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Sinister Diesel has a rating of 3.9 stars from 54 reviews, indicating that most customers are generally satisfied with their purchases. Reviewers satisfied with Sinister Diesel most frequently mention customer service. Sinister Diesel ranks 45th among Auto Parts sites.
Ordered my solutions kit, next day as I was broke down. UPS lost my shipment but still arrived within reason, but damaged. Contacted Sinister and they expedited me another so that I could get my truck back together and headed on my way. A+++
I purchased a 250 amp Sinister Diesel alternator that only lasted 8 months after it was installed. Even though it was past the purchase date not the installation date they were willing to make it right. Now after them sending me 4 wrong alternators. They don't know what to do so I'm playing the waiting game. The old style alternator is no longer available and the new style will not work on a 2007 Chevy Duramax Lt classic. The owner said he will make it right. So will see.
Everything is laid out in a very easy to follow form. I liked the fact I could put in my truck and it would list the specific items that fit it. No problems getting around in the website at all.
Had a couple problems with parts and that were fast to fix for me with no problems will keep getting parts untill done it looks great and runs better than ever
Tip for consumers:
Overall cost is a lot. Take your time one piece at a time. It'll get there
Products used:
320 amp alternator, cold air intake with pre-filter, Blue spring kit, coolant filtration filter, hot and cold intake with elbow, oil cap, fuel cap, and brake booster cap, plan to get more but there is a high cost for good looks
I ordered orings and they came within a couple days in a nice sealed packaging easy to find on the website highly recommendedfor anyone looking sor anything for their trucks
Products used:
Stickers
As soon as the arrived I couldn't wait to install them. Very nice kit and easy to install. Will look forward to purchasing further parts form sinister diesel.
Degas canister made from aluminum is a very nice improved product for my Ford diesel truck. Very happy with the product that I bought from sinister diesel thank you very much.
They had the cold air intake I wanted, and expedited shipping to get it to me on time to get it on my truck to complete a job I was having done. Nice guys, too!
Products used:
S&B Cold air intake.
Kit was shipped and arrived quickly, installation was very quick and easy and looks great in the engine bay. Really like the blue anodized finish and braided stainless lines.
Product is well designed and relativly easy to install! The only minor complaint is the quality of the clear plastic cover, the holes are a little off!
Got exactly what I ordered, the fit was perfect, the quality excellent, shipping fast. Service spot on.
Great products and selection. Website made it fast and easy to find what I need. Will be ordering through them again
Just as advertised. Great service! The part looks great! I won't buy from anyone else unless Sinister doesn't offer it.
Great product for the money, fast shipping, always arrives on time, would recommend to anyone else looking for a well made part for your diesel truck
Great products and take care of their customers. If you ever have a problem I can assure you that Julian at Sinister Diesel will help you.
Product showed up in a timely fashion and product was as described on web sight. Over all impressed.
They work and fit great. They also looked great until my ICP sensor blew 9 qts of oil all over them.
Ive order quite a few things from these guys and the rad cap and oil reservoir lid for my 6.4 and they have all worked and fit flawlessly
Products used:
Raditator cap and oil filter cap
Easy ordering. Fast shipping. We really appreciate the instructions that came with the parts. Thank you!
Great alternator got my truck up and running. Well worth it. 320 amps. Keeps batteries charged truck fires right up
My truck and Sinister Diesel parts go great together! I couldn't be happier with all the parts I have purchased.
I received it in a good time frame. The only thing that I would complain about is that the mounting bracket was wrong for the kit.
Love the quality and selection of parts available, definitely my go to place to buy parts. Plan on buying more parts
Parts came pretty quick havent installed just yet my truck is important and getting parts quickly is important
Parts came in very fast. Parts as advertise and very durable. Instructions were very clear and easy to follow.
A very good selection of spare parts. Managers know their stuff. Delivered quickly. What more could I wish for?
Always a pleasure doing business with sinister. Great customer service. My go to for diesel dress up and quality parts.
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