Standard Ignition FLS-17 Engine Coolant Level Sensor

Engine Coolant Level Sensor for Buick, Oldsmobile, Pontiac

Standard Ignition FLS-17 is an engine coolant level sensor built for direct-fit service on select Buick, Oldsmobile, and Pontiac applications. It uses a 3-terminal blade connection with a female plug-in connector and 12-volt electrical design for straightforward replacement in cooling system level monitoring circuits.

Key Features

• Engine coolant level sensor for cooling system level detection
• Female plug-in connector with 3 male blade terminals
• 12-volt electrical specification
• Built with copper alloy conductors for strong electrical conductivity and low resistive loss
• 100% tested for mechanical switching and electrical switching performance
• Standard Ignition part number FLS-17

Detailed Description

Standard Ignition FLS-17 is engineered for vehicles that rely on accurate coolant level monitoring to trigger the proper warning signal. The robust construction and high-grade materials support dependable operation in demanding service environments, while the copper alloy conductor design helps maintain consistent electrical performance. This sensor is a direct replacement choice for applications including 1996-2005 Buick Park Avenue, 1996-1999 Buick Riviera, 1996-2005 Buick LeSabre, 1996-1999 Oldsmobile 88, 1996-1999 Oldsmobile LSS, 1997-1998 Oldsmobile Regency, and 1996-1999 Pontiac Bonneville. This part cross-references Four Seasons 74805 for the same application.

What It Helps Fix

• Coolant level warning light staying on
• Intermittent or inaccurate low coolant alerts
• Faulty sensor switching in the coolant reservoir circuit
• Electrical connection issues at the coolant level sensor
• Replacement needs on aging Buick LeSabre, Park Avenue, and Pontiac Bonneville cooling systems

Installation Notes and Tips

Verify connector style, terminal count, and voltage before installation. Match the sensor to the vehicle’s coolant level monitoring connector and inspect the harness terminals for corrosion, looseness, or heat damage before connecting the new unit. Confirm the reservoir or sensor mounting area is clean and free of debris so the replacement can seat correctly.

Quality Assurance

Standard Ignition tests each FLS-17 sensor for mechanical and electrical switching performance before release. The design uses durable materials and copper alloy conductors to support stable conductivity and consistent service life in cooling system applications.