8 Fairfax St SE
NAPA Auto Parts Genuine Parts Company
8 Fairfax St SE
Leesburg,  VA  20175
(703) 777-2055
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Mon-Fri:7:30 AM-7:00 PM
Sat:8:00 AM-5:00 PM
Sun:9:00 AM-5:00 PM
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Oil Bath Wheel Hub Seals - Rear/Drive Axle - H/D Truck 37 Series (Rubber) RD336 National

Oil Bath Wheel Hub Seals - Rear/Drive Axle - H/D Truck 37 Series (Rubber) RD336 National

Part #: NTL 370371A
Line: National Oil Bath Seals

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Features & Benefits

Warranty: Standard : Warrantied to be free of defects in workmanship and materials for One (1) year following purchase date. This warranty is not transferable.


Single Spring Loaded Sealing Lip Provides Main Contact Point Reducing Shaft Interferance.

  • Unitized Construction Provides Greater Structural Integrity and Reduces Possible Leak Points.
  • Unique Rubber I.D. and O.D. Seal Includes Patented Sure-Lock I.D. Rib, Preventing Bore and Shaft Leaks and Contamination.
  • Metal O.D. Maintains Position on Hub Bore.
  • Four Contact Points Act as a Barrier for Additional Protection.
  • An Installation Tool (Also Available) is Essential in Correctly Installing Oil Bath Seals.
  • Offers Superior Containment Exclusion, Reduced Friction Build-Up and Longer Life Than Other Wheel Seals in it's Price Range.


Brand National
Series 37 Series (Rubber)
Contents (1) Oil Bath Seal
Inside Diameter 3.937
VMRS Code 065004020
Outside Diameter 5.126 in
Oil Bath Seal Uses Installation Tool # RD336
Width 0.605

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Vehicle Fitment Guide

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