Upgrade your cold-weather starting performance with this Genuine International/Navistar C-Series Engine Block Heater, Part #ZBL8601860, featuring a powerful 1000W / 120V AC heating element and 58 mm (2-9/32″) freeze-plug style design. Marked PAT 4851640, Series C, this heavy-duty heater is designed to warm the engine before starting, helping improve cold-weather starts and reduce the strain associated with starting a cold diesel engine. The heater comes with the cord and components shown and is ideal for International/Navistar C-Series and compatible 8.3L applications. The packaging and markings indicate Made in USA, making this an excellent OEM/NOS replacement or spare for heavy-duty trucks, commercial vehicles, and equipment. Please carefully compare part number ZBL8601860, heater markings, dimensions, voltage, and your existing application before purchasing to ensure proper fitment.
Specifications:
- Brand: International / Navistar
- Part Number: ZBL8601860
- Alternate Part Numbers: 8601860, 860-1860
- Heater Marking: PAT 4851640
- Series: C-Series
- Power Rating: 1000W
- Voltage: 120V AC
- Frequency: 60 Hz
- Installation: Freeze Plug
- Opening Size: Approx. 58 mm
Application:
- International / Navistar C-Series engines
- International 8.3L diesel applications
- Suitable for heavy-duty trucks and commercial equipment, where the ZBL8601860 specification is required
- Designed to pre-warm engine coolant/block for easier cold-weather starting
- Helps reduce cold-start strain and improves engine starting performance in low temperatures
- Verify engine model, existing heater dimensions, voltage, and part number before purchase
- Do not rely solely on engine displacement or vehicle year for fitment
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