Part Number: 10-162820-3 (Tachometer ind,dual electronic) Part Number: 10162822 (Hardware) Part Number: 10162826 (Pad) Part Number: 10162829 (Ne) Part Number: 10-162830-2 (Indicator synchrosc) Part Number: 10162832 (Ne) Part Number: 10162836 (Bushing) Part Number: 10162838 (Spring) Part Number: 10-162840-1 (Tachometer ind,dual electronic) Part Number: 10-162840-1A (Tach ind,dual electric cessna 33) Part Number: 10-162840-2 (Tachometer ind,dual electronic) Part Number: 10-162840-2A (Electronic tachometer) Part Number: 10-162840-3 (Tachometer ind,dual electronic) Part Number: 10-162840-4 (Tachometer ind,dual electronic)