OTC 1977 Truck Pinion Locknut Socket

SKU: OTC1977
UPC: 731413008139
Shipping: Calculated at Checkout

OTC 1977 2¼" Pinion Locknut Sockets

We've designed and built these sockets to have the correct clearance for yoke and locknut assemblies on a variety of truck transmissions and differentials.  The sockets have 3" of usable depth and are 4" long.  Using the right tools saves time and effort, eliminating the need to destroy standard sockets by grinding them down to fit tight pinion clearances.


  • Socket has a 3" usable depth
  • 4" overall length
  • Eliminates modifying standard socket to provide necessary clearance
  • Opening size of 2¼", ¾" drive, 6 point socket
  • Designed for use with ¾" square drive manual tools only
  • Resists rounding out
  • Made of high-strength steel

Note: Use sockets with ¾" square-drive, manually powered handles only.  Warranty void if tool is subjected to impact wrench use.

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OTC Warranty