Proform’s New Nickel Plated Wedge-Locking Header Bolts

As a kid, the first thing you learn is the immediate performance gain that comes from swapping out those old rusty manifolds for a decent set of headers. Even if you were lugging around a worn-out 318, a second-hand pair of shorties would wake that small block up. But often the factory studs needed to go, and that spelt problems: almost without fail aftermarket header bolts would back out, causing obnoxious exhaust leaks. Well, consider that a thing of the past!

Proform’s Wedge-Locking Header Bolts have been around for a few years now (in the black oxide form) and have proven their worth to street rodders, cruisers and high-end performance engine builders. The unique interlocking washer system ensures that once they’ve been torqued down, these header bolts ain’t going anywhere – whether you’re snugging down to iron or aluminum heads.

Now, Proform offers these bad boys in a brilliant Nickel Plated Finish. So if the black oxide is a little too drab for your engine compartment, these nickel-plated header bolts will be right up your alley. We did a video on the original black ones a while back (see video attached below). Otherwise, check out the original press release HERE:

A decade ago we introduced Wedge-Locking Header Bolts to the high performance aftermarket, and they have been a huge success. No janky tools, small parts, or blocking devices…just tighten them and you’re good to go. We are now adding a new Nickel Plated Finish to our most popular vehicle applications, so now customers will only have to choose between shiny silver or black.

Applications (12 Bolts, 3/8″-16 Thread):
Chevy V6 & Small Block V8 265-400; Buick/Olds/Pontiac V8 before ’79 ; AMC V8;
Chrysler B/RB Engines (excluding 413)

P/N-66827: Length: 3/4 in.
P/N-66824: Length: 1 in.
Applications (16 Bolts, 3/8″-16 Thread):
Chevy Big-Block 396-502 (excluding 348 & 409);
Ford 5.0L, SB 289-302-351W; Mopar 413

P/N-66823: Length: 3/4 in.
P/N-66825: Length: 1 in.
NEW! Application (16 Bolts, 8mm Thread):
Ford V8: 4.6 & 5.4 Liter; 2005 & Newer Modular

P/N-66826: Length: 1.181 in.
These bolts are in-stock and shipping!

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Kevin Shaw

Editor-in-Chief – Kevin Shaw is a decade-long powersports and automotive journalist whose love for things that go too fast has led him to launching Mopar Connection Magazine. Almost always found with stained hands and dirt under his fingernails, Kevin has an eye for the technical while keeping a eye out for beautiful photography and a great story. He's also the co-author of "The Chrysler B-Body Restoration Guide."

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