Features: 1.Fitment: Glow Plug set is replacement for Bobcat Models Skid Steer 643 645 743, replacement for Wheel Loader 1600. 2.OEM Number: Heater glow plugs replace part number is 3974953. Please make sure the OEM number matches the part you are replacing. 3.Durable Construction: Glow plugs are made of metal material and have a sturdy construction, highly resistant to impact and scratching, as well as being resistant to moisture and rust. 4.Professional Production: The glow plug set has undergone extensive quality and safety testing to ensure long service life and strong durability. 5.Exquisite Workmanship: This glow plug set adopts excellent manufacturing process with stable characteristics, which can provide you with a superior using effect. Item Type: Glow Plugs Material: Metal OEM Number: 3974953 The same electric heating plug with fast heating and long lasting high temperature status provides thermal energy to improve starting performance when cooling engines in severe cold periods Application: Replacement for Bobcat Models Skid Steer 643 645 743 Replacement for Wheel Loader 1600 4 x GlowPlugs