These 13 Inch Kenworth Style Air Cleaner Brackets are made of durable stainless steel and are designed to fit most Kenworth models. Sold as a pair, these brackets are specifically designed for 13 inch air cleaners. They provide a practical and secure solution for mounting your air cleaner, ensuring it stays in place during your travels. Please note that the air cleaner itself (X43050) is sold separately. Upgrade your Kenworth with these reliable and functional air cleaner brackets.