OE Part Number : 389-100 389100 Packing Included: 4 X Spark Plug Port Insert As Picture Shows Fitment For: For use on 4.6L, 5.4L and 6.8 V-10 Ford Triton Two Valve Engines For use on years 1996 to 2003. Part No. 389-100 Replacement Inserts Used With: Cal Van 38900 Set Insert size: m14-1.25.