Pleasure to do business with a local company
Smooth ordering and fast shipping.
By Tony
Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
724 reviews
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Honesty, pricing, process and quality scores appear once 5 customers have rated them.
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
Smooth ordering and fast shipping.
By Tony
The price was pretty good and the shipping was fairly quick. However, there are no installation instructions. The EGR delete kit for the 6.4 powerstroke doesn't come with all the parts. There is no block off plate for where the EGR cooler connects to the intake manifold. I was very disappointed there is no technical or installation instructions of the website. It seems like they are just interested in making the sale, but not helping the customer after the sale.
By Ron H.
Response from Diesel Ops· Jan 5, 2017
Hello Ron, First off I want to apologize that there was no instructions with the purchase we have changed some things since this was done to prevent that from happening again to another customer, secondly I want to apologize that parts were missing we have also added checks since then to prevent this as well. This is something I am dedicated to making sure does not happen so I would like to make this right with you. please give me a call and lets talk about what we can do for you looking forward to hearing from you and getting this resolved Thank you Chris (Sales Manager) 888-992-7299 ext 702
Product just as described and super fast shipping.
By Steven K.
Your product was exactly as we were advised. excellent product! Thank you
By Roy W.
These guys are top notch Nick that I spoke with was incredibly helpful and got me going without a single issue Pricing was on point and shipping was prompt Thanks again
By Josh T.
Very good site was very helpful.
By Charles W.
Diesel Ops is fantastic, they sent my order out quick and I received it sooner then expected.
By Steve
Worked just as advertised
By Pete M.