QuasarBeam C20037C Carbon Activated Premium Cabin Air Filter Guard for Cadillac, Chevrolet, GMC Models Carbon Activated Cabin Air Filter absorb up to 99.5 percent of allergens including dust and pollen. Filters most dangerous toxic gases and odors. For Best Performance and Efficiency It is recommended to replace the air filter every 12,000 to 15,000 miles, or per the owners manual. Compatible models : FRAM CF8791/ CF8791A, Purolator PCF5388, Prime Guard PCF5388. OEM : 52485513 Cadillac : Escalade / Escalade EXT - 2002. Chevrolet : Avalanche 1500 / 2500 - (2002), Silverado 1500 - (99-02), 1500HD - (01-02), 2500 - (99-02), 2500HD (01-02), Silverado 3500 (01-02), Suburban 1500 / 2500 (00-02), Tahoe (00-02). GMC : Sierra 1500 (99-02), Sierra 1500HD (01-02), Sierra 2500 (99-02), Sierra 2500HD (01-02), Sierra 3500 (01-02), Sierra C3 - 2001, Yukon (00-02), Yukon XL 1500 / XL 2500 - (00-02) Filter Dimensions : Length : 237 mm Width : 137 mm Height : 23 mm. Easy to install; Instruction Included