***Please check and make sure that your fittings are the female end and that our male blocks are what you need. There are a small number of vehicles that have the blocks reversed and you will need BK85075F.*** Our Rear A/C Block Off Kit allows you to eliminate the rear A/C System and continue to use the front A/C. These are factory direct replacement fittings and fit just like the old lines. ***Will not fit vehicles equipped with female block fitting to rear unit. ***Be aware of cheap knock offs on Amazon. Please be aware that their product is not the same as ours. It is not the same quality, not the same part# and does not carry the same lifetime **as our product. Please make sure you purchase the product from Auto Cooling Solutions. We make our AC block kits from premium aerospace grade aluminum and were the only ones with a lifetime warranty! 1998-2005 Fits: Navigator, Excursion, Expedition