Air Filter: Oil-Free, Pro DRY S 3-Layer Progressive Porosity Synthetic Media for maximum convenience, 100% Polyurethane Construction, Washable and Reusable for Multiple Cleaning Cycles. Fuel Filter: 2 filter set, high flow rates and outstanding filtration, direst stock replacement for easy installation, includes both the chassis mount filter and the engine mount filter. Oil Filter: high flow rates and outstanding filtration, direct stock replacement for easy installation. Diesel Fuel booster: 10 ounce bottle, extreme concentrate, treats 100 gallons, cetane maximizer, lubricates high pressure pump and injectors, long term fuel stability, inhibits corrosion, improves fuel in extreme temperature, alcohol free.