George H.
9/6/2023
I can't compliment this repair and service business enough. We had two 45 foot RVs with Cummins engines that survived 60 days in Alaska and in badly need of service. They have 3 RV sites with...
Cummins Sales and Service
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1800 Fryar Ave
Sumner, WA 98390
Cummins Sales and Service located in Sumner provides expert service and repair by factory trained technicians on all Heavy, Medium and Light Duty Diesel and Natural Gas engines and powertrains, as well as field and shop service of Cummins Onan Power Generation equipment. Cummins also maintains a large inventory of Cummins Genuine parts and allied products. Call us in Sumner, WA at (425) 235-3400 or call toll free 1-800 Cummins
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Reviews
2.510 reviewsKarri L.
9/8/2025
The only positive thing I can say is that they have a good after hours drop off process and were able to look at our RV generator earlier than our scheduled appointment. Other than that, run away...
M B.
4/1/2024
Couldn't start a generator unit in a recently acquired Sprinter van. They got me in really fast. The part that was amazing is typically a malfunctioning generator can cost over $500 just to...
Scott S.
10/20/2023
We brought a onan 5500 generator that was in an RV. They did not want to deal with the Warranty people. End the price the gave us wasn't credibly high.. They charge this over at $700 to look at...
Joel U.
6/24/2016
We purchased a very large Genset from Cummins NW a few years ago. We are now noticing that hoses were installed incorrectly and into the wrong fuel ports. The unit still runs, the fuel is not...
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