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Truck and Jeep Parts Home » Drivetrain & Differential » Differentials » Detroit Locker GM 8.5 Inch10 Bolt 30 Spline Rear TrueTrac - 913A481

Detroit Locker GM 8.5 Inch10 Bolt 30 Spline Rear TrueTrac - 913A481

Detroit Locker | Part Number: EAT913A481
Part Number: EAT913A481
  • Technical Details

    • For Use With 30 Spline Axles
    • For Use With All Ratios
    • For Use In Rear Applications Only
    • Will Fit 8.6in Axles With Install Kit G/235-2021L or G/235-2022
    • Automatic Torque Biasing
    • Smooth Actuating
    • Clutchless Operation
    • 1998 and earlier with bearing bore of 2.89 inch require bearing LM102949 and LM102911

The Detroit TrueTrac Limited Slip is an all gear driven clutchless differential. The TrueTrac will automatically provide smooth transfer of power from the slipping wheel to the non slipping wheel to help you out of a jam. With no clutches to wear out, you will have a dependable long lasting Limited Slip differential.

Installation instructions are in PDF format. You will need Adobe Reader to view these files.
Download Instructions

Axle LocationAxle TypeAxle TypeFitmentPopular Axle ManufactureDifferential TypeAxle Spline
RearGM 10 Bolt 8.5 InchesGM 10 Bolt 8.6 InchesUniversal FitGMLimited Slip Assembly30 Splines

Customer Reviews

Average Customer Review

pretty impressed


By red

from missouri


Comments about Detroit LockerGM 8.5in.10 Bolt 30 Spline Rear TrueTrac:

I recently replaced my factory g80 hybrid locker with a trutrac. I am really impressed by how smooth and quite it is. Theres never any question if its working right (unlike my factory g80). It does good on and light offroad. I do know that if you get one tire off the ground it wont work until you put light pressure to the brakes. But for a stock or mildly modified truck they work great.

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Questions & Answers

  • Q:

    will this fit a 1972 buick skylark 350 cid/2bbl w/ 300/350 tbh ???
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