Delphi HTS129 Engine Oil Pressure Switch

Delphi HTS129 Engine Oil Pressure Switch

The Delphi HTS129 engine oil pressure switch is built for Ford Super Duty and Excursion applications that require accurate oil pressure signal control. With a metal and plastic construction, a black and silver finish, and a 3-terminal blade design, it supports reliable electrical connection in the engine management system.

• Engine oil pressure switch for select Ford truck and SUV applications
• Metal and plastic construction for durable underhood use
• Blade terminal design with 1 female connector and 3 male terminals
• Black and silver housing
• Includes engine oil pressure switch and instruction sheet
• Delphi HTS129 replacement part number for direct application matching

OE-Backed Design

Delphi draws on OE heritage and more than 100 years of original equipment experience, with knowledge from supplying major automakers built into this aftermarket engine oil pressure switch. The HTS129 is a practical choice for maintaining proper oil pressure signal performance on 2003-2005 Ford Excursion, 2003-2005 Ford F-250 Super Duty, 2003-2005 Ford F-350 Super Duty, and 2004-2005 Ford E-350 Super Duty applications. This part cross-references Standard Ignition PS-314 for the same application.

Vehicle Fitment

• Fits 2004-2005 Ford E-350 Super Duty, N/A
• Fits 2003-2005 Ford Excursion, N/A
• Fits 2003-2005 Ford F-250 Super Duty, N/A
• Fits 2003-2005 Ford F-350 Super Duty, N/A

Common Issues This Part Addresses

• Oil pressure warning light staying on or triggering intermittently
• Inaccurate oil pressure signal to the engine monitoring system
• Electrical connection problems at the oil pressure switch
• Failed switch causing inconsistent gauge or warning behavior
• Replacement need during engine electrical diagnosis on Ford Super Duty and Excursion models

Installation Notes and Tips

Verify the connector style, terminal count, and application before installation. The HTS129 uses a blade terminal layout with a female connector and should be matched to the original switch configuration on the vehicle. Confirm the engine oil pressure switch location and inspect the harness connector for corrosion or damage before connecting the new part.

Quality Assurance

Delphi builds aftermarket parts using OE experience and supplier knowledge developed through work with leading automakers. The HTS129 reflects that OE-based approach for Ford E-350 Super Duty, Excursion, F-250 Super Duty, and F-350 Super Duty fitments.