Once the headers are installed, keeping the fasteners tight is a constant battle. Over a decade ago, PROFORM introduced its line of Black-Oxide Wedge-Locking Header Bolts (for flanges and collectors), effectively ending the problems with loose header bolts. 

A short ten years later, PROFORM has added to its line of locking header bolts with its new Nickel-Plated Wedge-Locking Header Bolts for vintage V8 applications. The same trouble-free and dependable design enthusiasts have come to expect can now be had in a shiny silver finish. 

Official Release: 

Profoundly simple yet amazingly effective! Wedge-Locking Header Bolts have become the new standard in automotive bolt-fastening technology. Now introducing Nickel-Plated Wedge-Locking Header Bolts for vintage V8 applications. This groundbreaking product is already the definitive solution for automotive enthusiasts and professionals seeking a hassle-free and reliable method to secure their headers. 

A Simple, Effective Solution 

Gone are the days of relying on pins, clips, wires, or messy adhesive fluids. With PROFORM’s wedge-locking technology, securing headers has never been more straightforward or effective. And the best part? No more recurring expenses on replacements. These bolts are designed to be the last header bolts you’ll ever need. 

How It Works 

Each bolt is meticulously crafted and comes pre-assembled with a pair of unique locking washers. When torqued using any standard wrench, the washer’s super-hardened external teeth firmly grip the bottom of the bolt head and the top surface of the header flange. This ensures that a wedge-locking action effectively blocks any potential loosening rotation, thanks to the washer’s interfacing matching cams. 

What sets PROFORM’s wedge-locking header bolts apart is their reliance on tension rather than friction. In fact, contact with oil only enhances the wedge effect, further securing the bolt. And when it’s time for removal? It’s as straightforward as loosening any other standard bolt. These bolts can be lubricated and reused, ensuring longevity and value. 

Premium Quality and Versatility 

Reflecting PROFORM’s commitment to quality, these wedge-locking header bolts are manufactured using grade eight steel. They are available in both one inch and three-quarter inch under head lengths (UHL), ensuring compatibility with a wide range of Chevy, Ford, and Mopar engines. The added touch of nickel plating enhances the bolt’s appearance and offers resistance against corrosion and wear. 

For more information about PROFORM’s Nickel-Plated Wedge-Locking Header Bolts or to see retailers where they are available, visit www.ProformParts.com/wedge-locking-bolts.

Features: 

• Grade 8 Header Bolts offer enhanced stability with their unique self-locking design. 
• Torqued to 28+ ft/lbs, external teeth grip the bolt head & flange creating a self-locking grip that will not come loose. 
• The wedge-locking mechanism relies on tension, not friction, which prevents bolt-loosening rotations. 
• This Wedge-Locking tensioning technique actually strengthens with vibrations, and is even more effective when lubricated, further securing the bolt. 
• Each bolt and nut combo includes two sets of these special locking washers, which can be reused easily untightened, lubricated, with a standard wrench. 
• PROFORM’s cost-effective solution eliminates the need for pins, clips, wires, or adhesive fluids, saving both time and money.

Chris Holley

For the last twenty-five years, Chris has been an automotive college professor. Since 2003, he has taught at Pennsylvania College of Technology in Williamsport, PA. Chris instructs automotive electrical & electronics, HVAC, and various high-performance classes, which include the usage of a Mustang chassis dyno, flow benches, and various machining equipment. Recently, he had a vintage vehicle upholstery class added to his teaching assignments. Chris owns a ’67 273 Dart, a ’75 Slant-Six Dart, an ’06 5.7L Hemi Police Pursuit Charger, and a ’12 Cummins turbo diesel Ram, and he is a multi-time track champion (drag racing) with his ’69 340 Dart, which he has owned since 1989.