Check out this Quality V-Twin Harley Oil pressure sensor switch, this is precision calibrated.
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Harley Replacement Part Number 74438-99
Manufacture: Volt Tech
FITS Harley-Davidson
FLHX 1999-2016
FLHTRU 1999-2016
FLHTC 1999-2016
FLTRX 1999-2016
FLHTK 1999-2016