"Great Quality Great Delivery Time Great Costumer Service Great all Around Thumbs Up "

"The cooler was shipped and was exactly as shown,, and pricing was right on"

"From knowledgeable staff to outstanding packaging the item was received quickly and undamaged. Thank you Mr. Cool."

"Great service. Received heat exchanger in 5 working days. Price was slightly less than other sources."

"I just saved over $250 on a single part that was already on-stock. I will let my boat service center know about Mr. Cool, because no one want to wait weeks when they have an option. "

"The heat exchanger for my Merc 454 engine arrived ahead of schedule and fit perfectly in place of the original unit. Price was reasonable. Salesperson who facilitated the order was knowledgeable and helpful."

"Was helped by Russ regarding the purchase of a spare heat exchanger for an 24 year old diesel engine on my sail boat. Excellent advice regarding finding the right spare part, super fast delivery!
Suzanne"

"We received an oil cooler. Within the 3days requested. Have not installed part, but it looks good."

"When i had questions, it was easy to contact them. Even though i had to leave a message they called me back within the hour. "

"I CALLED DR. COOL ON SATURDAY BEFORE LABOR DAY AND WHILE HE WAS SHOPPING HE CALLED ME BACK TO CONFIRMED MY COOLERS AND SENT THEM TUESDAY JUST LIKE HE SAID. AT A FAIR PRICE , A LOT LESS THAN ANY ONE ELSE."

"Thanks ONAN Parts and speedy delivery.
Work was completed."

"Russ was very helpful. Delivery service was excellent. Unfortunately, the part had to be returned and there was a slight time delay in getting the refund. Otherwise, no real complaints."

"As always. Friendly. Quick and easy. Thank you! "

"Unlike previous Mr. Cool purchases, this cooler came with no label on it and a mottled paint job. The oil side had apparently been tested with water and still had substantial amount of water in it which had to be blown out prior to hooking up to oil. The OEM cooler had 3/8" inlet/outlet oil fittings. This one has 1/2", so we had to install bushings. "

"I bought a heat exchanger. It turns out it was the wrong one. Brandon at Mr. Cool simply overnighted the new one along with a label to ship the wrong one back. No hassle...bing bang boom. While being shipped the wrong one was not the greatest thing, they recovered admirably!!!"