Buy 2003 Lexus GS 430 Engine Oil Level Sensor Seal. Engine Oil Level Sensor - Repair or Replace If Adding, Causes, False - OEM Lexus Part # 9043027001 (90430-27001)

GASKET, ENGINE OIL LEVEL SENSOR

Fits ES 300, ES 330, ES 350, GS 300, GS 400, GS 430, IS 300, LS 430, SC 430

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 2003 Lexus GS 430 to prevent engine damage.