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SKU #: CMNS-3947574 MPN #: 3947574

Cummins 3947574 Belt Tensioner Assembly 03-18 Dodge 5.9L / 6.7L Cummins

$221.14
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Description
As your Cummins develops some miles, the belt tensioner's spring can lose its ability to maintain tension, causing uneven wear of your belt, or the belt to completely fail altogether. If its time to replace your tensioner, check out this genuine Cummins direct replacement.
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As your Cummins develops some miles, the belt tensioner's spring can lose its ability to maintain tension, causing uneven wear of your belt, or the belt to completely fail altogether. If its time to replace your tensioner, check out this genuine Cummins direct replacement.
Vehicle Fitment
2003-2018 Dodge 5.9L / 6.7L Cummins
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
About Cummins
While we are obvious supporters of the aftermarket, there are times when it does make the most sense to stick with factory Cummins components for various upgrades or repairs. While we do not carry every component, we do stock items that we feel are a good choice when making the decision to go stock or aftermarket.
If you don't see what you're after, feel free to give us a call or send an e-mail to cs@dieselpowerproducts.com and we would be happy to assist.

Overall rating: 4.4545455 / 5 from 11 reviews.

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Reviews

Dayco in a cummins box. Scam

"Save your money and buy a different brand. I always try to buy cummins parts. This tensioner has dayco stamped right on it with a cummins and a dayco part number. Getting scammed by cummins. What a joke. They could atleast have the factory in China stamp cummins on it."

Matt (1/5)

Belt tensioner

"Factory original, great packaging, quality & durable, fixed flapping belt issues"

David E. (5/5)

Arrived fast and worked great

"A discounted price compared to buying from the manufacturer, came fast and was easy to install. Would definitely recommend this over an after market one. The exact same tensioner that came on my truck when new."

Hunter (5/5)

OEM parts rock!!

"When it comes to simple maintenance, I LOVE OEM parts. So I was very pleased when this tensioner showed up and was in a OEM Cummins parts box. It bolted right up to my Cummins and I had 0 issues. 5/5 Stars!"

JT H. (5/5)

I decided to go OEM

"I decided to go OEM on the Tensioner. New spring is super tight, so it should last. The only gripe I have is that at this price, the pulley wheel should be metal. I believe the Gates tensioner is metal. It probably won't matter, but metal is metal, ya know?"

Sean M. (4/5)

Belt Tensioner

"Works great on my 6. 7."

Richard B. (5/5)

Perfect Replacement.

"Cummins oem part. Worked better than my old one and not worth trying to get an offbrand. Quick shipping!"

Doug (5/5)

Easy swap out part ,

"Easy swap out part , just doing the basic pm while fixing other things ."

KRIS P. (5/5)

As expected

"As expected"

Trey C. (5/5)

got it fast and in

"got it fast and in good shape thanks"

Douglas R. (5/5)

Q&A

hello what is the toque of the bolt that holds the belt tensioner to the motor
That will need to be tightened to 30 ft lbs. -Mark
Hello, this is the adjuster where one utilizes a 3/8"" ratchet or similar to re position the pulley creating slack in the belt to remove and install correct? If not, what is the assembly that I am talking about? Thank you in advance.
You are correct yes.