Standard Ignition OPS401 Engine Oil Pump Solenoid

Engine Oil Pump Solenoid for OE-Style Control

Standard Ignition OPS401 is an engine oil pump solenoid built for direct, snap-fit attachment and OE-style electrical connection. It uses a female plug connector with two blade terminals and a black, bronze, metal-and-plastic finish for service replacement applications.

Compatible With 2019-2021 Chevrolet Silverado 1500, 2019-2021 GMC Sierra 1500, 2020 Cadillac CT4, 2020 Cadillac CT5, 2020-2021 Buick Encore GX, and 2021 Chevrolet Trailblazer. Standard Ignition OPS401 is also referenced by OE and aftermarket part numbers for the same application.

Key Features

• Direct, snap-fit attachment method for straightforward replacement
• Female plug connector with female + male blade terminals
• Two-terminal design for controlled electrical connection
• Metal and plastic construction with black and bronze finish
• No wiring included; uses existing vehicle harness connection
• Standard Ignition OPS401 cross-references OE and aftermarket numbers for application matching

Detailed Description

Standard Ignition OPS401 is an engine oil pump solenoid used in vehicles that rely on electronic oil pump control. The direct, snap-fit design and plug-style connector support a clean replacement of the original solenoid assembly, while the blade-terminal layout helps maintain the factory electrical interface. This part number is listed for 2019-2021 Chevrolet Silverado 1500 and GMC Sierra 1500, plus 2020 Cadillac CT4, 2020 Cadillac CT5, 2020-2021 Buick Encore GX, and 2021 Chevrolet Trailblazer applications.

This part cross-references OE and aftermarket numbers such as 12665657 and EPS101 for the same application.

Common Issues This Part May Address

• Oil pump solenoid electrical fault codes
• Intermittent oil pressure control concerns
• Improper oil pump actuation from a worn solenoid
• Connector or terminal wear at the original unit
• Replacement needs during engine oil pump service

Installation Notes and Tips

Verify connector style, terminal layout, and vehicle application before installation. Inspect the harness plug, terminals, and surrounding oil pump components for damage or contamination before connecting the replacement solenoid. Because wiring and hardware are not included, reuse the existing vehicle connection and mounting components where applicable.

Quality Assurance

Standard Ignition is a recognized aftermarket source for electrical and engine management components. OPS401 is built to match the listed OE-style fitment and connection requirements for the specified Chevrolet, GMC, Cadillac, and Buick applications.