Parts satisfaction
The parts I ordered were what I received. Free shipping from the company is great. Very satisfied with the costumer service and products provided.
By Joshua
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
The parts I ordered were what I received. Free shipping from the company is great. Very satisfied with the costumer service and products provided.
By Joshua
Easy installation and work great!!
By Martin G.
It has more flow than original product and received in 3 days
By Brandon G.
Everything was perfect fast shipping and financing on products i give them an A+ all the way
By Larry K.
Exhaust had a hole in it when it arrived, the seller offered to send another one, but because i am in Australia i knew that it would cost them too much so i just got it welded up.
By Hayden A.
Parts were delivered promtly and were the exact products described. Couldn't ask for a better sales experience. Thanks
By Carl C.
Great price and shipping was faster than expected.
By Athanasios
Nothing but good things to say these guys know their s**t!! Chris was my salesman & was on point!
By Bryan (porter I.