Great service
Great service
By Jb
Monday, November 9, 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.
Showing 615 reviews with 5 stars · Clear filters
Great service
By Jb
I am very happy with the chip i purchased. IT'S LIKE HAVING A NEW TRUCK
By Ricky M.
We had a problem with order but with one phone call things worked out very well. Excellent response and courtous treatment. I would recommend this to anyone buying parts. Keep up the great work!!!
By Theresa M. A.
I recommend diesel op for sure fast friendly service and great products.
By Ben
Awesome Prices!! Outstanding service! I will not hesitate shopping with them in the future!
By B R.
I purchased a gearbox tuner/exhaust kit from diesel ops, and had a couple of questions. Nick was great. very good people to deal with, and super fast shipping. Thanks, Chris
By Chris P.
fast shipping,easy to deal with
By Michael T.
Fast shipping my 4 inch Diamond Eye exhaust was just what I was looking for at a great price.
By Customer