3" Marine Registration Numbers and Letters Kit – Fits Boats & Personal Watercraft (Replaces QuickMarine, NorthBoat, STIFFIE, Hardline)
3" Marine Registration Numbers and Letters Kit – Fits Boats & Personal Watercraft (Replaces QuickMarine, NorthBoat, STIFFIE, Hardline) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
3" Marine Registration Numbers and Letters Kit – Fits Boats &a...
Product Details
This 3" Marine Registration Numbers and Letters Sticker Kit contains four complete sets of alphanumeric characters (A-Z and 0-9) for legally marking your boat, jet ski, or other personal watercraft. Standing 3 inches tall, these decals meet U.S. Coast Guard requirements for vessel registration when applied to a contrasting background, ensuring you stay compliant on the water.
This kit serves as a direct replacement for other popular brands, including QuickMarine 3" Marine Alpha-Numeric Registration Kit, NorthBoat 4 Sets 3" Boat Letters Numbers Stickers, and Hardline Products 3" Registration Kits.
- Easy Installation: Simply peel and stick the high-tack adhesive vinyl characters onto any clean, smooth surface.
- Built for Marine Environments: Decals are 100% waterproof and finished with a UV-resistant coating to prevent fading, peeling, and damage from fuel or scratches.
- Coast Guard Compliant: The 3-inch character height meets federal regulations for visibility when installed correctly.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| QuickMarine | 3" Marine Alpha-Numeric Registration Kit |
| NorthBoat | 4 Sets 3" Boat Letters Numbers Stickers |
| STIFFIE | Hardline 3" Registration Decals |
| Hardline Products | 3" Registration Kit |
Technical Specs
- Product Type
- Marine Registration Numbers and Letters Sticker Kit
- Installation
- Peel and Stick Adhesive Vinyl
- Material
- High-Tack Adhesive Vinyl with UV Coating
- Dimensions
- 3 inches (76.2 mm) character height
- Color Options
- Red, Black, White, Blue, Green
- Quantity
- 4 sets of A-Z and 0-9 (total 144 decals)
- Waterproof
- Yes
- UV Resistant
- Yes
- Scratch Resistant
- Yes
- Fuel Spillage Resistant
- Yes
- Applications
- Boats, Jet Skis, PWC, Mailbox, Outdoor Signs
- Coast Guard Compliant
- Yes (when installed on contrasting background)
What’s in the Box
- 144x Marine Alpha-Numeric Registration Stickers (4 sets of A-Z, 4 sets of 0-9)
Installation Notes
- Thoroughly clean the application surface with a suitable cleaner to remove any dust, dirt, wax, or oils. Ensure the area is completely dry.
- Plan your layout. We recommend using a pencil and level to draw a faint, straight guideline for perfect alignment.
- Peel each character from its backing and apply it carefully, ensuring even spacing between characters and character groups as required by law.
- Federal law requires registration numbers to be affixed to the front half of the vessel, in a color that contrasts with the background, read from left to right, and at least 3 inches in height.
- Once applied, press firmly over each character. Full, permanent adhesion typically occurs within 24-48 hours, depending on temperature.
Troubleshooting & FAQ
How do I ensure the stickers are Coast Guard compliant?
To be compliant, the registration numbers must be at least 3 inches tall, which these are. They must also be in a color that contrasts with your hull (e.g., black letters on a white hull) and be affixed to the front half of your vessel. Always verify local and federal regulations.
What is the best way to apply these for a straight line?
After cleaning the area, use a measuring tape and a pencil (or a non-permanent marker) to draw a faint, level guideline on the hull where you want the stickers to go. Apply the bottom of each character along this line for a professional, straight result.
How long do the stickers take to fully cure?
While the high-tack adhesive is strong upon application, complete and permanent adhesion is typically achieved within 24 to 48 hours. Avoid high-pressure washing or abrasive contact during this initial period.
Will fuel or salt water damage these decals?
No. These decals are designed for the marine environment. They are made from a durable, waterproof vinyl with a protective UV coating, making them resistant to damage from salt water, sun exposure, scratches, and incidental fuel spillage.
Does this kit include enough characters for any registration number?
Yes. The kit includes four full sets of letters A-Z and numbers 0-9, for a total of 144 decals. This quantity is more than sufficient for any standard boat registration number combination, including required spacing.
Can I use these on an inflatable boat or a textured surface?
These decals are designed for smooth, hard surfaces like fiberglass, painted aluminum, or glass. They are not recommended for flexible, porous, or heavily textured surfaces, as they may not achieve a permanent, waterproof bond.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
