Springfield Marine | 4" Series | Mariner II | Locking Slide & Swivel Seat Mount | Anodized (3100565-LA)

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Springfield Marine Mariner II with Locking Slide & Swivel Functions

Springfield Marine designed their 4" Series to withstand the toughest boating conditions.
Perfect for highly corrosive environments, this Mariner II Heavy Duty Locking Slide & Swivel Seat mount is made with high quality materials for ultimate longevity. 
Easily activate the slide and swivel functions, which lock into place to meet the highest ABYC safety standards. 


  • Swivel provides 360-degree rotation 
  • Anodized finish resists corrosion, even in saltwater applications
  • Slide provides 6" range of fore and aft travel for positioning that meets your needs


  • Aluminum formed side plate measurements: 10-1/2" x 14-1/2"
  • 1/4" thick aluminum swivel plate
  • Seat mount clamps onto 4" diameter posts and locks into place with a stainless steel pin
  • 1/2" HDPE internal bearing promises smooth swivel rotation and operation
  • Travel range: 6" fore and aft
  • Adds 3-7/8" to overall height of the pedestal
  • Mounting Pattern:  5" X 12"  (no  mounting hardware included)
  • Mounting holes are bigger and require a 5/16" bolt (if using a smaller bolt, you may need to use a washer)
  • Compatible with Springfield Marine 4" Series Fixed Height Pedestals
  • ABYC Rating: Class AD (safe for use in driver position)

Available Finishes

Please note that this item may take 10 to 15 business days to ship directly from the manufacturer

Extra Information

Springfield Marine