Excellent customer service
They will go out of their way to help you get exactly what you need. They called me to discuss my order, now that is true customer service. Will definitely order from here again.
By J. R.
Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
724 reviews
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Shop Aftermarket Diesel Parts for your Cummins, Powerstroke, Duramax, or any Diesel Vehicle. We specialize in quality products with better customer service!
Diesel Ops (dieselops.com) has 724 customer reviews on The Fair Hearing, with an average rating of 4.7 out of 5.
724 approved reviews, newest moderated first
They will go out of their way to help you get exactly what you need. They called me to discuss my order, now that is true customer service. Will definitely order from here again.
By J. R.
Very good product happy to spend my money on it very satisfied with it
By Justin R.
If you are ordering through their website I can guarantee you that you'll get fast shipping and if you have any questions somebody's always there to help I do wish that their actual store carried inventory so if you lived close by you could just go pick something up but unfortunately they don't really stock much
By Customer
I had ordered a turbo on a Monday and expected it to ship out within a few days, however after countless emails with no response, and multiple phone calls I finally got ahold of somebody. They shipped my turbo out a week and half late. I was offered a free shirt and other things for compensation, which I also never received. Good product from Industrial Injection, but awful customer service from Diesel Ops.
By Customer
Response from Diesel Ops· Jan 5, 2017
Hello, I am sorry you had any issues with this getting out on time and getting to you in a timely manner, I am unable to locate who you are or the order but will make this right however we need to do so. Please contact me so we can get this process rolling and get you taken care of looking forward to getting this taken care of for you. Thank you Chris (Sales Manager) 888-992-7299 ext 702
Got my parts out quick even around the holidays
By Joey F.
Ordered an s300 install kit by fleece was told free shipping. Next day got a call sayin fleece won't send it out unless I pay the 150 dollar shipping charge. Of course I was irritated about such a huge shipping cost so the man I spoke to by the name of Chris said I tell u what I'll pay half of it. Blew my mind. Great guys over there great customer service will purchase everything from them from here on out.
By Tyler
They sell great products. The staff are extremely helpful. They have my business form now on . Great Michigan company.
By Customer Greg W.
Great place super easy to deal with
By JB