Wow!
All I have to say is that you have the best prices and fastest shipping I have ever found. That's a lot I am one happy customer!
By Luis P.
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
All I have to say is that you have the best prices and fastest shipping I have ever found. That's a lot I am one happy customer!
By Luis P.
Everything fit like it should, plenty of extra pipe, plenty of clamps, direct bolt on, no welding ,tight seals no leaks. This is they 3rd diamond eye exhaust iv bought no problems. Shipping was fast.
By Thomas M.
Item was shipped very quickly and arrived as expected. Good email communication etc. What you would expect out of any internet business.
By Scott A.
All quality equipment, packing was well done and the item arrived three days early. Other similar products don't come close to the quality of this air filter.
By Jose T.
Great power.
By Rick A.
Super people to deal with. The unit fits perfect. Easy to understand directions and unbeatable pricing. Absolutely will conduct more business with these folks in the future ... KUDOS !!!! 5 STARS
By Russell D.
The best and the loudest straight pipes I've ever heard
By rolando P.
Couldn't find a better price on a full exhaust and once purchased it was on my doorstep in no time at all!
By Brad Vander K.