Keep tabs on your engine's oil pressure with the Standard Ignition Engine Oil Pressure Switch PS-427. It installs as a direct-fit replacement across a broad range of Ford, Lincoln and Mercury vehicles — including the 1998-2019 Ford Explorer, 2000-2017 Ford F-150, 2003-2018 Ford Expedition, 2010-2019 Ford Fusion and 2015-2023 Ford Transit-150. See the Buyer's Guide tab for the full list of 77 applications.
An oil pressure switch senses engine oil pressure and sends the corresponding signal to the dashboard warning light or gauge circuit, alerting the driver when pressure falls outside the normal range. If a faulty switch is the cause of a flickering oil light, an erratic reading, or a light that stays on while oil pressure is healthy, this switch replaces it.
Interchange: S4327 · PS832 · OP6889 · 1U5T9278DA · 1U5Z9278DA · 6U5Z9278D · F8AZ9278DA · GC3Z9278A · GC3Z9278B · SW5270 · SW5696 · SW6357 · SW7676 · OP6889SB · 80037 · PS427T · PS407VC
Manufacturer part number PS-427 (also PS427).
This part cross-references / interchanges with the following part numbers:
What does the PS-427 oil pressure switch do?
It senses engine oil pressure and sends a signal to the dashboard oil warning light or gauge, alerting you when pressure falls outside the normal range.
Will this switch fit my vehicle?
It's a direct-fit replacement for 77 Ford, Lincoln and Mercury applications, such as the 1998-2019 Ford Explorer and 2000-2017 Ford F-150. Check the Buyer's Guide tab to confirm your exact year and model.
What are signs my oil pressure switch may be failing?
A flickering or constantly-lit oil warning light, an erratic gauge reading, or a light that stays on despite healthy oil pressure can be signs the switch needs replacing.
My oil light is on — will this fix it?
Diagnose the cause first. If a failed pressure switch is the source of the warning, this replaces it, but a lit oil light can also indicate low oil pressure or other issues that need attention.
What numbers does the PS-427 interchange with?
It cross-references S4327, PS832, OP6889, SW5270, SW5696, SW6357, SW7676, 80037 and more — see the full interchange list in the description.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
