very fast shipping
everything was great.....item arrived before there was an email stating it was shipped
By Richard M.
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
everything was great.....item arrived before there was an email stating it was shipped
By Richard M.
Very satisfied with the whole transaction.
By Tim O.
Fast service, delivery time and competitive pricing. Thanks
By "Robert Taylor C/O MHC Ken" T.
Their product was good quality and shipped on time like they said it would. However the directions were kind of hard to follow and could use a little bit of revising but other than that I'm greatly satisfied with the product.
By Daniel
Product was recived promptly and as described. Highly recommended.
By Aaron
get chip super fast totally happy take my truck apart install chip. no start? take out clean again install . no start . take out starts right up? look at paper work you sent me blank chip ? why? now try to call , leave message . no call back. call TS leave message . no call back . go on diesel stop ask about problem , get some responce on forum not from you ? want my chip programmed , or refund but cant get call back.
By jeff M.
Response from Diesel Ops· Apr 11, 2016
Hello Jeff, I am very sorry for the inconvenience of that chip being sent blank. I have a voicemail from you a half hour ago which I will be getting to in a few minutes. Please allow me a few minutes to finish up what I am working on and I will get this handled for you ASAP!
Had minor issue with my product. I called and tech support Got me up and running painlessly!! Thank You!
By EastCoast4x4
Bought a bakflip tonneau. Very prompt shipping and excellent communication. Cover was missing some hardware and these guys help me get it quickly and without any problems. Missing pieces werent their fault but they still did everything they could to help. The price was great and customer service was outstanding.
By PETE V K.