
National

Select your vehicle to check fitment.
This Taper Bearing Cone fits vehicles.
This part replaces and is compatible with the following part numbers
National 399A Bearings for Spicer (M/T)
Manufactured with premium-grade steel, National® taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
Shop National Bearings at Autrex with vehicle fitment details, current pricing, and checkout options for the National 399A. Eligible orders over $99 may qualify for free shipping, with some exceptions.
Based on 47 reviews
Lined up perfectly with the original. Install took about an hour with the right press. Solid feel back in the steering, no more clunk over bumps.
Installed on 2016 Ram 1500
Ordered on a Monday, had it by Wednesday in Calgary. Greasable fitting is a nice touch. Quality looks on par with OEM.
Installed on 2014 Chevrolet Silverado 1500
Works great so far. Just confirm fitment for your exact trim before ordering — the fitment list on the page was accurate for mine.
Installed on 2017 Ford F-150
Replaced both sides at the same time. The knocking noise is completely gone. Boot quality feels durable.
Installed on 2015 GMC Sierra 1500
Second one I've bought from Autrex. Packaging was secure and the part matched the photos exactly.
Installed on 2013 Dodge Durango
The National 399A is a direct replacement for Allis Chalmers RB5658, Allis Chalmers 06068977, Allis Chalmers 1122265, Allis Chalmers 0606897, Allis Chalmers 02349561 and 69 other part numbers. See the full interchange list for all compatible replacements.
Shipping options for the National 399A are shown during checkout and may vary by item, address, and availability. Eligible orders over $99 may qualify for free shipping, with some exceptions. Call 1-866-461-2787 if you need help confirming shipping or pickup before ordering.
The National 399A is currently listed at $81.39 CAD at Autrex. Final price, shipping, taxes, and availability are confirmed during checkout. Call 1-866-461-2787 if you need help before ordering.
Yes, the Taper Bearing Cone by National is designed as a direct fit replacement. Use our vehicle selector to confirm compatibility with your specific vehicle.
The Taper Bearing Cone comes with the standard National manufacturer warranty. Please check the product specifications for exact warranty terms.