Mad4Metal Buick Nailhead Hilborn Injected Billet Aluminum Badge USA

CNC Machined in the USA  |  6061 Billet Aluminum  |  Complete Hardware Kit Included

By the early 1960s, Buick's 401 and 425 Nailhead V8s had earned a serious reputation on the drag strip. The engine's massive low-end torque made it a natural candidate for racing fuel systems, and when builders started bolting Hilborn mechanical fuel injection onto the Nailhead, the results turned heads at strips across the country. Hilborn injectors — with their individual throttle bodies and open stacks — were the mark of a purpose-built race engine. If your build pays tribute to that era, this badge captures exactly what's under the hood.

This is the Mad4Metal Buick Nailhead Hilborn Injected badge — machined from a solid billet of 6061-T6 aircraft-grade aluminum. The face is CNC cut with the Nailhead by Buick graphic derived from a period-correct 401/425 big block photo, capturing the look of a Hilborn-injected Nailhead as it appeared in the mid-to-late 1960s. Hand-polished to a mirror finish. No paint, no printing, no plastic.

Not stamped. Not cast. Not a sticker. Machined.

Hardware holes bored at 2-3/8" center-to-center on 1/4"-28 fine thread. Mount it on the valve cover and it looks like it belongs on a car that means business.

About the Finish

These badges are polished to a mirror finish, but if you look closely you'll see the machining marks from the CNC cutting process — fine, consistent toolpath lines across the face. Those marks are intentional. They're what separates a real machined billet part from something that was painted, cast in a mold, or made to look like metal. A perfectly mark-free, glassy smooth surface would look like painted plastic. The toolpath lines catch light at different angles depending on where you're standing, and that shifting reflection is the signature of a part that was actually cut on a machine. If you want to bring up the high spots even more, a quick pass with aluminum polish will do it — while keeping the machining character completely intact.

Where Can You Run It?

• Valve covers — passenger or driver side
• Engine fenders / inner fender panels
• Hood underside
• Firewall
• Dashboard or instrument panel
• Glove box door
• Toolbox lid
• Garage wall or man cave display
• Car trailer interior

Complete Kit — Everything Included

• ✅ Mad4Metal Buick Nailhead Hilborn Injected Billet Aluminum Badge
• ✅ 2x 1/4"-28 Stainless Steel Pan Head Screws (18-8 SS)
• ✅ 2x 1/4"-28 Nylon Lock Nuts

Specifications

Material	6061-T6 Aircraft Grade Billet Aluminum
Finish	Polished — machined surface marks visible (intentional character)
Height	2"
Width	3"
Thickness	3/16"
Bolt Hole Spacing (center to center)	2-3/8"
Fastener Thread	1/4"-28 Fine Thread
Fasteners Included	2x 18-8 Stainless Pan Head Screws + 2x Nylon Lock Nuts
Engine Reference	Buick Nailhead V8 401 / 425 cu in — Hilborn Injected
Weight	0.9 oz
Made In	USA 🇺🇸

Why Machined Aluminum Beats Everything Else

Cast zinc cracks under vibration. Plastic fades and chalks with heat cycles. Stick-on emblems peel — every time, no exceptions. 6061-T6 aluminum doesn't do any of those things. It's the same alloy used throughout the aerospace industry: light, strong, corrosion-resistant, and completely indifferent to temperature swings. When the finish dulls, you polish it back. No repainting, no replacing, no starting over. A Nailhead with Hilborn injection deserves hardware that takes the craft as seriously as the build does.

Made in the USA — Coeur d'Alene, Idaho

Mad4Metal is a brand of Jacer Enterprises, LLC, operating out of Coeur d'Alene, Idaho. Every badge is designed, programmed, and CNC machined in-house — start to finish. No outsourcing, no overseas production runs, no drop-shipping. If you need a badge with a different induction setup, a custom graphic, or something you don't see in the catalog, reach out. Custom orders are welcome.