Mr. Cool is a manufacturer and distributor of over 15,000 OEM replacements for hundreds of Original Equipment Manufacturers.  Products include: 

  • Heat Exchangers
  • Oil Coolers
  • Aftercoolers
  • Truck radiators

We specialize in marine engine cooling and can assist with new designs, custom designs or redesigns of your current configuration.  If you have an old craft you want functioning like new or a recent build and a bit of bad luck, we can assist with it all.  Recently we’ve included Fresh Water Cooling kits amongst our offerings which allows us to cool a variety of small block engines that may not have come from the OEM that way. 

Well-known and respected for our customer service we have grown steadily over the last 20 years as a leader in the industry. We have proven to be your reliable source for engine cooling products including Barr Exhaust Systems as well. 

Major OEM products we replace include:

  • Mercruiser / Mercury®
  • Volvo®
  • Caterpillar®
  • Cummins®
  • Onan® Generators
  • Westerbeke® Generators and propulsion engines
  • Kohler®
  • SeaKeeper®

You can see if we have your part by searching our product database by clicking here.  If not, Contact Mr. Cool today to learn what we can do for you at 248-960-7850 OR  866-726-2665.   

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3,491 Verified Customer Reviews

3,491 Customer Ratings and Reviews

Shopper Approved collects trusted reviews from customers who have made a verified purchase.

4.8

Overall Star
Rating

5 Shopper Approved - Review Star
2988
(85.6%)
4 Shopper Approved - Review Star
424
(12.1%)
3 Shopper Approved - Review Star
59
(1.7%)
2 Shopper Approved - Review Star
12
(0.3%)
1 Shopper Approved - Review Star
8
(0.2%)


5-star reviews
2,500+

5-star reviews

9 years collecting reviews

About this Company

Mr. Cool is a manufacturer and distributor of over 15,000 OEM replacements for hundreds of Original Equipment Manufacturers.  Products include: 

  • Heat Exchangers
  • Oil Coolers
  • Aftercoolers
  • Truck radiators

We specialize in marine engine cooling and can assist with new designs, custom designs or redesigns of your current configuration.  If you have an old craft you want functioning like new or a recent build and a bit of bad luck, we can assist with it all.  Recently we’ve included Fresh Water Cooling kits amongst our offerings which allows us to cool a variety of small block engines that may not have come from the OEM that way. 

Well-known and respected for our customer service we have grown steadily over the last 20 years as a leader in the industry. We have proven to be your reliable source for engine cooling products including Barr Exhaust Systems as well. 

Major OEM products we replace include:

  • Mercruiser / Mercury®
  • Volvo®
  • Caterpillar®
  • Cummins®
  • Onan® Generators
  • Westerbeke® Generators and propulsion engines
  • Kohler®
  • SeaKeeper®

You can see if we have your part by searching our product database by clicking here.  If not, Contact Mr. Cool today to learn what we can do for you at 248-960-7850 OR  866-726-2665.   

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K
Shopper Approved - Verified Customer kieran K.
2 days ago , NY

Always great products and prices


M
Shopper Approved - Verified Customer Mike P.
2 days ago , NY

Surprise on availability!


J
Shopper Approved - Verified Customer Juan G.
2 days ago , FL

Excellent web page and price. Excellent references from other customers!

Communication
5/5
3910582 Cummins Heat Exchanger
3910582 Cummins Heat Exchanger
Read more reviews about this product

2 days ago

Mr Cool is an excellent company produce excellent products at a reasonable prices and delivers them to your door in record time. 100 points to Mr Cool.


S
Shopper Approved - Verified Customer shelby L.
3 days ago , FL

great


T
Shopper Approved - Verified Customer Timothy D.
3 days ago , PA

X


C
Shopper Approved - Verified Customer Chris G.
4 days ago , FL

One email right part

Communication
5/5
4003582 Cummins Transmission/Gear Cooler
4003582 Cummins Transmission/Gear Cooler
Read more reviews about this product

4 days ago

Great service


C
Shopper Approved - Verified Customer Charles G.
5 days ago , MD

It’s nice to have an OEM alternative.


J
Shopper Approved - Verified Customer Jorge A.
5 days ago , PR

Excelen..


B
Shopper Approved - Verified Customer Bob B.
6 days ago , CA

Pretty easy. Hard to find warranty info though so taking a chance.


B
Shopper Approved - Verified Customer Bryce R.
6 days ago , AK

Very Quick and efficient service


A
Shopper Approved - Verified Customer Anonymous Customer
6 days ago , NY

Product was on time, good quality and an exact fit.


K
Shopper Approved - Verified Customer Kevin M.
1 week ago , CA

Easy ordering process


H
Shopper Approved - Verified Customer Hugh M.
1 week ago , NY

Website is easy to use. The cooler arrived on time, fit and finish was excellent.


A
Shopper Approved - Verified Customer Alex G.
1 week ago , TN

Great product fast shipping!


T
Shopper Approved - Verified Customer teddi Z.
1 week ago , CA

great


B
Shopper Approved - Verified Customer Bob W.
1 week ago , CA

Quick and efficient checkout!


G
Shopper Approved - Verified Customer Gary N.
1 week ago , FL

Good


J
Shopper Approved - Verified Customer JOHN P.
1 week ago , FL

VERY GOOD


J
Shopper Approved - Verified Customer Jeffrey L.
1 week ago , CA

Phone support was very helpfull


V
Shopper Approved - Verified Customer VICTOR R.
1 week ago , TX

Brandon was very helpful over the phone and made my process very smooth.


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