Function: 1. Fitment: Replacement for TRAILBLAZER 2002-2009; Replacement for ENVOY 2002-2009; Replacement for Rainer 2002-2009; Replacement for Isuzu Ascender 2002-2009. 2. Function: The AC blocking kit allows the air conditioning to operate from the front without losing refrigerant from the rear piping or evaporator. 3. Sturdy Construction: The rear AC locking kit is made of high-strength aluminum alloy, which is rust-proof, sturdy and not easy to break. 4. Package Including: Complete AC Blockout Kit Including 2pcs Blocks, o-rings or sealing washers, nuts and bolts to meet your needs. 5. Practical AC Repair Kit: This kit saves you from the costly replacement of rear A/C or evaporator hoses. Specification: Item Type: Rear AC Lock Kit Material: aluminum alloy Installation: Replacement for TRAILBLAZER 2002-2009 Replacement for ENVOY 2002-2009 Replacement for Rainer 2002-2009 Replacement for Isuzu Ascender 2002-2009 Package List: 2 x AC Block1 x Screw 2 x Gasket