Standard Ignition PS-478 Engine Oil Pressure Switch

Engine Oil Pressure Switch for Volvo S40 and V40

Standard Ignition PS-478 is an engine oil pressure switch built for direct fitment on select 2000-2004 Volvo S40 and 2000-2004 Volvo V40 applications. It uses a pin terminal design with a female connector and male terminal interface for the specified harness connection.

Key Features

• Engine oil pressure switch for Volvo S40 and Volvo V40 applications
• Pin terminal type with 1 terminal
• Female connector gender and male terminal gender
• Direct replacement part number PS-478
• Cross-reference: OP6941 and PS427 for the same application

Detailed Description

This Standard Ignition PS-478 engine oil pressure switch is specified for 2000-2004 Volvo S40 and 2000-2004 Volvo V40 models, including the noted harness/light application on the S40 listing. As an engine oil pressure switch, it monitors oil pressure status and sends the signal needed by the vehicle’s warning system. The pin-style electrical connection and single-terminal layout support a straightforward replacement when the original switch matches the listed connector configuration.

For buyers searching for a Volvo S40 oil pressure switch, Volvo V40 oil pressure switch, or Standard Ignition PS-478 replacement, this part matches the listed fitment and connector details. It is also referenced under PS-478 for catalog lookup and interchange verification.

What It Helps Address

• Oil pressure warning light staying on or coming on intermittently
• Inaccurate oil pressure signal to the dash warning system
• Electrical connection issues at the original switch
• Replacement needs for a worn or failed engine oil pressure switch

Installation Notes and Tips

Verify the connector style, terminal count, and harness configuration before installation. Match the vehicle application exactly to the listed 2000-2004 Volvo S40 and 2000-2004 Volvo V40 fitment, and confirm the switch location on the engine before removal. Inspect the connector for corrosion or damaged terminals so the new switch seats and communicates properly.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for electrical and engine management components. PS-478 is cataloged with direct interchange references to support fitment verification against the original application.