Notchead Firewall Grommet
About NotcHead
NotcHead is a specialty automotive hardware brand born directly from the world of competition-level custom car building. Founded by Divers Street Rods Inc., the company traces its roots to the shop that built the “Ferrambo” — a legendary 1960 American Rambler fitted with a Ferrari 360 Modena powertrain that earned the prestigious 2008 Ridler Award at the Detroit Autorama. The revolutionary bolt designs featured on that car drew so much attention that the team began producing them for the public, officially debuting the NotcHead brand at SEMA 2012 in Las Vegas.
The philosophy behind every NotcHead product is simple: if it was good enough for a Ridler Award winner, it’s built to a standard far above ordinary hardware. NotcHead hose clamps and line clamps are a prime example — engineered as a clean, professional upgrade over traditional metal line clamps, eliminating the need for awkward Z-bends and offering a centered set-screw design that’s as functional as it is visually impressive.
Precision Hardware for Builders Who Care About the Details
NotcHead’s product lineup centers on high-grade, CNC-manufactured stainless steel fasteners, clamps, and automotive hardware. Their clamp assortment builder kits are a popular choice for custom fabricators and restorers who need a range of sizes in one comprehensive package — the 56-piece Hard Line Clamp Builder Kit being a standout offering for anyone routing brake, fuel, or coolant lines through a build.
Beyond clamping solutions, NotcHead also produces firewall grommets — polished, precision-machined ring components designed to dress up the firewall pass-throughs that most builders leave as an afterthought. These small details are exactly what separates a show-quality build from an ordinary resto. For builders routing and securing plumbing under the hood, fuel line brackets round out their hard-line management ecosystem, helping keep engine bay lines secure, properly spaced, and professionally finished.
Built for Show Cars, Trusted for Daily Builds
What sets NotcHead apart from generic fastener suppliers is the undeniable pedigree behind the product. Every clamp, bolt, and bracket was designed with the demands of world-class custom cars in mind — where judges scrutinize every last detail for four straight days. Whether you’re building a concours-level hot rod or simply want your engine bay to look as clean as possible, NotcHead delivers hardware that doesn’t compromise on quality or appearance.