[Pros] This heater kit is made of metal and rubber material, which is wearable, durable and scratch-resistant. [Function] Engine block heaters are devices used to warm the engine and fluids before starting a vehicle. In cold temperatures, heaters are useful because they reduce the risk of damage from "cold starts" and idling. When the car is started after using a heater, fluids quickly reach an perfect operating temperature. [replacePart Number] 5003619AB [Fitment] For 1998-2007 Vehicle with the for 5.9L Engine, For & QSB Series 3.9L 4.5L 5.9L 6.7L Material: plastic+metal colour: As shown Package Contents: 1 Set x Engine Block Heater Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.