Great purchase
Everything I could ask
By Sidney D.
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
Everything I could ask
By Sidney D.
Gift arrived ahead of schedule. Great phone service. Highly recommend.
By Evan
Ordered a fleece fuel filter delete and it was at my house in no time plus I got it for a $10 cheaper.
By Jesse H.
This is the best thing I ever did to my truck. It really made difference in how the truck performs, and will extend the life and service of the truck. I pull a lot of heavy loads in the blue ridge mountains and don't have time for my truck to be in the shop with a clogged DPF, or having to worry about running out of DEF fluid. This kit was easy to install and only takes about 3 hrs with a simple set of metric tools. I did it by myself and was out on the road in less than 4 hrs. Fuel mileage has increased by 3-4 mpg and being able to actually smell and sound like a diesel again is awesome.
By Chad L.
Everything was just as described and the products worked great
By jason B.
Great job and service
By Chris Y.
Great shopping , made it easy and painless
By Stacey K.
Was very satisfied they sent what they had advertised! Even had extra hardware along! I'll definitely do business with you again!
By Keith N.