Buy 1999 Ford F-150 4.2L Triton V6 A/T RWD XLT Extended Cab Pickup Stepside Oil. Level. Washer. Sensor LITER, Low, Major, Make - OEM Ford Part # E9DZ6C626B (E9DZ-6C626-B, F5RZ-6C626-A, F5RZ6C626A)

Engine Oil Level Sensor Seal. Sealing Washer that fits between Oil Level Sensor and Oil pan.

Engine Oil Level Sensor SealEngine Oil Level Sensor Washer

Fits Freestar, Monterey, Windstar

3.8 LITER.
Engine Oil Level Sensor - Repair or Replace
If your engine oil level sensor has failed, it will usually provide a "false positive," meaning it will incorrectly report that your engine oil is low even if it isn’t. This can lead to some operators adding more oil than is necessary to the engine, which causes damage to major systems. Whether you suspect the oil level sensor or not, a technician should diagnose the fault in your 1999 Ford F-150 to prevent engine damage.