Awesome
Awesome customer service. A true military friendly business.
By Paul K.
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
Awesome customer service. A true military friendly business.
By Paul K.
The website was very easy to both use and understand and I would recommend this website to many of my friends.
By Very Satisfied C.
Extremely happy with this purchase
By Customer Rod S.
Knowledgeable, fast recieved next day
By Marvin
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.
Never received my intake. Customer service was rude and never helped. Update: Yes paypal said I received it because that is what tracking said. Now I called UPS and they confirmed the package was lost. They said they gave you guys my refund. I've tried calling and no answer.
By Nestor P.
Response from Diesel Ops· Jan 11, 2017
Hello Nestor, When you called to order the intake you were looking for we set the last one we had in this warehouse aside waiting for a call back to order. When you then ordered from a 3rd party site and did not notify us we had to ship from a warehouse that was farther from you. The intake still shipped the same day you ordered like most all of our orders but did not get to you as quick because it was not as close. When you then opened a PayPal Claim stating you did not receive it because you did not get it in the time frame you wanted because of the reasons above. I now see you have lost that case because PayPal has proven you did in fact receive the item. So if you do have anything we can do to help out here or have any need to discuss this further you are welcome to contact us. Thank you and have a great day
It has more flow than original product and received in 3 days
By Brandon G.