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Your cart is empty.Stage 8 Locking Header Bolt Kit with 8 millimeter Bolts for Ford 4.6 and 5.4 Liter Modular Engine features locking header bolts for Ford 4.6 and 5.4 liter modular engine with 8 millimeter bolts up to 2004. It includes (16 ea) 8 millimeter - 1.25 X 25 millimeter 6 point bolts with a double hex head (includes 3/16 inch recessed allen head) and matching locking retainers and clips.
sh00bie
2025-08-31 15:43:28
These things are dirt simple and they work, and they're cheap. In car-work that's a rare trifecta. Depending on the space you have to work in, they may not be super fast, but considering the alternatives, they're certainly fast enough.If you haven't used these before, only thing they don't tell you too much is you can bend the triangle-shaped flags over an edge to create a catch, if the tip wouldn't normally rotate against something.Only way these are backing out is if someone actually tries to wrench them out. They're not rattling, shaking, bouncing, vibrating or working themselves out on their own. A true positive-lock setup.Hardware was nice, threaded proper and torqued proper, too. Nothing to complain about there.
Taylor's
2025-08-24 17:42:42
Great idea these are if you are like me old school we could have used these 25 years ago on all ford and chevy engines as well as pontiac thank you great product
Scott M
2025-07-17 14:46:35
Worked just like they say. The head on the bolt isa little small. Had to use some washers so they fit the flange holes and slots properly but no big deal. Highly recommend them if you dont want to constantly retorque yiur header bolts
Andy Phillips
2025-06-11 15:27:20
These are much better quality than the bolts that came with my headers, and gave me a worry free install. They come with large and small triangular tabs to acomodate different size and locatino primaries. Great product at a great price. Amazon was the cheapest I could find these for.
Kyle
2025-05-04 12:27:26
Stage 8 has a 5 star product, however the set provided on Amazon are incomplete. There were supposed to be several sized retaining tabs (2 different sizes, as well as some bent tabs) and I only recieved one size, which didnt work in most spots. I found this has happened in other instances online and reached out to Stage 8 they sent me the missing parts, as they knew that Amazon is sending out the wrong product. I recommend this product, but buy it elsewhere!These fasteners are great, and when installed properly they work very well. I have done my exhaust header job several times (poor quality headers/burnt gaskets) and it is a huge nightmare, hopefully I will never have to do it again with these!
Alex
2025-05-01 18:48:35
Used these on my 2006 f150 and so far so good. I love the locking mechanism to keep the bolts from vibrating loose. They fit great with my jba headers.
Terry Palmer
2025-01-26 13:10:51
Cant go wrong with any of their products, work great every time. This is the third different vehicle i have done them on now and trust their kits, they have done their research and provided all the correct parts for that year/make/model
DavidC
2024-12-04 18:30:31
Installed Headers on my New 5.4 3v motor for my f150. These are the best header bolts period. Dont waste your time looking for something cheaper.
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