Springfield Marine Transom Tuff'Ner Heavy-Duty Support Plate, 4 x 17 Inch, Part 1780203

The Springfield Marine Transom Tuff'Ner (part number 1780203) is a heavy-duty transom support plate built to reinforce the stress area of a boat's transom. Cast in high-strength aluminum, it evenly distributes the repeated shock and flex loads that a transom absorbs during fast starts, high-speed running, and sharp turns, helping prevent the cracking and fatigue that develop around outboard or sterndrive mounting points over time. This is the 4 inch by 17 inch heavy-duty size, sold as a single retail unit, and finished in gray powder coat for corrosion resistance in a marine environment.

Installation is straightforward: the plate mounts using two bolts (not included) on a 12-15/16 inch bolt pattern, allowing it to be added to an existing transom without extensive modification. Because it reinforces from the exterior surface of the transom, it is a practical upgrade for boat owners looking to add strength and extend the service life of the transom without pulling the outboard or replacing the transom core. At 3 pounds, it adds meaningful reinforcement without adding significant weight to the stern.

Specifications

• Brand: Springfield Marine
• Manufacturer Part Number: 1780203
• Product Line: Tuff'Ner Heavy-Duty Transom Support Plate
• Size: 4 inches x 17 inches
• Bolt Pattern: 12-15/16 inches
• Mounting Hardware: Two bolts, not included
• Material: Cast aluminum
• Finish: Gray powder coat
• Weight: 3 pounds
• Package Quantity: 1 (retail)
• UPC: 038132512030

Fitment

The Tuff'Ner 1780203 is a universal-fit transom support plate intended for surface mounting to a boat transom using its 12-15/16 inch two-bolt pattern; it is not restricted to a specific boat make, model, or engine.

Frequently Asked Questions

What size is the Springfield Tuff'Ner 1780203? The Springfield Marine Transom Tuff'Ner 1780203 measures 4 inches by 17 inches, making it the heavy-duty size in the Tuff'Ner support plate line.

What bolt pattern does this transom support plate use? It mounts on a 12-15/16 inch bolt pattern using two bolts, which are not included with part 1780203.

What is the Transom Tuff'Ner made of? It is cast in high-strength aluminum and finished in gray powder coat for corrosion resistance in marine use.

Does the 1780203 Tuff'Ner include mounting bolts? No, the two bolts needed to mount the Tuff'Ner 1780203 to the transom are not included and must be sourced separately to match the 12-15/16 inch bolt pattern.

How much does the Springfield Tuff'Ner 1780203 weigh? This transom support plate weighs 3 pounds.

What does the Transom Tuff'Ner actually do? The Tuff'Ner adds strength to a boat's transom by evenly distributing the forces generated during fast starts, high-speed runs, and sharp turns, helping reduce transom fatigue over time.

Is the Springfield 1780203 the heavy-duty or economy version? Part number 1780203 is the heavy-duty Tuff'Ner, sized 4 inches by 17 inches; Springfield also offers a smaller economy version in a different size under a different part number.

Will the Tuff'Ner 1780203 fit my boat? The Tuff'Ner 1780203 is a universal surface-mount transom support plate that installs with a 12-15/16 inch two-bolt pattern, so it is not limited to a specific boat make or model.

How many Tuff'Ner plates come in one package? Springfield part 1780203 is sold as a single retail unit, one plate per package.

What color is the Springfield Transom Tuff'Ner? The 1780203 Transom Tuff'Ner has a gray powder coat finish.

Do I need to remove my outboard to install the Tuff'Ner? The Tuff'Ner 1780203 mounts to the transom surface with two bolts on its 12-15/16 inch bolt pattern, so installation does not require removing the transom core.