8 3/4 Helical Gear Sure-Grip (Sure-Trac II)

DoctorDiff Sure-Trac II is a fully machined, forged steel 8.75" differential which operates similar to an Eaton True-Trac. <br /><br />The Sure-Trac II incorporates 6 helical (worm) gears instead of 4 for maximum strength and smooth, quiet operation. <br /><br />Use conventional 85 W 140, GL-5 grade gear lube. Friction modifier additive is not necessary.

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