Diesel Ops Recommendation
Very good tech support on the phone and very quick shipping
By Cummins are the B.
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
Very good tech support on the phone and very quick shipping
By Cummins are the B.
Recommended products and explained pros and cons of all. Easy to work with. Had my truck done ahead of schedule. Did a clean job and I could not be happier.
By KP
fast delivery, quick and easy install, everything fit perfect, I should have gotten the muffler though, guess I'm getting old lol
By Tom C.
Was an easy transaction with fast shipping and good price. The MBRP system I received was an east bolt on install, looks great and sounds great out the back, is a little loud in the cab though. MBRP is working with me to resolve the issue though.
By Jesse
I ordered a particular item that had been hard to find, and they delivered on time! Thank you!
By P. M.
The full exhaust system I bought was very well engineered and installed in less than an hour. It looked much better than stock and added performance gains and fuel economy. The price was fantastic and shipping was very fast. I will return for my next purchase no question. Thanks, Klint.
By Klint W.
I got Husky weather beater floor mats for my 2012 Jeep at the best price and fast shipping.
By Terry H.
I received the product in a timely manner a day it was easy to install. Will do business again.
By Ryan G.