Great product!! Everything came as pictured with tools and instructions I will be using this on my 6.2 ls motor that I’m rebuilding so this will be a nice piece to add thanks xotic performance!!

Great bolts came as pictured with instructions and help thanks xotic you rock

Good quality

Middle head studs dont fit for the non vtec ones. They need 2 slightly longer head studs.

These studs are the next best thing compared to the big name!!! Way nicer than all the other more budget friendly studs out there!. We will see how they do with 30lbs of boost!

Great product very straightforward and easy to install

My order arrived only a few days after arrival. At half the price of the other “brand”, this was a no-brainer. My stock OEM head bolts were stretched so these will be a big upgrade.

Work great so far

Straightforward and easy installation is definitely holding up to what I’m using the truck for great product so far!

2006 Ford f350 4x4 cab and chassis, worked great. Just what the truck needed. The stand pipes are hard to separate but with some muscle they are able to come apart. The green o-ring was the only part I had no idea on where it went.

I haven't installed them yet, have to replace the camshafts. bad rockers arm deep grooved the lobes

I've been running these in my truck for almost a year without an issue.I had just done a bunch of performance work to my truck (injectors, turbo, CP3, tune, etc) and blew a head gasket. @truckmaster07 recommended this brand and I see why. Obviously well made. Comes with sockets, an extra long Alan wrench, grease, and VERY clear installation instructions. And the packaging is an experience by itself. So much attention to detail. Not to mention the fasteners have probably the best finish I've ever seen on bolts, nuts, and washers (I'm a quality Engineer with machining background).

Easy to install first time using them like how everything came in box and prepared nicely packaged

I used this on a big block setup, and the hardware felt right for the job. The weight is what I would expect from real engine fasteners, and the material feels strong and properly machined rather than lightweight or questionable. The 12-point heads are clean, and the fit was solid during installation.This is not the kind of part where I want to gamble on poor quality, and these felt consistent from bolt to bolt. The versatility is good across the listed older big block applications, but I still checked fitment carefully before using them because engine parts are not something to guess on. Installation was straightforward, and the instructions/spec information were clear enough to follow with normal engine assembly procedures.The durability is the main reason I like them. They feel like they are made to hold torque properly, and the finish looked clean out of the package. The value is good compared with piecing together questionable hardware, especially when doing a repair or build where dependable fasteners matter. I would use them again.

The intercooler pipe is fantastic and a huge upgrade over the stock pipe. Had a small hiccup and the service department was on it, took care of everything, and made sure it was all taken care of. Will definitely buy more products from them!

I purchased this to replace the stock FOMOCO cold sise charge pipe for a 2018 F350 (two of which previously failed). I purchased this after reviewing several videos. This particular item seems to be made of high quantity material. Finish and durability seem good out of the box.4 stars because, while it does fit, fitment is marginal and installation is a little difficult. Clamps are sufficient, but require adjustment and tightening after running for a few hundred miles.Truck seems to have a little more pep.

Balancer bolt is just as strong as competition but costs less and comes with extras!

🌹

The bolt had me upon opening the box. Very substantial, well made, excellent quality and a very thick washer. This thing is built for business. Comes with absolutely everything you will need to secure that bolt to the crank; socket, lube, air freshener… ok, so prob don’t need the air freshener. But the other stuff, wow. It went on without any issues or fan fair. Would buy again.

Ok

I pulled these covers off my '96 Ram 2500 when the original covers started leaking oil around the edges. The fit is perfect with no forcing and no gaps, and the factory bolt holes lined up perfectly with absolutely no adjustments needed. To install them, I removed the old valve covers and installed these using the factory screws. The seal around the outer edges of the covers sits flat against the valve cover, and there is no movement or rocking once it is bolted down to the head.Oil containment was the main reason I wanted these covers. Additionally, the finish on the covers is aesthetically pleasing in the engine compartment without looking overly "done". The sealing ability of the covers has also held up well so far under normal driving conditions and occasional towing. Time will tell how well they hold up over the long term, but I feel confident they will stay in place because they fit their respective locations well.

Great quality

Good brand had a high pressure oil leak changed them out in August of 2025 and still holding strong would highly recomend

Perfect fit on my 2021 Super Duty. It took me about 40 minutes to install. Make sure you lube the fittings up.

Have to work with it to get it on the vehicle