Stay ahead of low-oil trouble with the Walker Products Engine Oil Pressure Switch 256-1148, an OE-replacement sensor that monitors engine lubrication pressure and signals the driver or ECU when it falls below safe operating levels. It's a direct-fit replacement for a wide range of listed applications, including the 1986-1990 Acura Legend, 1995-2005 Acura NSX, 2017-2020 Audi A4, 2017-2021 Audi Q7, 1981-1986 Chevrolet Chevette, 1975-1982 Chevrolet LUV, 2018-2021 Ford F-150, 1995-1997 Honda Accord and 1995-2001 Honda Prelude — see the Buyer's Guide tab for the full list and engine details.
Monitors oil pressure: activates the dashboard warning or feeds the ECU when pressure drops below safe thresholds.
OE-replacement calibration: matches original specs for pressure activation point, thread pitch, and electrical response.
Built for harsh conditions: made with high-temperature, oil-resistant materials to resist heat, oil exposure, and vibration.
Direct fit: threads into the factory location — typically the engine block or oil filter housing — and connects to existing wiring with no modifications.
If a faulty original switch is the cause of a flickering oil light, false warnings, or no signal under low pressure, this switch replaces it to help restore reliable early-warning function within the lubrication system.
Frequently Asked Questions
What does this oil pressure switch do?
It monitors engine oil pressure and activates a dashboard warning light or feeds a signal to the ECU when pressure falls below safe operating levels, helping alert you to a low-lubrication condition.
Will it fit my vehicle?
It's a direct-fit replacement for the listed applications, spanning select Acura, Audi, Buick, Chevrolet, Ford and Honda models. Check the Buyer's Guide tab to confirm the exact year, make, model and engine.
Where does the switch install?
It threads into the factory location — typically the engine block or oil filter housing — using the original threads and connector, so no modifications to the wiring are required.
What are signs this switch may need replacing?
Common signs include an oil light that flickers, false warnings, or no signal under an actual low-pressure condition. Diagnose the cause first, since these symptoms can have other sources.
Is this an OE-replacement part?
Yes. It's an OE-replacement switch calibrated to match original specifications for the pressure activation point, thread pitch, terminal type, and electrical response.
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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.
