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Engine Crankshaft Main Bearing

John Deere · Part Number: AT21140
$16.51
  • John Deere engine crankshaft main bearing supports smooth rotation and stability for reliable performance in critical engine assemblies.
  • Axial load management in this bearing helps handle forces along the shaft, supporting consistent operation under varying conditions.
  • Controlled component positioning allows this bearing to maintain accurate crankshaft alignment throughout engine cycles.
  • Wear reduction properties help protect adjacent engine parts, contributing to longer service intervals and reduced maintenance needs.
  • Fitment and integration of this bearing support straightforward installation within compatible John Deere engine systems.

Fits John Deere: 240, 250, 260, 270, 335, 435, R40, W50, W70, 2056, 2058, 2254, 2256, 2258, 330B, 344E, 344G, 430B, 482C, 5005, 5103, 5104, 5105, 510D, 5203 and 165 more models. See the full list on the product page.

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Product Dimensions
Weight
0.31 lb
Height
1.20 in
Width
3.40 in
Length
3.40 in
The supporting part often used to reduce friction between a stationary and rotating part. Includes connecting rod and crankshaft bearings that are sometimes referred to as bushings produced from various alloys.