Custom made cables to exact specifications. Over-length cables can cause problems - order one that fits the installation. Select the proper length from the listing below, but measure old tach cable to verify length in chart is correct for your aircraft, as tach cables can vary from aircraft to aircraft. Measure original cable from end of Ferrule to end of Ferrule when fully extended. Left lay is standard on all stock tach cables. Tach cables have male ends only . 7/8-18 on one end and 5/8 on the other. No female ends. When ordering special length tach cables specify aircraft, engine, make, model & dash number.

Note: General rule for installation: Tach cable should be installed as straight as possible - the inner cable length will decrease 11/16" per 360 degrees of bends.

To determine cable rotation, note the rotation direction of the tach drive socket on the engine while looking at the engine. If the drive socket rotates clockwise, a right lay inner cable is required. If the drive socket rotates counter-clockwise, a left lay inner cable is required. The rotation direction of the tach needle does not affect which lay should be used.

Download PDF of 15510 Tach Cable Envelope Drawing