Feuling Parts 07100260 Oil gaugeRef : FELG00089A / 07100260

Brand: FEULING PARTS — Manufacturer's ref: 3088
Designation: Not communicated

Ventilated gauge dedicated to touring engines: it replaces the original cap/gauge by screwing into the oil fill opening and incorporates a PCV type breather with an oil separator. Designed to vent the crankcase overpressure (blow-by) to the outside while limiting oil transport thanks to a perforated disc and a replaceable filter. Made in the United States, it is aimed at riders seeking precise control of oil level and clean management of oil vapours on large V-Twins.

• Level reading: two possible methods — FHS (motorcycle on side stand) or FHU (motorcycle upright and level).
• Two ventilation options: 1/8 NPT fitting with internal filter or quick connector with rubber hose + filter.
• Oil separator and replaceable filter to limit oil discharge into the breather.
• Direct replacement of the original part on the oil fill opening.
• Feuling advice: recommended hot oil level 90–99%; avoid reaching the rev limiter and, on M8 engines, prefer conventional oil to preserve the sealing of the rings.

Safety note: the gauge becomes hot, use a glove for handling. Tests indicate better management of blow-by and a smoother engine behaviour in certain configurations, but results may vary depending on the engine condition and maintenance.