Did these with a bunch of upgrades at same time. Glad I went with the high flow fittings. Take the 4 bolts out of the Alternator/power steering pump bracket and move it forward out of way and you will have plenty of room to get the old OEM fitting off of the drivers side head. You will need to do this anyway if installing the high flow banjo bolts. These are high quality fittings, thanks Riff Raff.

Not to bad of a job to do. Definitely cleaned up the idle.

Compare the old and new fittings, quite the difference, can definitely feel the difference when you step on the pedal.

Great product quite engine down a little

This fixes the most restrictive part of the fuel system and for under $30 why not.

can't go wrong, easy install since i had the truck apart, why not.

Part of my turbo project. I couldn't believe how restrictive the stock fittings were. These and the FRX have turned my 7.3 into a purring kitten.

Great product eliminated the Cackle smoothed out idle and flows way more fuel than the screened stock fittings. Don't forget to buy the o-rings. Most likely they will need to be replaced and when you see how much is evolved for install you will not want to have to fix a leak later. The passenger rear is the worse of it do to the tight location and removal of parts to access. Do like I did since you are already there and replace all of the fuel system o-rings at this time. It is well worth the time and money for the parts and it does what it says. Highly recommend this product. Fast delivery as well.

These were fairly easy to install. You might need an angled, line wrench for the rear fitting on the passenger side or some stubby wrenches.

Seems these should be paired with the bigger openings in the high flow banjo bolts to really "open up the system" as others have stated. One wonders what the purpose of the stock fitting with screen filters and restrictive passage was supposed to accomplish. Still haven't found a definitive answer on that one.