Keep an eye on engine lubrication with the Walker Products Engine Oil Pressure Switch 256-1275, an OE-replacement switch that drops in as a direct-fit replacement for the 2005 Audi A4 Quattro and 2005 Audi A6 Quattro. This switch monitors oil pressure and sends a signal to the ECU or driver when levels fall below safe operating thresholds, activating the dashboard warning light so a low-oil condition doesn't go unnoticed.
OE Replacement Calibration: Matches original specs for pressure activation point, thread pitch, and electrical response.
Built for Harsh Conditions: Made to resist high temperatures, oil exposure, and vibration in demanding engine environments.
Low-Pressure Alert: Activates the dashboard warning or ECU input when oil pressure drops below safe limits, helping alert the driver to a low-oil condition.
Exact OE Fit: Threads directly into the factory location using original threads and connectors—no modifications required.
Common signs the original switch may need replacing include an oil light that flickers, false warnings, or no signal under actual low-pressure conditions. If a failed pressure switch is behind these symptoms, this Walker unit replaces it. See the Buyer's Guide tab for the full engine-level fitment details.
Frequently Asked Questions
What does the Walker 256-1275 oil pressure switch do?
It monitors engine oil pressure and signals the ECU or driver, activating the dashboard warning light when pressure falls below safe operating thresholds.
Which vehicles does this switch fit?
It's a direct-fit replacement for the 2005 Audi A4 Quattro and 2005 Audi A6 Quattro. See the Buyer's Guide tab for full engine-level fitment.
What are signs this switch may need replacing?
Common symptoms include an oil light that flickers, false warnings, or no signal under actual low-pressure conditions. Diagnose the cause before replacing.
Is this an OE-replacement part?
Yes. It's an OE-replacement switch calibrated to match original specs for pressure activation point, thread pitch, and electrical response.
Does installation require modifications?
No. It threads directly into the factory location using the original threads and connectors, connecting to existing wiring with no modifications required.
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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.
