The John Deere AR81319 is a genuine OEM fuel injection line, specifically designated as "No. 3". This critical component ensures precise fuel delivery to the engine, maintaining optimal performance and efficiency. It is designed for a range of John Deere agricultural machinery, including 4030, 4040, 4230, 4240, 4430, 4440, 4630, 4640, 4840, 8430, 8440, 8630, 8640, and 8850 series tractors, as well as 6466D, 6466T, 6619D, and 6619T engines. With a length of 850.9 mm, width of 25.4 mm, and height of 25.4 mm, and weighing 0.36 kg, this robust line is built to John Deere's exacting standards for durability and reliable operation.