912A557 - Detroit Truetrac Differentials


 912A557 - Detroit Truetrac Differentials
 912A557 - Detroit Truetrac Differentials
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Detroit Truetrac was the first helical gear differential ever introduced into the automotive aftermarket. It remains the leading helical gear-type limited slip differential in the industry. The Detroit Locker Truetrac has proven helical gear design which eliminates the need for wearable parts, resulting in maintenance free traction. It is recognized for its durability and smooth and quiet operation.

Power transfer is so smooth; it literally goes unnoticed by the driver. Engineered to work efficiently in front and rear axles. No maintenance - Just Traction!

Detroit Locker #357-912A557


1977-88 GM Car/Truck Truetrac Differential
  • 28-Spline Axles
  • 8.5'' Diameter Ring Gear
  • Fits 2.73 & Up Gear Ratios
  • Front Only


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  • $409.99
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    in 3 days

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