Item Type:SparkPlugPortInsertMaterial: Steel AlloyOE: 389-100, 389100Fitment:Replacement for Ford 4. 6L, 5. 4L and 6. 8 V-10 Triton Two Valve EnginesFor Use On Years 1996 to 2003Used with for cal van 38900 set .wang-edit-text{ font-family:Arial important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1Fitment: Spark plug port insert is replacement for Ford 4. 6L, 5. 4L and 6. 8 V10 Triton Two Valve Engines. For Use On Years 1996 to 2003. 2OE Number: 389-100, 389100 are the reference part numbers. Please double check the part number of your item to ensure perfect fit. 3Efficient Tool: Insert tool set helps you repair other insert failures without adverse effects on heat transfer, improve your work efficiency. 4Durable Material: Made of high strength steel alloy material, replacement spark plug port inserts is wear resistan, not easy to rust and deform. 5Strong Reliability: Professional manufacturing, spark plug port insert has high performance, strong reliability, making sure safety use.