ARP247-4202 Stud Kit

It’s pricey but you get what you pay for. Amazon makes it a better value and convenient.

Dropped right in, cylinder 5 and 6 are tough on the body but the cummins platform is easy to work on. I had to remove the Upper and Lower valve covers, the injector wiring, the rocker girdle/risder, and I had to remove most of the intake rockers to get a socket on, you might be able to do it with thin wall sockets. You also need to trim the rocker girdle with a die grinder or you won't be able to install. Adjusting the rockets is easy, see dark iron diesels video on youtbe. Should add some strength to my truck for a 467 upgrade.

ARP is second to none when it comes to fasteners. These worked great on my 6.7 Cummins. Install is a little work. Plan to adjust your rockers if you are performing a bolt to stud swap since you will have it apart anyway. It took about 5 hours to complete including the occasional break to rest the back and grab chow. I also replaced the rocker housing gasket with a new one. If you are a non-commercial owner of a Cummins (Dodge Ram etc), they you can register and find all the engine info you need at https://quickserve.cummins.com. You just need the serial number off the engine tag to register.

First set came used. Looked good. Nuts start good, then start dragging about 1/3 down threads. Shows studs have been torqued previously. Replacement set was great. Worth the money

I have a 2007 Dodge Ram 2500 with the 6.7L Cummins. Wish I had retrofitted to these studs years ago, but I didn't. Head gasket failed at around 98k miles. I hired a mobile diesel tech to come to my house and help me change the gasket and install the studs. Ended up getting a valve job too, so the upper end of the engine is like new. It was a lot of work! This mechanic torqued the nuts to 135 ft-lbs, which is 10 ft-lbs higher than Cummins does at the factory. He says that is a best practice that many mechanics are doing.For those who are replacing a failed head gasket, Cummins makes an Upper Engine Gasket Kit which has all the gaskets you'll need.

Seems like a quality product. Already had the head off, so easy to install

The studs come with an instruction manual. I would suggest going to glacier diesel for a more in depth, step by step, manual (available as a PDF). As far as the studs are concerned; everything works as it should, and holds better! I was always hesitant with the more powerful tunes on my programmer. These studs brought me peace of mind. The head stays where it should be, and my coolant levels are good. It took me me the better part of a day to install.So in short, I recommend these for anyone looking for extra insurance when throwing more power at a 6.7.

Excellent. As advertised. Have some mechanical sense and the install will go smoothly. Go slow, take you’re time. By all means I highly recommend getting a top side creeper. I bruised my chest pretty bad. Also, have a decent sized torque wrench. I have a 22” 1/2 inch and my arm was really tired after this.

Used on Cummins 6.7 2 years ago, no issues.

very fast delivery from the seller. very detailed instruction and easy to follow. I installed them on my ISB4.5 engine which is a 4 cylinder engine. there is one nut missing from the package. Luckily , I don't have to use all the stud and nuts. hopefully someone in the packing take good care in the future. Since my engine is fully working, so I did not have to removed the factory bolts all together, so I installed ARP stud one by one and tighten it to 170nm in one go. After few thousands kms, I re-tighten them, but found they were all tight and wont move at all. excellent!

Great product

Just did head gasket on 07 ram 6.7 408’000 km . Did 1 cold retorque followed by 2 hot retorques with 250 km between them . Working good !

Works perfect in my 2014 ram 3500. Holds 75psi of boost with my compounds. 60,000kms since i installed them and compounds and no problems