just as good as oem product would recommend a set or two of these when doing a engine rebuild or manifold work.

I was able to get all old exhaust bolts out without breaking any on my 250,000+ mile 7.3L T444E Powerstroke, The last one gave me some grief, but did finally come out.

Based on the stress of taking the old bolts out, I decided new bolts would be prudent. Riffraff had brand new OEM bolts and they look awesome. I'll chase the bolt holes then use a bit of ARP Assembly Lubricant.

Note, I am also using new Remflex gaskets for the manifolds. From the factory there are no gaskets and I was getting blow-by on at least two cylinders maybe three at the manifold to block mounting. Remflex are awesome gaskets and should keep things nice and sealed for many years to come.

It was great that Riffraff had this bolt kit in stock and it was OEM.

Factory replacement bolt kit, and exactly what is needed for the 7.3 exhaust manifolds. Unlike standard hardware this OEM kit is a locking set so they won't rattle back out of the heads. Well worth the investment.

Very easy to install, good quality

OEM Quality

Great OEM quality. Perfect fit. Will last another 23 years!

Don't be fooled by the cheap fakes you find elsewhere. Tried them and they failed. These work perfectly, and hold up to the stress of many heat cycles.

Very fast shipping, order was correct and as described. Will order from Riffraff again.

Riff Raff Diesel is literally the bomb when it comes to diesel part and accessories not to mention the products that are faulty and Riff Raff remastered them to T x 100 times better I appreciate all your work and knowledge awesome people they don't care to take to time to answer your questions if whenever needed they have reached out to me on days the office is closed you can't beat there product nor service anywhere high-five