Keep tabs on your engine's oil pressure with the Standard Ignition Engine Oil Pressure Switch PS-381. It installs as a direct-fit replacement for the 1990-1991 Chevrolet Blazer and 1990-1991 Chevrolet G10, threading into the oil-pressure port to monitor pressure in the lubrication system and signal the dash gauge or warning lamp.
Interchange: 19190680 · S4049S · SHS1 · 14103169 · Manufacturer part number PS-381 (also PS381).
This part cross-references / interchanges with the following part numbers:
What does this oil pressure switch do?
It senses engine oil pressure and controls the circuit that operates your oil-pressure warning light or gauge, alerting you if pressure falls outside the normal range.
Which vehicles does the PS-381 fit?
It's a direct-fit replacement for the 1990-1991 Chevrolet Blazer and 1990-1991 Chevrolet G10. See the Buyer's Guide tab to confirm your exact vehicle.
What numbers does this part interchange with?
It cross-references 19190680, S4049S, SHS1, and 14103169. The manufacturer part number is PS-381.
What are signs this switch may need replacing?
An oil-pressure warning light that stays on or flickers, an erratic or non-working gauge, or oil seeping around the switch. Diagnose the cause first, as low readings can indicate real low oil pressure.
Is this a direct replacement?
Yes. It's designed as a direct-fit replacement for a worn or failed original oil-pressure switch on the listed applications.
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.
