Sinister Diesel
Reviews and Complaints

I've been using Sinister Diesel for a while now, and I gotta say, they're pretty good. I've ordered from them a couple of times, and the checkout process is easy peasy. Plus, they always deliver on time, which is a big plus in my book. The parts themselves are top-notch quality, and I've never had any issues with them. I reckon they're the go-to company for all your diesel needs. I'll definitely be buying more from them in the future.

Sinister Diesel is a great website for those who don't like computers and online shopping. The search bars and navigation are easy to use, which is a big plus for someone like me who doesn't like to spend too much time on the computer. Usually, I prefer to go to the store to order my parts, but Sinister Diesel made it simple for me to order my ebp sensor, pigtail, and blue spring upgrade for fuel. All of the parts fit perfectly and seem to be working well. I'm really happy with my purchase and would definitely recommend this website to anyone who needs to order parts for their vehicle.

I recently ordered some parts from Sinister Diesel and I gotta say, I was pretty impressed with the whole experience. The packaging was top-notch, with everything wrapped up nice and tight to ensure that nothing got damaged during shipping. And when I opened up the box, everything I had ordered was right there, ready to go.

Now, I'm not exactly a mechanic by trade, but I do like to tinker around with my truck from time to time. And I gotta say, the installation process for these parts was a breeze. That being said, I can definitely see how someone who isn't as mechanically inclined might struggle a bit. The installation booklet could definitely use a little more detail and instruction to help out those folks.

But once I got everything installed, I was really happy with how it all turned out. The parts fit perfectly and looked great on my truck. And even though I'm not exactly an expert, I could tell that the quality of the parts was top-notch.

All in all, I would definitely recommend Sinister Diesel to anyone who's looking for high-quality parts for their truck. The only thing I would caution is that if you're not super comfortable with mechanical stuff, you might want to have a friend or a professional help you out with the installation. But other than that, I think you'll be really happy with what you get from these guys.

I gotta say, if you're in the market for some new up pipes for your 7.3 Powerstroke, you gotta check out Sinister Diesel. These bad boys are top-notch quality, made with Stainless Steel and even come with heat wrap. And let me tell you, the fit is spot on. No more pesky slide clamps that just end up leaking all over the place. These pipes have welded ends that fit like a glove and the welds themselves are just beautiful.

I was a bit hesitant to spend the money on these pipes, but after doing some research and reading reviews, I knew I had to give them a shot. And boy am I glad I did. The difference in performance is night and day. My truck is running smoother and more efficiently than ever before.

Now, I ain't no mechanic or anything, but I can tell you that these pipes are the real deal. And the folks over at Sinister Diesel really know their stuff. They were super helpful when I had some questions about installation and even gave me some tips on how to get the most out of my new pipes.

Overall, I highly recommend Sinister Diesel and their replacement up pipes. You won't be disappointed.

I gotta say, Sinister Diesel really came through for me when I needed some help finding the right product for my truck. I was feeling pretty lost and didn't know where to turn, but their customer service team was super helpful and got me pointed in the right direction.

And let me tell you, I was pleasantly surprised when the product arrived even faster than I was expecting. That's always a nice bonus, right? But what really impressed me was the clear and easy-to-follow instructions that came with it. I'm no mechanic, but even I was able to install it without any trouble.

Since I got everything set up, my truck has been running like a dream. I'm really happy with the quality of the product and the service I received from Sinister Diesel. If you're looking for a reliable source for your truck needs, I definitely recommend giving them a try.

I gotta say, I'm a big fan of Sinister Diesel. I got a whole bunch of their parts on my 6.0 and let me tell you, they're the real deal. Their website is super easy to use, and I never have any trouble finding what I need. Plus, their shipping is lightning fast - I've never had to wait more than a few days for my parts to arrive.

But the thing that really sets Sinister Diesel apart is their customer service. These guys really know their stuff, and they're always happy to help you out with any questions or concerns you might have. They're just like a top tier company should be - professional, knowledgeable, and always ready to go the extra mile for their customers.

And of course, the products themselves are top notch. I've never had any issues with any of the parts I've gotten from Sinister Diesel - they're always high quality and built to last. If you're looking for parts for your F250, I highly recommend giving Sinister Diesel a try. You won't be disappointed!

I had a problem with my 05 GMC Duramax Primer pump assembly and I needed some technical advice. So, I called Sinister Diesel and they were very helpful. They gave me some great advice on how to repair it and even recommended some new O-Rings that I needed. They shipped them to me for free and didn't ask any questions. I was really impressed with their customer service.

It's hard to find companies that care about their customers these days, but Sinister Diesel is definitely one of them. They have a great Warranty and Technical department that are always willing to help. I really appreciate their friendly and helpful attitude.

Overall, I had a great experience with Sinister Diesel and I would definitely recommend them to anyone who needs help with their diesel engine. Thanks to Julian and the rest of the team for their excellent service!

I gotta say, Sinister Diesel is the real deal. I've been waiting for almost two months now for my purchase to arrive, but I can't really blame them for that. They've been dealing with some tough times, what with the whole COVID outbreak and all. Plus, they had to machine my cylinders with a 6-axis port main man, which I'm sure takes a lot of time and effort.

But let me tell you, when my products finally arrived, I was blown away. I've ordered from other diesel shops before, but none of them compare to Sinister Diesel. They've got everything I need for my build, and their parts are top-notch quality. I mean, I've got every other part in my build from Sinister, and I just had to get that suicide colour match to complete the look.

Overall, I'm really happy with my purchase from Sinister Diesel. Sure, it took a while to get here, but that's just how things are these days. And honestly, the wait was totally worth it. If you're looking for high-quality diesel parts, you can't go wrong with Sinister Diesel.

I bought a Sinister Diesel alternator with a 250 amp capacity. It was installed and worked fine for 8 months, but then it stopped working. I was worried because it was past the purchase date, but I contacted Sinister Diesel and they said they would help me out.

However, things didn't go smoothly. They sent me 4 different alternators, but none of them were the right one. I'm not sure what's going on, but it seems like they don't know what to do. I'm just waiting now to see what happens next.

The problem is that the old style alternator is no longer available, and the new style won't work on my 2007 Chevy Duramax Lt classic. I talked to the owner and he said he would make it right, but I'm not sure what that means.

Overall, I'm disappointed that the alternator didn't last longer, and I'm frustrated that it's taking so long to get it fixed. I hope Sinister Diesel can figure out a solution soon.

The Sinister Diesel Cold Side Charge Pipe for [protected] Ford Powerstroke 6.7L (Gray) is a great product, but the installation process was a bit more challenging than I expected. As a 72 year old geezer, I had to put in a lot of effort to get the top metal charge pipe to fit into the lower hose and slide the metal end onto the discharge port of the turbo. It took me about 2 1/2 hours to complete the two piece install, but I learned a lot from my mistakes and could do it in half the time if I had to do it again.

Despite the difficulty of the installation, I am very happy with the end product. Once installed, I immediately noticed a huge improvement in performance. Boost was easily 25% increased with acceleration, which was a pleasant surprise. I believe that the old plastic pipe must have been leaking for some time, and the new Sinister Diesel Cold Side Charge Pipe has fixed the issue.

However, I do wish that the install had consisted of three pieces with an intermediate hose that would have greatly simplified installation. The factory plastic design was three piece, and I think that would have made the installation process much easier.

Overall, I highly recommend the Sinister Diesel Cold Side Charge Pipe for [protected] Ford Powerstroke 6.7L (Gray) to anyone looking to improve the performance of their vehicle. Just be prepared for a bit of a challenge during the installation process.

I bought the first alternator & in a matter of weeks it was done for, so they sent a replacement (refurbished, as a favor to me) & within a matter of days it went. Had both alternators tested & yes they were faulty, nothing wrong with installation. I've tried repeatedly to contact them with no avail, & if your reading this review a paid good money! You would think they would stand behind their product & customers!

Got my stuff from Sinister Diesel and it came in pretty quick. Only thing that kinda sucked was the bracket for the kit was all wrong. But hey, it's all good, I just had to rig it up a bit to make it work. Other than that, everything was solid and worked like a charm. Definitely gonna keep coming back to these guys for my diesel needs.

Got my order from Sinister Diesel and I gotta say, I'm pretty stoked about it. Haven't had a chance to put the parts in yet, but they look like they're made of some solid stuff. And the best part? I managed to get it all in before the April 30th deadline. Score!