4x Heater / Glow Plugs Original design as shown in photo For International Harvester Engines BD154 BD144 Used in International Harvester Tractors: 250, 275, 276, 354, 374, 384, 414, 424, 434, 444 Please note these plugs do not earth through the large thread like a conventional plug and should not be tested thread to thread If you do want to test these plugs before fitting then please ask for guidance.
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