Awsome!!!
Very awsome site an they are very helpful ..
By 3-M Cattle C.
Sunday, November 8, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
724 reviews
Select a line to read only those reviews.
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.
Showing 615 reviews with 5 stars · Clear filters
Very awsome site an they are very helpful ..
By 3-M Cattle C.
Great customer service. They helped me with all my questions and shipped out my stuff fast. Could have asked for better service.
By matthew
I was able to contact and talk to someone right away with questions. And shipped fast tjanks
By Wendy
The guys here got me a part I needed delivered to my house that they didn't carry within 24hours, can't beat that! Thank you again.
By Sean
I have bought many parts for my pickup, snowmobiles, bikes, etc. My experiences have ranged from absolutely awful to excellent. Most places seem to have their positives and negatives. My experience with Diesel Ops has been excellent. I contacted them about buying a fass lift pump and was advised on which one would work the best for me. They took the time to make sure i was getting the absolute best product for my pickup (which wasn't the most expensive). After deciding which pump to get the order was placed at an excellent price and was shipped and to my house in two days. I will be buying all my future parts through diesel ops.
By Matthew
When I order a part I expect it to be exactly like described and I want it ASAP! We'll that's exsactly what I got. A great product and had it the next day. No hassle no problems. Can't thank you enough. Will be back for more.
By Gavin
The service that I received was second to none.One of the owners called me back about the innercooler for my duramax and completely answered all my questions.He told me if I had any concerns to email him after hours and leave a contact number and he would call me back.Their customer care is what will have me ordering again.You will not go wrong with this company
By Martin P.
Great service and communication
By Genevieve