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Automann · Probes & Sensors
577.62500
In stock · ships from Knoxville
This is an aftermarket tachometer speed sensor for certain Mack heavy-duty trucks.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 4 applications
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Some cross-reference listings for Mack 64MT412M show applications for 1967-1987 models with a longer sensor. Verify your existing sensor's connector pin count (2-pin) and overall length (2.5 inches) before ordering, as earlier trucks may use a different design.
Part data verified against 4 catalog sources
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It threads into the transmission or drive component and generates electrical pulses for the speedometer or tachometer gauge. If your gauge is erratic or dead, this sensor is a common fix. It has a 2-pin plug, a short body, and standard 3/4"-16 threads.
Part Number: 577.62500
TACHOMETER SPEED SENSOR///64MT412M
Unit: ea
Dealer: KP Services Crossville
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