plug (ref. 3094)
Replace the original plug with this ventilated plug/indicator designed to relieve pressure from the crankcase and precisely control the oil level. Machined and robust, it incorporates a PCV-type breather with an oil separator, perforated disc, replaceable filter element, and a non-return valve to limit oil return in the circuit.
Important for maintenance: the oil suction port is located on the right side of the engine and the gauge may become hot — use a glove when checking. According to Feuling, tests show a reduction in blow-by pressure in the tank and a more stable oil level when hot (manufacturer's recommendation: 90–99% when hot). Suitable for Harley-Davidson Dyna 1450 models (FXDXI, FXDWGI, FXDLI) and other compatible vintage/classic machines.