Received my orders faster than …
Received my orders faster than expected. All are quality products as advertised!!
By Richard S.
Sunday, November 8, 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.
Showing 615 reviews with 5 stars · Clear filters
Received my orders faster than expected. All are quality products as advertised!!
By Richard S.
excellent product installed quick and easy ,flushed my 7.3 masterstroke three times before installing filter and top quality flush ,filter really caught a lot more contaminants after running for 2 hours changed filter it was totally full of slime rust and a sand like grit ,will run filter for about week and re-change filter again
By myron
Love the parts and service only thing i which the would have next day delivery
By Customer
quick and smooth thx
By Customer
great experience!
By Auto Parts of S.
Fast delivery! Ordered and it was delivered in two days time.
By Customer
Fast shipping is amazing. Got all my parts for a steal as as well. Thank you
By Maino
The business aspect of ordering, paying and receiving my products was A+. I received the right parts and they shipped quickly receiving them only 3 days later. The exhaust system I ordered from Flo-Pro had a bent section i had to manipulate to get it to fit and one of the clamps was missing a bolt. The EGR delete kit started out fairly easy and went flawlessly until one of the exhaust manifold bolts broke off. That was almost 1,000 dollars of unexpected expenses but no fault to Diesel Ops. They do a very good job of getting you the parts you order to you quickly and they recognize military members by offering a discount. As a veteran, thank you. If or when I need to order aftermarket parts again I'll turn to Diesel Ops.
By Joe