Stage 8 8906 Locking Header Bolt Kit with 8mm Bolts for Ford 4.6 and 5.4 Liter Modular Engine
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I have a 2001 F250 5 and they fit by perfectly. They should be able to fit your 150 without a problem
Their alloy steel content should provide better rust resistance than standard bolts since they are made of 4130 alloy steel. If you look up 4130's rust resistance on the web when you are done, So far, I am loving mine and there is no backtracking.
All Ford 4 cylinder engines can be used with them. There are six blocks and six
My role is that of a customer, not one of The locking header bolts I purchased are compatible with a 4 inch header rod. The number of Mustangs is 6. I really like what they do. The affixing process can be time consuming, but it is worthwhile
Selected User Reviews For Stage 8 8906 Locking Header Bolt Kit with 8mm Bolts for Ford 4.6 and 5.4 Liter Modular Engine
0, but the locking tabs do not reach every bolt. This is not a big deal, however, they work and fit fine on my 2005 F150 5. 0. A third party needs to redesign the lower triangular "locking" pieces since they are too short for the bolt and do not provide any protection against back out either. The two lengths provided aren't long enough, and even the longer ones did not It would have been impossible for me to reach the lower two bolts on either side to attach the retaining clips, anyway, so I didn't worry about it too much. In the event of a torque retorque, I can do so. In my opinion, I thought I should have received a product that fitted better for the price I paid. It is a pleasure to work with the bolts.
The cams and locking clips had to be installed by someone outside of my capabilities because of my limited ability. Unless you are passionate about jacking your car up, taking off your splash guards, and retorquing ANY other bolts every month, these are a MUST HAVE for any header installation. Don't let it stop you. Just do it ONCE, and you can move on.
Can't go wrong with any of their products, they perform beautifully every time. This is the third vehicle I've rebuilt, and I trust their kits, they have researched to make sure all the parts are the right ones for each year/make/model.
For my f150, I replaced the 4 3v motor with a 6. 8v motor. There is no question that these are the best header bolts on the market. It is not necessary to look for a cheaper option.
These are what I use to keep my headers on without leaking. My company is happy to use Stage 8 fasteners, as they are the industry standard.
Since you can't get to them easily, when tightening them, you should only use one ring.
On my 2006 F150, I have used these and they seem to be working well so far. My favorite feature is the way the bolts are held in place by the locking mechanism. I had no problems fitting them to my JBA.
Headers are important to me and I will never leave them out.
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