The best license plate bumper plugs are sized to match the open hole and suited to the finish you want. Fukaisu plugs are a practical choice for measured 6–7 mm holes, while i5motorcycle offers low-profile chrome plugs for certain 1/4-inch bracket holes. For a vehicle-specific fastener, Rexka’s retainer is listed for selected GM applications. Compare fit and function before ordering: a cover plug, a fastening clip, and a screw retainer are not interchangeable.
| Product | Best For | Key Fit Detail |
|---|---|---|
| Fukaisu 12-Piece Plugs | Multiple small holes | 6–7 mm holes |
| Merdege Pack of 8 | General fastening-buckle use | No hole size stated |
| Rexka Retainer Grommets | Specified GM applications | 13/32-inch hole; 1/4-inch screw |
| DC, CLISENCE 10-Piece Plugs | Listed Ford-size holes | 4.5 mm hole diameter |
| i5motorcycle Chrome Plugs | Low-profile chrome finish | 6.2–7.2 mm screw holes |
Fukaisu 12-Piece Bumper Hole Plugs
Best for: Drivers who need several black plugs for measured 6–7 mm holes. The package contains 12 plugs, which can suit multiple replacements or projects. The listed applications include bumper, fender-liner, and license-plate mounting holes.
The plugs are made from PP and nylon. The product information describes them as wear- and heat-resistant and intended to resist cracking or deformation. Their black finish is a straightforward option when a low-visibility cover is preferred.
Limitation: Confirm the opening measures 6–7 mm before buying. These plugs are not specified for larger holes or as threaded screw retainers.
Merdege Pack Of 8 License Plate Hole Plugs
Best for: Buyers seeking a multipurpose black fastening buckle for vehicle-part installation. This eight-piece set is described as a car fixing buckle made of PA66 resin, with toughness and tensile strength intended to help it stay in place under some impact or compression.
Unlike products with a stated hole diameter, this listing emphasizes fastening performance and high-temperature stability rather than a precise fit measurement. Choose it if the part you are replacing uses a compatible buckle-style fastener and you can verify dimensions separately.
Limitation: The provided product details do not give a hole diameter or detailed vehicle fitment. Avoid assuming it will fit a particular license plate opening without checking the fastener dimensions.
Rexka GM License Plate Retainer Grommets
Best for: Owners of listed Buick, Cadillac, Chevrolet, and GMC applications who need a screw retainer rather than a simple hole cover. The package contains 10 white nylon retainers, and the listing identifies a 1/4-inch (#14) screw size, 5/8-inch head, 13/32-inch hole, and 5/16-inch stem length.
The product is identified as a replacement for GM part numbers 3907444 and 4755299. It is also described by several names, including license plate nut, nameplate retainer, and molding retainer. That makes the dimensions and vehicle application especially important when comparing it with a flush plug.
Limitation: This is a fastener retainer, not a solid decorative cap. Check the listed application and measurements before ordering.
DC, CLISENCE Black Plugs For 4.5 Mm Holes
Best for: Buyers whose application calls for the listed 4.5 mm Ford hole diameter. The set includes 10 black nylon push pins. Listed dimensions include a 13 mm top diameter, 16.5 mm overall length, 15.5 mm rod length, and 5.6 mm rod-bottom diameter.
The nylon material is described as wear- and corrosion-resistant. These details make the product easier to compare against an existing fastener or a measured opening. Choose it when the specified hole size and push-pin style match your repair.
Limitation: The listing specifies a Ford 4.5 mm hole diameter; it should not be treated as a universal plug for differently sized openings.
i5motorcycle Low-Profile Chrome Bumper Plugs
Best for: Drivers who want a chrome finish and have plastic-bumper holes left by a 1/4-inch front license plate bracket. The set contains four plugs and is listed for self-tapping screw holes measuring 6.2–7.2 mm. The product description says the metal plug heads are smaller and less intrusive than equivalent plastic plugs.
Choose this set when both the opening size and chrome appearance suit the vehicle. Its low-profile design distinguishes it from the black nylon or plastic options above.
Limitation: The stated fit is for plastic bumpers with the specified hole range. Confirm the hole diameter and desired finish before choosing it.
Buying Guide: How To Choose License Plate Bumper Plugs
What size plug do I need?
Measure the opening or the existing fastener before shopping. Match the hole diameter to the product’s stated fit: the products here range from a listed 4.5 mm application to 6–7 mm and 6.2–7.2 mm openings. Do not rely on a general description such as “universal” when dimensions are missing.
Do I need a cover plug or a retainer?
A cover plug fills an unused hole, while a retainer or buckle holds a screw or vehicle part. The Fukaisu and i5motorcycle products are described as plugs; Rexka is a nylon screw retainer. Select the part that matches the job rather than treating all bumper fasteners as interchangeable.
Which finish and material should I compare?
Black plugs are suited to buyers who want a dark, understated cover. The i5motorcycle set is chrome and has a low-profile metal head. Nylon, PP, and PA66 resin are named in the product details, but fit and installation style should remain the primary criteria.
How many plugs should I buy?
Count the holes that need coverage and consider whether you want spares. The listed packs contain four, eight, 10, or 12 pieces. A larger pack may be useful for several holes, but quantity does not compensate for a mismatched diameter.
Frequently Asked Questions
Can I use any bumper plug for a license plate hole?
No. Hole diameter, plug design, and whether the part is a cover or retainer all affect fit. Check measurements and the product’s stated application.
Are bumper plugs the same as license plate fasteners?
Not always. Some plugs cover unused openings, while retainers and buckles secure screws or components.
Should I measure the hole or the screw?
Measure the opening for a push-in plug. For a screw retainer, also check the stated screw size and retainer dimensions.
Which option has a chrome finish?
The i5motorcycle set is described as a set of four low-profile chrome bumper plugs.
Are the listed products all universal?
No. Some specify hole sizes or vehicle applications, while the Merdege listing does not provide a hole diameter in its supplied details. Verify fit before purchase.