Front Axle Vaccum Knuckle & Tube Seal Kit Fit For 1998 1999 2000 2001 2002 2003 2004 Ford Super Duty Excursion F250 F350 F450 F550 Dana 50 60, Replace OEM Part # 50491, 50381, 41784-2

Every part you need is included in this kit. These parts by nature are not the easiest to replace. They fit correctly and what the listing says it will. The quality seems to be superior to some I have seen. With the right tools these are easy to install.

Perfect fit for a 1999 ford F250 Super duty. Don't for get to order the special tool to install them that you will use all of once then it becomes a paper weight (A very large useless paper weight)

I had to rewrite my review on this seal kit because I didn't look very closely at the parts so I am apologizing for the last review i did all parts were there. good price for this kit thank you.

This kit really saved the day and saved me a bunch of money having to buy the whole assembly rather than rebuild them like I did with this kit!

Worked great just had to add some silicone to center piece as it popped out after installing. Does make a tight seal just as I mentioned need a little silicone around center metal ring to stay in place.

Worked great for 1/4 the box store price .

Exactly what I ordered and in a timely manner.

We replaced these twice in a row on both sides of the truck and still had vacuum leaks. Used seal glide and cleaned everything very carefully . Oring seamed smaller or thinner than the oring we removed. Took apart a third time and reinstalled . Finally replaced with dorman the fourth time. Do yourself a favor and spend the extra to get the dorman. The dorman was noticeably a better fit. As an extra precaution we silicone everything when installing the dorman. Not sure if that was needed but after 4 time in a month it was nice to have the system fixed.