Product Feature: 【Great Compatibility】: Specifically designed for GM some vehicle models with 3/4″ heater lines, such as: for Cadillac Deville / Escalade (1999-2014), for Chevrolet Silverado / Tahoe / Suburban / Avalanche (1999-2014), for GMC Sierra / Yukon (1999-2013), Ford F-150 F-250, Buick Rainier, and more. Please check your vehicle model/year below the description before purchase. 【Upgrade Superior Material】: Made of high quality aluminum alloy and stainless steel. High hardness and strength, resists heat, vibration and corrosion for reliable, long-lasting service. Engineered to keep your HVAC and cooling systems running smoothly in all conditions. .