Features: Crafted from high quality materials, this plug offer durability and corrosion resistance. Whether you're a truck enthusiast or an automotive technician, this plug is perfect for repair and replacement needs. Enhances your vehicle's starting system with the glow plug and enjoy dependable engine performances. The glow plug relays is convenient to install, completely matching the original car, and can be replaced directly. Made of premiums metal material, the product is durable and sturdy. Specifications: Material:Metal Size:Approx.6.60x8.4cm/2.6x3.3inch Color:Black For 7.3L F-250 F-350 F-450 F-590 F-600 Part Number:F81Z-12B533AC F4TZ-12A342-BA K-12B533-A F7TZ-12B533-CA3 Interchangeable part number:DY838, DY861, 1825908C1, 1825931C1, 1825931C2, 1831646C1, F4TZ12B533A F5TZ12B533A, F6TZ12B533A, F7TZ12B533AA, F7TZ12B533AB, F7TZ12B533C, F81Z12B533AA, F81Z12B533AC F4TZ-12B533-A, F5TZ-12B533-A, F6TZ-12B533-A, F7TZ-12B533-AB, F7TZ-12B533-C F4TZ-12A342-A, F4TZ12A342BA,DRX00138,ZD11111137G,80033190,GP107 Package Includes: 1x Relays 8x Glow Plug note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.