This Ford Tachometer (Proofmeter) Gauge is the perfect replacement part for your tractor, with OEM Part Number C3NN17360N. Compatible with a wide range of Ford tractor models including NAA, 501, 541, 600, 601, 620, 621, 630, 631, 640, 641, 700, 701, 740, 741, 800, 801, 820, 821, 840, 841, 900, 901, 941, 2000, 2031, 2110, 2111, 2120, 2130, 2131, 4000, 4030, 4031, 4110, 4120, 4121, 4130, 4131, and 4140. This gauge is designed to provide accurate readings and durable performance, ensuring that your tractor operates at its best. Whether you use your tractor for farming or construction, this Tachometer Gauge is a reliable and essential component for your Ford equipment. Upgrade your tractor with this high-quality gauge and keep it running smoothly for years to come.