Buy 2005 Mercury Mariner Engine Oil Pressure Switch. 5.2 LITER. 6.7 LITER. 6.7 LITER, 2020-22. F-150; 5 LITER, Duty, Sensor - OEM Mercury Part # KR3Z9D290B (KR3Z-9D290-B, KR3Z9D290A)

Pressure. Oil.
Engine Oil Pressure Switch. Sending Unit. Engine Switch. Sender Assembly - Pre. Temperature sensor. Included with: Adapter.

Engine Oil Pressure Switch

Fits F-150, F-250 Super Duty, F-350 Super Duty

5.2 LITER. 6.7 LITER. 6.7 LITER, 2020-22. F-150; 5.2L. F250 Super Duty; 6.7L. F250, F350; 6.7L Diesel. F350 Super Duty; 6.7L. F450 Super Duty; 6.7L. F450, F550; 6.7L Diesel. F550 Super Duty; 6.7L.
Engine Oil Pressure Sensor/Switch - Repair or Replace
The oil pressure switch or oil pressure sensor in your 2005 Mercury Mariner communicates with your engine’s computer to turn on the oil light if the oil pressure is low. In some cases, they can fail as a result of an oil leak and must be replaced to prevent catastrophic engine damage.