The John Deere RE561023 is a genuine OEM DEF (Diesel Exhaust Fluid) pressure line designed for use in various John Deere agricultural and utility machines. This critical component ensures the correct delivery and pressure of DEF within the exhaust system, which is essential for meeting emissions standards and maintaining engine efficiency. Constructed from durable materials, this pressure line offers reliable performance and a precise fit for compatible John Deere models, including 6R, 7R, and 8R series tractors, as well as 9R series tractors and 9000 series combines. Replacing with an authentic John Deere part guarantees compatibility and maintains the integrity of the DEF system.