Swap the factory housing for a CAT spin on and they're super cheap. You don't want dirty fuel going through your fuel system, I'd rather spend extra on filters.
Pros: super cheap, clean fuel
Reviews of CAT parts For Business
Average Rating
?
The manufacturer's average rating is calculated based on ratings of all its spare parts. It determines the place in the manufacturer ranking
2.8
Manufacturer Ranking
-
5
Spare Parts
2
Country
Belgium
Website
parts.cat.com
Spare Parts
Fuel filter I do every oil change but swapped to the CAT filter. It’s cheaper, filters better, and would last longer.
Pros: cheaper, filters better, lasts longer
Mileage: 130000 km
I opted to go with a Black Market Performance fuel filter kit. With this kit, I now use a CAT 1R-0750 filter which costs about $30 IIRC and can be bought from any truck shop in the country. As other commenters have said - the fuel filter(s) and system is not a place to cheap out given the cost of replacing a diesel engine and given the general "gunky" nature of diesel fuel, in general. Besides completely replacing the front fuel filter itself with a filter that is easier to obtain, it filters down to something crazy low. I don't recall the exact micron level but I know it was markedly improved over factory.
Pros: markedly improved over factory
Cons: customer service was hard
Part number: 1R-0750
CAT fuel filter upgrade on a Duramax is a no brainer!
Pros: easy upgrade
I wouldn't use the cat filters the micron rating is no better than oem filters just a larger filter plus the cat filter was not designed for the Duramax which mounts the filter horizontal and the cat filter doesn't have an antidrain back valve so when engine is off the oil will drain back to the pan, you can check the oil level right after you shut the engine off but if it sits a while the level will appear over full when infact it may be ok or low
Cons: poor micron rating, no anti-drain valve, oil drain back, not designed for Duramax
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Owner reviews of CAT products
The CAT brand is registered in Belgium. Official website: https://parts.cat.com/ru/catcorp .
In March 2026, PartReview recorded 5 reviews across 2 parts by CAT. Average rating — 2.8 out of 5.
CAT is not yet in the PartReview manufacturers ranking due to insufficient reviews.
Popular CAT parts
The most popular CAT products on PartReview:
- Fuel filter CAT - 4 reviews. PR Score — not available yet, average rating — 4.7.
- Oil filter CAT - 1 review. PR Score — not available yet, average rating — 1.
Most owner reviews about CAT parts are collected on these pages.
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