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Maintain consistent torque on the highly stressed pinion. This nut is not only made from a higher grade steel, it also has a stiff nut action so it will not slack off over time. Recommended for all diffs whether road or race. (Does not fit Austin Healey BN1).
TECH TIP Use an old nut whilst setting up the pinion pre load, once happy then install the new nut ONCE.
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