Heater Plug — 12V Screw Type, 7/8 in UNF Thread SKU: QT2666103

This heater plug preheats the intake for cleaner, quicker diesel starts, especially in cold weather. It replaces a worn element so your engine lights off predictably and gets to work sooner.

The screw-type body installs directly into the intake housing and seals securely at the thread, while the robust element is built for repeatable heat cycles in dusty, high-vibration farm conditions.

• Voltage: 12 volts for intake preheat on diesel engines
• Mounting thread: 7/8 in (20.8 mm) UNF screw type
• Built for reliable cold-start assistance and consistent ignition performance
• Service-friendly design for straightforward replacement during maintenance

Installation Tip: Disconnect battery power. Remove the old unit, clean the seat, and install the new plug snugly; verify the feed and electrical connections, then preheat per your machine’s procedure and check for leaks.

A practical, dependable intake preheat solution that helps your diesel start cleaner and faster in tough conditions.