Keep an eye on engine lubrication with the Walker Products Engine Oil Pressure Switch 256-1022, an OE-replacement switch that monitors oil pressure and signals the ECU or dashboard warning light when levels fall below safe operating thresholds. It threads directly into the factory location using the original threads and connector, dropping in as a direct-fit replacement for the 2003-2009 Nissan 350Z, 2004-2006 Infiniti QX56, 2004-2006 Nissan Titan, 2005-2006 Nissan Altima, 2005-2006 Nissan Armada, 2005-2006 Nissan Pathfinder, 2004 Nissan Pathfinder Armada, 2005-2008 Nissan Frontier, 2005-2009 Nissan Xterra, 2007-2012 Nissan Sentra, and 2009-2021 Nissan GT-R — see the "Vehicles it fits" section for the full list and engine details.
- OE Replacement Calibration: Matched to original specs for pressure activation point, thread pitch, and electrical response.
- Monitors Oil Pressure Levels: Activates the dashboard warning or ECU input when oil pressure drops below safe operating thresholds.
- Built for Harsh Conditions: Made to resist high temperatures, oil exposure, and vibration in demanding engine environments.
- Exact OE Fit: Installs in the factory location using the original threads and connectors, with no modifications required.
If a failed oil pressure switch is behind a flickering oil light, false warnings, or a missing signal under low-pressure conditions, this Walker unit replaces it and restores the lubrication system's early-warning function.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
What does this oil pressure switch do?
It monitors engine oil pressure and activates the dashboard warning light or sends a signal to the ECU when pressure falls below safe operating thresholds, helping alert you to low-oil conditions.
Will it fit my vehicle?
It's a direct-fit replacement for applications like the 2003-2009 Nissan 350Z, 2004-2006 Infiniti QX56, and 2009-2021 Nissan GT-R. Check the "Vehicles it fits" section to confirm your year, make, model, and engine.
Are any modifications needed to install it?
No. It threads into the factory location using the original threads and connects to the existing wiring with no modifications required.
What are signs this switch may need replacing?
Common signs of a failed switch include a flickering oil light, false warnings, or no signal under actual low-pressure conditions. Diagnose the cause before replacing.
Is this an OEM part?
It's an OE-replacement switch calibrated to match original specs for pressure activation point, thread pitch, and electrical response for the listed applications.
