Hub Cap 6-Bolt 5" BCD Side Fill 1-0.94" Depth - 343-4370

Part#: AAA411343-4370

Features and Benefits

  • Aluminum oil hub cap with side fill plug and standard window for 6-bolt trailer axle wheel end applications
  • Bolt circle at 5-0.50" with bolt size at 0.31" for correct fastener engagement on TN-style hub positions
  • Side fill plug for oil level service access without full hub cap removal at the trailer axle wheel end
  • Flange outer diameter at 6-0.25" with inner diameter at 4-0.38" for precise seating on the hub face
  • Standard window with oil fill lines for at-a-glance lubricant level monitoring after installation
  • Inside depth at 1-0.94" for correct bearing clearance within the oil hub cap body at the wheel end

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Warranty

Warranty Up to 3 years warranty

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Bolt Circle Diameter5-0.50 in.
Bolt Size0.31 in.
Fill PlugSide fill plug
Flange Inner Diameter4-0.38 in.
Flange Outer Diameter6-0.25 in.
Inside Depth1-0.94 in.
Number of Bolt Holes6.00
TypeOil Hub Cap
WindowStandard window with oil fill lines

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The Oil Hub Cap fits a 5" pattern with 6-bolt holes, engineered as an oil bath unit for Heavy Duty commercial axle applications. The cap seals the hub bore against contamination and lubricant loss, supporting reliable wheel-end performance. The piece ships ready for immediate installation on any service schedule.
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