Standard Ignition PS-173 Engine Oil Pressure Switch

Engine Oil Pressure Switch for Nissan Applications

Standard Ignition PS-173 is an engine oil pressure switch with a screw-in connector type, two male blade terminals, and a single male connector. It features a chrome and black finish with a chrome and plastic construction, and it is supplied as the sensor only. This part is used in Nissan oil pressure gauge and light circuits where the original switch has failed or is reading incorrectly.

Key Features

• Engine oil pressure switch for gauge and warning-light applications
• Blade terminal type with 2 terminals and 1 connector
• Male connector and male terminal design
• Screw-in sensor style for direct engine mounting
• Chrome and black finish with chrome, plastic construction
• Standard Ignition PS-173 replacement part

Detailed Description

Standard Ignition PS-173 is built for Nissan engines that use an oil pressure switch to operate a gauge or warning light. It is listed for 1978-1988 Nissan 810, 1980-1986 Nissan 720, 1980-1983 Nissan 200SX, 1979-1983 Nissan 280ZX, 1981-1983 Nissan Maxima, 1981 Nissan 210, 1981 Nissan 310, 1984 Nissan 300ZX, 1985 Nissan 200SX, and 1986-1988 Nissan 200SX, with notes for gauge or light-equipped applications and models without a digital dash where specified. If you are replacing a faulty Nissan 200SX oil pressure switch or servicing a Nissan 280ZX oil pressure gauge circuit, PS-173 provides the correct screw-in sensor format for the listed applications.

This part cross-references AP Exhaust 8043 for the same application.

What It Helps Fix

• Oil pressure warning light stays on or does not illuminate correctly
• Oil pressure gauge reads erratically or not at all
• Intermittent signal from a worn switch connection
• Oil pressure circuit issues caused by a failed sensor
• Replacement needs for Nissan gauge-equipped engines

Installation Notes and Tips

Verify the connector style, terminal count, and engine-side thread style before installation. This PS-173 uses a screw-in sensor design with blade terminals, so the harness connection must match the male terminal layout. Confirm whether the vehicle uses a gauge or light circuit, and check dash configuration notes such as w/o Digital Dash where listed in fitment.

Quality Assurance

Standard Ignition is a recognized aftermarket source for engine management and electrical components. PS-173 is built as a direct replacement sensor for the listed Nissan applications and is intended to restore proper oil pressure signal function when the original switch is no longer operating correctly.