Feature: 1. Fitment: Replacement for Suburban 2000‑2013; Replacement for Yukon 2000‑2013. Built to original specifications and standard. 2. Function: AC block off kit allows you to use just the front system without the loss of refrigerant from the rear lines or evaporator. 3. Package Including: Air conditioning block off kit includes blocks, o rings or sealing washers, nut and bolt, to meet your needs. 4. Rugged Construction: Constructed of high strength aluminum alloy, air conditioner block off kit is solid, chemical resistant, rustproof, durable in use. 5. Simple Operation: Precise machining, rear AC block off kit has high reliability and stable performance, easy to install, great replacement. Specification: Item Type: AC Block Off Kit Material: Aluminum Alloy Fitment: Replacement for Suburban 2000-2013 Replacement for Yukon 2000-2013 . Package List: 2 x AC Block1 x Bolt2 x Gasket