Good people to deal with.
Bought the deviant egr delete for my lmm. Best price around.
By Jason
Saturday, November 7, 2026 · Customer reviews of US businesses
The Fair Hearing score
Excellent
724 reviews
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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
Bought the deviant egr delete for my lmm. Best price around.
By Jason
Ordered off the website. Within 3 days the order was on my door step. Instructions were emailed to me with the confirmation of the order. Printed out and getting it all in and put together! Recommend Diesel Ops to anybody looking for truck parts!
By Matthew J.
Overall decent experience, no major problems. Did however have a small problem with shipment tracking numbers, had to email them to get all 4, initially only sent 2. Did not receive their 10% discount as advertised due to it not being applicable to kits. Did not learn it until I was able to read the fine print
By Kevin DeGroff, Minot, N.
The Magna flow exhaust I selected was the right one for my vehicle, fit like a glove and was good quality. Diesel ops responded to questions promptly.
By Daniel S.
Site was easy to find what suited my needs. Also talked to support on phone an was friendly an helpful
By Pete
So I recently purchased the exlink auto agent and it's great. After u get pass the intro the rest is easy. And it only gets super easy. To program your truck. Just be patient. On understanding the software. And customer service is great if u need any advice. They will walk u through it. Great product that your truck would appreciate.
By Jesse
Good experience, the only thing different they could have done is sent an email with a tracking number. When I ordered the water pump they said I would get an email when the order shipped and never did
By Custotmer
It's a 203 not 205
By mike