Boat & Personal Watercraft Registration Number Kit – Black 3" Decals (4 Sets)
This is a complete registration number kit for boats and personal watercraft, featuring 3-inch black alphanumeric decals. The 3-inch character height meets US Coast Guard and state requirements for vessel registration numbering when properly installed and contrasted with the hull color.
This kit serves as a direct replacement for QuickMariner 4 Sets 3" Marine Alpha-Numeric (Black), STIFFIE Uniline Black 3" ID Kit, and Hardline Products 320CLBLK.
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Installation Method: Simple peel-and-apply adhesive backing.
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Regulatory Compliance: 3-inch height meets USCG standards for numbering.
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Complete Set: Includes 4 complete sets of letters A-Z and numbers 0-9.
Compatible Applications
Confirm your application type in the table below.
| Application Type |
Details |
| Boats |
All recreational and commercial vessels requiring registration numbers. |
| Personal Watercraft |
Jet Skis, WaveRunners, Sea-Doos, and other PWCs. |
| Required Placement |
Both port and starboard sides of the vessel. |
| Regulatory Compliance |
Meets US Coast Guard requirements when installed per instructions. |
Technical Specifications
| Specification |
Value |
| Product Type |
Boat Registration Decal Kit |
| Installation |
Peel and apply adhesive |
| Color |
Black |
| Character Height |
3 inches (76.2 mm) |
| Character Style |
Block font |
| Material |
Marine-grade vinyl with UV protection |
| Adhesive Type |
Permanent waterproof adhesive |
| Weather Resistance |
UV resistant, fuel resistant, fade resistant |
| Scratch Resistance |
Yes |
| Chemical Resistance |
Resistant to fuel spillage and chemical deterioration |
| Quantity |
4 complete sets (A-Z, 0-9) - 144 total decals |
Package Contents
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4 x Sets of A-Z letters (Black)
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4 x Sets of 0-9 numbers (Black)
Installation Guide
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Prepare Surface: Clean the application area on the hull with soap and water or rubbing alcohol to remove any dirt, wax, or grime. Ensure the surface is completely dry.
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Plan Layout: Arrange your required registration numbers and letters. Use a measuring tape and masking tape to create a straight guideline for application.
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Check Spacing: Ensure characters are evenly spaced (typically with a 2-3 inch space between the prefix, numerals, and suffix) and adhere to local and federal regulations.
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Apply Decals: Carefully peel each decal from its backing paper. Align the top of the decal with your guideline and press it firmly onto the surface, starting from the center and working outwards.
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Final Press: Use a squeegee or a credit card to smooth out the decal and remove any air bubbles.
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Curing: Allow the adhesive to cure for at least 24 hours before exposing the vessel to water for the best long-term adhesion.
Troubleshooting & FAQ
How do I ensure these registration numbers are compliant?
These decals have a block-style font and a 3-inch height, which meets the US Coast Guard’s primary requirement. To ensure full compliance, you must install them on a contrasting background on both the port and starboard sides of your vessel's forward half. Always check your specific state regulations for any additional placement or spacing rules.
What kind of surfaces can I apply these decals to?
The permanent waterproof adhesive is designed for marine environments and will adhere strongly to most clean, smooth, and non-porous surfaces. This includes gelcoat, fiberglass, painted aluminum, and most plastics found on boat hulls and personal watercraft.
Are these decals resistant to saltwater and sun?
Yes. They are manufactured from marine-grade vinyl with UV protection. This material is designed to resist fading from sun exposure, deterioration from saltwater, and damage from fuel or chemical spillage.
OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product specifications (color, size, style) meet your vessel's and local regulatory requirements before application.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
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Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
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Fast Global Shipping: Free delivery worldwide in 5–15 days.
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Direct from Manufacturer: Competitive pricing without compromising quality.