Springfield Marine | KingPin | 3"X 4" Stainless Steel Mill Base Without Bushing (3630007-NB)

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SPRINGFIELD KingPin™ Stainless Steel 3" x 4" Base without Bushing

Manufacturer Note:

This base is offered with a custom support collar made exclusively for Tracker Marine. The installation area they use provides extra support to the base cup in both directions.
If used in another application, similar support must be present in the way of plywood or fiberglass walls supporting the cup sides or a metal plate supporting the bottom of the cup.
Please do not purchase this base unless you are an experienced boat builder or restorer.


  • Plate Size: 3" X 4" 
  • Mount Pattern: 4-bolt pattern with holes spaced 2" (measured center-to-center) on the short sides and 3" on the long sides.
  • Finish: Stainless Steel Mill Finish
  • Socket Size: 0.75"
  • Requires 2.5" diameter hole in the deck
  • Extends 3" below deck
  • Mounting hardware is not included

Extra Information

Springfield Marine
Brand Series:

Warranty Information

5 Year limited Manufacturer Warranty. Please contact Springfield directly for warranty details