The kit allows for front A/C to remain fully functional while eliminating the rear system without the loss of refrigerant from the rear lines or evaporator. No need to replace expensively the rear A/C lines or evaporator. Lead to a quality cold air especially in the mini vans. Easy to install by any proficient technician. Fits 2007-15 GMC Acadia & Chevrolet Traverse with the block (peanut style) fittings using sealing washers & dual bolts/nuts. The fittings installed in the front wheel well areas of the vehicle where the rear lines attached to the front lines. Complete with O-rings or sealing washers, bolts and nuts.