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NATIONAL 1729X Specifications
Cup Bore (Inch)2.2400
Cup Bore (MM)56.8960
Cup Length (Inch)0.6250
Cup Length (MM)15.8750
Cup Radius (Inch)0.0620
Cup Radius (MM)1.5750
Part DescriptionTaper Bearing Cup
Race Only
National® Oil Seals & Bearings has built a reputation as one of the most respected names in the industry. They have offered premium sealing and wheel end solutions for more than 75 years. Their design and engineering teams keep pace with the industry and provide advanced solutions for today's vehicles.

Features & Benefits:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
OEM / Interchange Numbers: 11690248, 120264, 12064, 120655, 135498, 14054922, 149545, 150069, 15532, 164082, 18484, 196806, 19993, 25945H, 310772, 3112674, 3BD18, 3BD19, 3DD6, 4021585460, 41108, 457314, 50337, 5086, 51695, 622263, 64AX40, 698401, 706732, 71027, 7710304, 7715304, 88039, 92507, 9412695, A29770X, AA1217B, BB1217, JD7401, T29527, TD5086, X620405, XT10G

NATIONAL Warranty Information:
12 Months