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C4 Corvette Speedometer Gear Applications

Please verify part numbers before use

Transmission Gear Ratio Drive Gear Color # of Teeth Driven Gear Color # of Teeth Vehicle Speed Sensor
1984
MD8 with Export (VB4, VD1, VE1, VT7) 3.07 8640517 Red 17 25513047 Black 40 25007308
MD8 except Export (VB4, VD1, VE1, VT7) 3.07 8640517 Red 17 25513049 Green 42 25007308
MK2 3.07 8640517 Red 17 25513047 Black 40 25007308
MD8 & MK2 3.31 8640517 Red 17 25513052 Lt. Blue 45 25007308
1985
MD8 with Export (VB4, VD1, VE1, VT7) 2.73 8640517 Red 17 25513043 White 36 25007224
MD8 except Export (VB4, VD1, VE1, VT7) 2.73 8640517 Red 17 25513044 Red 37 25007224
MH5 & MK2 2.87 8640517 Red 17 25513046 Brown 39 25007224
MD8 & MH5 & MK2 3.07 8640517 Red 17 25513049 Green 42 25007308
1986
MD8 2.59 8640517 Red 17 25513042 Orange 35 25007224
MD8 2.73 8640517 Red 17 25513044 Red 37 25007224
MD8 & MK2 with Export (VB4, VD1, VE1, VT7) 3.07 8640517 Red 17 25513047 Black 40 25007308
MD8 except Export (VB4, VD1, VE1, VT7) 3.07 8640517 Red 17 25513049 Green 42 25007308
MH5 3.07 8640517 Red 17 25513049 Green 42 25007308
1987
MD8 2.59 8640517 Red 17 25513042 Orange 35 25007224
MD8 2.73 8640517 Red 17 25513044 Red 37 25007224
MD8 & MH5 & MK2 3.07 8640517 Red 17 25513049 Green 42 25007308
1988
MD8 with P255/50ZR16 Tires 2.59 8640517 Red 17 25513042 Orange 35 25007224
MD8 with P275/40ZR17 Tires 2.59 8640517 Red 17 25513043 White 36 25007224
MD8 with P255/50ZR16 Tires 2.73 8640517 Red 17 25513044 Red 37 25007224
MD8 with P275/40ZR17 Tires 2.73 8640517 Red 17 25513045 Blue 38 25007224
MD8 & MH5 & MK2 with P255/50ZR16 or P274/40ZR17 Tires 3.07 8640517 Red 17 25513049 Green 42 25007308
1989
MD8 with P255/50ZR16 Tires 2.59 8640517 Red 17 25513042 Orange 35 25007224
MD8 with P275/40ZR17 Tires 2.59 8640517 Red 17 25513043 White 36 25007224
MD8 with P255/50ZR16 Tires 2.73 8640517 Red 17 25513044 Red 37 25007224
MD8 with P275/40ZR17 Tires 2.73 8640517 Red 17 25513045 Blue 38 25007224
MD8 with P255/50ZR16 or P275/40ZR17 Tires 3.07 8640517 Red 17 25513049 Green 42 25007308
ML9 with P275/40ZR17 Tires 3.33 8642620 Grey 15 25513047 Black 40 25007308
ML9 with P255/50ZR16 Tires 3.54 8642620 Grey 15 25513049 Green 42 25007308
ML9 with P275/40ZR17 or P315/35ZR17 Tires 3.54 8642620 Grey 15 25513050 Purple 43 25007308
1990
MD8 with P275/40ZR17 Tires 2.59 8640517 Red 17 25513043 White 36 25007224
MD8 with P275/40ZR17 Tires 2.73 8640517 Red 17 25513045 Blue 38 25007224
MD8 with P255/50ZR16 or P275/40ZR17 Tires 3.07 8640517 Red 17 25513049 Green 42 25007308
ML9 with P275/40ZR17 Tires 3.33 8642620 Grey 15 25513047 Black 40 25007308
ML9 with P275/40ZR17 or P315/35ZR17 Tires 3.45 8642620 Grey 15 25513049 Green 42 25007308
1991
MD8 with P275/40ZR17 Tires 2.59 8640517 Red 17 25513043 White 36 10456092
MD8 with P275/40ZR17 Tires 2.73 8640517 Red 17 25513045 Blue 38 10456092
MD8 with P275/40ZR17 Tires 3.07 8640517 Red 17 25513049 Green 42 10456091
ML9 with P275/40ZR17 or P315/35ZR17 Tires 3.45 12507670 Grey 15 25513049 Green 42 10456089
ML9 with P275/40ZR17 or P315/35ZR17 Tires 3.54 12507670 Grey 15 25513050 Purple 43 10456089
1992
MD8 with P275/40ZR17 Tires 2.59 8640517 Red 17 25513043 White 36 10456091
MD8 with P275/40ZR17 Tires 2.73 8640517 Red 17 25513045 Blue 38 10456091
MD8 with P275/40ZR17 Tires 3.07 8640517 Red 17 25513049 Green 42 10456092
ML9 with P275/40ZR17 or P315/35ZR17 Tires 3.45 12507670 Grey 15 25513049 Green 42 10456089
ML9 with P275/40ZR17 or P315/35ZR17 Tires 3.54 12507670 Grey 15 25513050 Purple 43 10456089
1993
MD8 with P285/40ZR17 Tires 2.59 8640517 Red 17 25513042 Orange 35 10456091
MD8 with P285/40ZR17 Tires 2.73 8640517 Red 17 25513044 Red 37 10456091
MD8 with P275/40ZR17 or P285/40ZR17 Tires 3.07 8640517 Red 17 25513049 Green 42 10456092
ML9 with P275/40ZR17, P285/40ZR17 or P315/35ZR17 Tires 3.45 12507670 Grey 15 25513049 Green 42 10456089
ML9 with P275/40ZR17, P285/40ZR17 or P315/35ZR17 Tires 3.54 12507670 Grey 15 25513050 Purple 43 10456089
1994
M30 Wheel, VSS Reluctor 24202711           8673299
ML9 with P255/45ZR17 or P285/40ZR17 Tires 3.33 12507670 Grey 15 25513049 Green 42 10456089
ML9 with P255/45ZR17, P285/40ZR17 or P315/35ZR17 Tires 3.45 12507670 Grey 15 25513047 Black 40 10456089
1995 & 1996
M30 Wheel, VSS Reluctor 24202711           8673299
ML9 with P255/45ZR17 or P285/40ZR17 Tires 3.45 12507670 Grey 15 25513049 Green 42 10456089


Last Updated on 04/04/00
By Bob Thibodeau