70236777 Tachometer Gauge Fits Allis Chalmers Late D15 I-60 I-600 23677One New Aftermarket Replacement Tachometer Gauge Fits Allis Chalmers D15, I 60, and I 600 This aftermarket replacement tachometer gauge Fits Allis Chalmers late D15 tractors (serial number 6631 and later), as well as the I 60 and I 600 industrial and backhoe loader models. The gauge mounts to the instrument panel via a two post mounting bracket and features a chrome bezel with a black and white background, a double sided needle, and counter clockwise