Springfield 1680203 Locking Spring-Lock Seat Mount Swivel, 6-5/8 Inch Square, Black Powder Coat

The Springfield 1680203 is a locking Spring-Lock seat mount swivel designed to attach a boat seat to any locking Spring-Lock or Clip-Lock post that does not have an expansion collar (expansion collar sold separately). It is the top mounting plate that locks onto the post, letting the seat swivel and lock in position while boating. The swivel measures 6-5/8 inches square and adds 1/4 inch to the overall height of the post once installed.

Construction is a marine-grade alloy finished in a black powder coat for rust resistance and long-term durability in wet, salt-air marine environments. The part carries an ABYC A rating and is retail packed in a clamshell with a 4-color label, so it arrives ready to install without additional hardware sourcing. It is a universal fit item, compatible with any locking Spring-Lock or Clip-Lock post system that lacks an expansion collar, making it a straightforward upgrade or replacement swivel for existing Springfield seating setups.

Specifications

• Brand: Springfield
• Manufacturer Part Number: 1680203
• Product Type: Locking Spring-Lock Seat Mount Swivel
• Size: 6-5/8 inch square
• Finish: Black powder coat
• Material: Marine-grade alloy
• Weight: 1.6 pounds
• Height Added to Post: 1/4 inch
• ABYC Rating: A
• Pack Quantity: 1 (retail)
• Fit Type: Universal fit
• Compatible With: Locking Spring-Lock or Clip-Lock post without expansion collar
• UPC: 038132451049

Fitment

Fits any locking Spring-Lock or Clip-Lock boat seat post that does not have an expansion collar (expansion collar sold separately).

Frequently Asked Questions

What is the Springfield 1680203 used for? It is the locking seat mount swivel that attaches on top of a boat seat post, letting the seat lock into position and swivel freely while underway.

Will the 1680203 fit any boat seat post? It fits any locking Spring-Lock or Clip-Lock post that does not have an expansion collar; if your post uses an expansion collar, that component is sold separately and is not included.

What size is this seat mount swivel? The Springfield 1680203 measures 6-5/8 inches square.

How much height does the 1680203 add to my seat post? Installing the 1680203 adds 1/4 inch to the overall height of the seat post.

What material and finish does the 1680203 have? It is made of marine-grade alloy with a black powder coat finish for rust resistance in marine environments.

How much does the Springfield 1680203 weigh? The 1680203 weighs 1.6 pounds.

Is the 1680203 an OEM Springfield part? Yes, 1680203 is the genuine Springfield part number for this locking Spring-Lock seat mount swivel, not a generic aftermarket copy.

Does the 1680203 come with mounting hardware? The 1680203 is retail packed in a clamshell as the seat mount swivel itself; it does not include an expansion collar, which is sold separately if your post requires one.

Is the Springfield 1680203 rated for marine use? It carries an ABYC A rating and its black powder coat finish is built for rust resistance in wet, salt-air boating conditions.

Can the 1680203 be used to replace a worn seat swivel? Yes, it is designed as a direct replacement or upgrade swivel for any compatible locking Spring-Lock or Clip-Lock post without an expansion collar.

Is this swivel a universal fit or model-specific? The 1680203 is a universal fit part, compatible with any locking Spring-Lock or Clip-Lock post that lacks an expansion collar, rather than being tied to one specific boat model.