air filter
A+ company, fast shipping, quality items, will buy from them again.
By Frank J.
Saturday, November 7, 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
A+ company, fast shipping, quality items, will buy from them again.
By Frank J.
Good prices and fast
By jose
FAST DELIVERY
By B. G.
I purchased a diamond eye 4 inch exhaust. Very good price as well as fast delivery. The package came 3 days before it was supposed to.
By John
The guy that helped me on the phone was very polite and helpful. My stuff showed up quick and the price was excellent. Thanks
By Matthew P.
Prepainged flares shipped assembled which would have been great. Had there been weather stripping on all of the pieces and a few of the cosmetic bolts had not been cross threaded on and rattling around in the holes. I would have just tightened them up but the bolt/nut were crossthreaded and un usable. Contacted diesel ops multiple times. Most recent update Stated he was trying to get ahold of his dealer for replacements parts to ship to me. 3 weeks later no contact and no parts. For 800 $ this was a joke. Buy elsewhere.
By Jason E.
Response from Diesel Ops· Jan 5, 2017
Hello, I am glad we could come to a resolution on this and are working on getting this handled I am sorry you had this issue in the first place as I am sorry it was unresolved prior to you being asked to leave a review. Please let me know if there is anything else I can do to help you or anything you need. Thank you Chris (Sales Manager) 888-992-7299 ext 702
Good Product and easy to install.
By Marty T.
Very good produce defiantly a difference in power too
By ryan B.