Automann 577.75639 PACCAR Coolant Level Sensor

Keep your heavy-duty cooling system operating properly with the Automann 577.75639 Coolant Level Sensor. This sensor monitors engine coolant level and helps alert the vehicle operator when coolant is low, helping protect the engine from overheating and potential damage.

The 577.75639 is designed for PACCAR, Kenworth, and Peterbilt applications and is a direct replacement for several OEM and aftermarket numbers. It features a 1/4" NPT connection and is built for the demanding conditions of heavy-duty truck applications.

Features

• Automann part number: 577.75639
• Engine coolant level sensor
• 1/4" NPT connection
• Designed for PACCAR applications
• Helps monitor coolant level and prevent low-coolant conditions
• Heavy-duty replacement component
• Suitable for Kenworth and Peterbilt applications

Cross-Reference Part Numbers

• PACCAR: S291-203
• PACCAR: S291-203A
• PACCAR: S291203
• PACCAR: S291203A
• Kenworth: S291203
• PAI: 730418
• TruckPro: FX577.75639

Common Applications

Applications may include:

• PACCAR MX-13 engines
• Kenworth T680
• Kenworth T800
• Peterbilt 579
• Other compatible PACCAR/Kenworth/Peterbilt heavy-duty applications

Always verify the part number and connector/fitment before ordering. Application coverage can vary by model year and vehicle configuration.

Product Specifications

• Brand: Automann
• Part Number: 577.75639
• Product Type: Coolant Level Sensor
• Fitting: 1/4" NPT
• Unit of Measure: Each
• Approximate Product Weight: 0.12 lb
• Approximate Product Dimensions: 5" L × 3.5" W × 2" H