Engine Block Heater for International Navistar DT466 & DT570 2004-2006

Reliable Cold-Weather Ignition for International Navistar DT Series Engines

Who Is This For? Designed specifically for International and Navistar fleet owners running the legendary DT-series engines who require immediate, reliable startups during harsh winter months to maintain tight delivery schedules.

The Cold-Crank Struggle: When temperatures drop, the heavy-duty oil inside your Navistar engine thickens like molasses, creating immense parasitic drag. You turn the key, and the starter labors while the batteries drain, all while the internal components suffer from a "dry start" due to poor oil flow. This repeated thermal stress is the leading cause of premature engine wear and costly mid-season downtime.

The Engineering Solution: This 1250W high-output immersion heater is engineered to sit directly in the coolant jacket of the engine block. By maintaining a consistent internal temperature, it ensures the block remains warm and the fluids stay at an optimal viscosity. This allows for nearly instant ignition, reduced smoke on startup, and immediate cabin heat for the driver.

The Comparative Edge: Why This Beats the Competition

• Thermal Recovery Gain: 1250 Watts of heating power provides significantly faster thermal recovery compared to generic 750W or 1000W heaters, ensuring your truck is ready even in sub-zero deep freezes.
• Superior Material Integrity: Built with a high-grade copper heating element for maximum heat transfer, unlike cheaper zinc-plated steel alternatives that are prone to corrosion and premature burnout in heavy-duty coolant environments.
• Precision Threaded Fit: Features a 1-1/4" NPT precision-machined fitment, ensuring a perfect seal into the factory core port. This eliminates the common leaks found with "universal" expansion-plug style heaters.

Technical Specifications & Factory Ratings

Compatibility & OEM Reference

Fits the Following Vehicles:

• 1994-2000 International DT408
• 1994-2000 International DT466
• 1994-2000 International DT466E
• 1994-2000 International 530
• 1994-2000 International 570
• 2004-2006 International DT466
• 2004-2006 International DT570

Interchange Part Numbers:

1250W, 1-1/4 NPT, DT466-HEATER-0406, DT570-HEATER-0406

The Performance Promise

Buy with confidence. This kit is designed to restore reliable starting performance to high-mileage workhorses. Backed by real automotive experts and fast shipping to keep your fleet on the road.